/* flac - Command-line FLAC encoder/decoder * Copyright (C) 2000-2009 Josh Coalson * Copyright (C) 2011-2016 Xiph.Org Foundation * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifdef HAVE_CONFIG_H # include #endif #include #include /* for LONG_MAX */ #include /* for floor() */ #include /* for FILE etc. */ #include /* for malloc */ #include /* for strcmp(), strerror() */ #include #include "FLAC/all.h" #include "share/alloc.h" #include "share/grabbag.h" #include "share/compat.h" #include "share/private.h" #include "share/safe_str.h" #include "encode.h" #ifdef min #undef min #endif #define min(x,y) ((x)<(y)?(x):(y)) #ifdef max #undef max #endif #define max(x,y) ((x)>(y)?(x):(y)) /* this MUST be >= 588 so that sector aligning can take place with one read */ /* this MUST be < 2^sizeof(size_t) / ( FLAC__MAX_CHANNELS * (FLAC__MAX_BITS_PER_SAMPLE/8) ) */ #define CHUNK_OF_SAMPLES 2048 typedef struct { uint32_t sample_rate; uint32_t channels; uint32_t bits_per_sample; /* width of sample point, including 'shift' bits, valid bps is bits_per_sample-shift */ uint32_t shift; /* # of LSBs samples have been shifted left by */ uint32_t bytes_per_wide_sample; /* for convenience, always == channels*((bps+7)/8), or 0 if N/A to input format (like FLAC) */ FLAC__bool is_unsigned_samples; FLAC__bool is_big_endian; FLAC__uint32 channel_mask; } SampleInfo; /* this is the client_data attached to the FLAC decoder when encoding from a FLAC file */ typedef struct { FLAC__off_t filesize; const FLAC__byte *lookahead; uint32_t lookahead_length; size_t num_metadata_blocks; FLAC__StreamMetadata *metadata_blocks[1024]; /*@@@ BAD MAGIC number */ FLAC__uint64 samples_left_to_process; FLAC__bool fatal_error; } FLACDecoderData; typedef struct { #if FLAC__HAS_OGG FLAC__bool use_ogg; #endif FLAC__bool verify; FLAC__bool is_stdout; FLAC__bool outputfile_opened; /* true if we successfully opened the output file and we want it to be deleted if there is an error */ const char *inbasefilename; const char *infilename; const char *outfilename; FLAC__bool treat_warnings_as_errors; FLAC__bool continue_through_decode_errors; FLAC__bool replay_gain; FLAC__uint64 total_samples_to_encode; /* (i.e. "wide samples" aka "sample frames") WATCHOUT: may be 0 to mean 'unknown' */ FLAC__uint64 unencoded_size; /* an estimate of the input size, only used in the progress indicator */ FLAC__uint64 bytes_written; FLAC__uint64 samples_written; uint32_t stats_frames_interval; uint32_t old_frames_written; SampleInfo info; FileFormat format; union { struct { FLAC__uint64 data_bytes; } iff; struct { FLAC__StreamDecoder *decoder; FLACDecoderData client_data; } flac; } fmt; FLAC__StreamEncoder *encoder; FILE *fin; FLAC__StreamMetadata *seek_table_template; double progress, compression_ratio; } EncoderSession; const int FLAC_ENCODE__DEFAULT_PADDING = 8192; static FLAC__bool is_big_endian_host_; #define UBUFFER_INT8_SIZE 0x10000 static union { FLAC__int8 s8[UBUFFER_INT8_SIZE]; FLAC__uint8 u8[UBUFFER_INT8_SIZE]; FLAC__int16 s16[UBUFFER_INT8_SIZE/2]; FLAC__uint16 u16[UBUFFER_INT8_SIZE/2]; } ubuffer; static FLAC__int32 in_[FLAC__MAX_CHANNELS][CHUNK_OF_SAMPLES]; static FLAC__int32 *input_[FLAC__MAX_CHANNELS]; /* * local routines */ static FLAC__bool EncoderSession_construct(EncoderSession *e, encode_options_t options, FLAC__off_t infilesize, FILE *infile, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, uint32_t lookahead_length); static void EncoderSession_destroy(EncoderSession *e); static int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero, foreign_metadata_t *foreign_metadata, FLAC__bool error_on_compression_fail); static int EncoderSession_finish_error(EncoderSession *e); static FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options); static FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], uint32_t samples); static FLAC__bool EncoderSession_format_is_iff(const EncoderSession *e); static FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e); static FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, uint32_t sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input); static FLAC__bool verify_metadata(const EncoderSession *e, FLAC__StreamMetadata **metadata, uint32_t num_metadata); static FLAC__bool format_input(FLAC__int32 *dest[], uint32_t wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, uint32_t channels, uint32_t bps, uint32_t shift, size_t *channel_map); static void encoder_progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, uint32_t frames_written, uint32_t total_frames_estimate, void *client_data); static FLAC__StreamDecoderReadStatus flac_decoder_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data); static FLAC__StreamDecoderSeekStatus flac_decoder_seek_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data); static FLAC__StreamDecoderTellStatus flac_decoder_tell_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data); static FLAC__StreamDecoderLengthStatus flac_decoder_length_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data); static FLAC__bool flac_decoder_eof_callback(const FLAC__StreamDecoder *decoder, void *client_data); static FLAC__StreamDecoderWriteStatus flac_decoder_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); static void flac_decoder_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); static void flac_decoder_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); static FLAC__bool parse_cuesheet(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, uint32_t sample_rate, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset, FLAC__bool treat_warnings_as_errors); static void print_stats(const EncoderSession *encoder_session); static void print_error_with_init_status(const EncoderSession *e, const char *message, FLAC__StreamEncoderInitStatus init_status); static void print_error_with_state(const EncoderSession *e, const char *message); static void print_verify_error(EncoderSession *e); static FLAC__bool read_bytes(FILE *f, FLAC__byte *buf, size_t n, FLAC__bool eof_ok, const char *fn); static FLAC__bool read_uint16(FILE *f, FLAC__bool big_endian, FLAC__uint16 *val, const char *fn); static FLAC__bool read_uint32(FILE *f, FLAC__bool big_endian, FLAC__uint32 *val, const char *fn); static FLAC__bool read_uint64(FILE *f, FLAC__bool big_endian, FLAC__uint64 *val, const char *fn); static FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, const char *fn); static FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset); static uint32_t count_channel_mask_bits(FLAC__uint32 mask); #if 0 static FLAC__uint32 limit_channel_mask(FLAC__uint32 mask, uint32_t channels); #endif static FLAC__bool get_sample_info_raw(EncoderSession *e, encode_options_t options) { e->info.sample_rate = options.format_options.raw.sample_rate; e->info.channels = options.format_options.raw.channels; e->info.bits_per_sample = options.format_options.raw.bps; e->info.shift = 0; e->info.bytes_per_wide_sample = options.format_options.raw.channels * ((options.format_options.raw.bps+7)/8); e->info.is_unsigned_samples = options.format_options.raw.is_unsigned_samples; e->info.is_big_endian = options.format_options.raw.is_big_endian; e->info.channel_mask = 0; return true; } static FLAC__bool get_sample_info_wave(EncoderSession *e, encode_options_t options) { FLAC__bool got_fmt_chunk = false, got_data_chunk = false, got_ds64_chunk = false; uint32_t sample_rate = 0, channels = 0, bps = 0, shift = 0; FLAC__uint32 channel_mask = 0; FLAC__uint64 ds64_data_size = 0; e->info.is_unsigned_samples = false; e->info.is_big_endian = false; if(e->format == FORMAT_WAVE64) { /* * lookahead[] already has "riff\x2E\x91\xCF\x11\xA5\xD6\x28\xDB", skip over remaining header */ if(!fskip_ahead(e->fin, 16+8+16-12)) { /* riff GUID + riff size + WAVE GUID - lookahead */ flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over remaining \"riff\" header\n", e->inbasefilename); return false; } } /* else lookahead[] already has "RIFFxxxxWAVE" or "RF64xxxxWAVE" */ while(!feof(e->fin) && !got_data_chunk) { /* chunk IDs are 4 bytes for WAVE/RF64, 16 for Wave64 */ /* for WAVE/RF64 we want the 5th char zeroed so we can treat it like a C string */ char chunk_id[16] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' }; if(!read_bytes(e->fin, (FLAC__byte*)chunk_id, e->format==FORMAT_WAVE64?16:4, /*eof_ok=*/true, e->inbasefilename)) { flac__utils_printf(stderr, 1, "%s: ERROR: incomplete chunk identifier\n", e->inbasefilename); return false; } if(feof(e->fin)) break; if(e->format == FORMAT_RF64 && !memcmp(chunk_id, "ds64", 4)) { /* RF64 64-bit sizes chunk */ FLAC__uint32 xx, data_bytes; if(got_ds64_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: file has multiple 'ds64' chunks\n", e->inbasefilename); return false; } if(got_fmt_chunk || got_data_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: 'ds64' chunk appears after 'fmt ' or 'data' chunk\n", e->inbasefilename); return false; } /* ds64 chunk size */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; data_bytes = xx; if(data_bytes < 28) { flac__utils_printf(stderr, 1, "%s: ERROR: non-standard 'ds64' chunk has length = %u\n", e->inbasefilename, (uint32_t)data_bytes); return false; } if(data_bytes & 1) /* should never happen, but enforce WAVE alignment rules */ data_bytes++; /* RIFF 64-bit size, lo/hi */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; /* 'data' 64-bit size */ if(!read_uint64(e->fin, /*big_endian=*/false, &ds64_data_size, e->inbasefilename)) return false; data_bytes -= 16; /* skip any extra data in the ds64 chunk */ if(!fskip_ahead(e->fin, data_bytes)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over extra 'ds64' data\n", e->inbasefilename); return false; } got_ds64_chunk = true; } else if( !memcmp(chunk_id, "fmt ", 4) && (e->format!=FORMAT_WAVE64 || !memcmp(chunk_id, "fmt \xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A", 16)) ) { /* format chunk */ FLAC__uint16 x; FLAC__uint32 xx, data_bytes; FLAC__uint16 wFormatTag; /* wFormatTag word from the 'fmt ' chunk */ if(got_fmt_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: file has multiple 'fmt ' chunks\n", e->inbasefilename); return false; } /* see * http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html * http://windowssdk.msdn.microsoft.com/en-us/library/ms713497.aspx * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/audio_r/hh/Audio_r/aud-prop_d40f094e-44f9-4baa-8a15-03e4fb369501.xml.asp * * WAVEFORMAT is * 4 byte: chunk size * 2 byte: format type: 1 for WAVE_FORMAT_PCM, 65534 for WAVE_FORMAT_EXTENSIBLE * 2 byte: # channels * 4 byte: sample rate (Hz) * 4 byte: avg bytes per sec * 2 byte: block align * 2 byte: bits per sample (not necessarily all significant) * WAVEFORMATEX adds * 2 byte: extension size in bytes (usually 0 for WAVEFORMATEX and 22 for WAVEFORMATEXTENSIBLE with PCM) * WAVEFORMATEXTENSIBLE adds * 2 byte: valid bits per sample * 4 byte: channel mask * 16 byte: subformat GUID, first 2 bytes have format type, 1 being PCM * * Current spec says WAVEFORMATEX with PCM must have bps == 8 or 16, or any multiple of 8 for WAVEFORMATEXTENSIBLE. * Lots of old broken WAVEs/apps have don't follow it, e.g. 20 bps but a block align of 3/6 for mono/stereo. * * Block align for WAVE_FORMAT_PCM or WAVE_FORMAT_EXTENSIBLE is also supposed to be channels*bps/8 * * If the channel mask has more set bits than # of channels, the extra MSBs are ignored. * If the channel mask has less set bits than # of channels, the extra channels are unassigned to any speaker. * * Data is supposed to be uint32_t for bps <= 8 else signed. */ /* fmt chunk size */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; data_bytes = xx; if(e->format == FORMAT_WAVE64) { /* other half of the size field should be 0 */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; if(xx) { flac__utils_printf(stderr, 1, "%s: ERROR: freakishly large Wave64 'fmt ' chunk has length = 0x%08X%08X\n", e->inbasefilename, (uint32_t)xx, (uint32_t)data_bytes); return false; } /* subtract size of header */ if (data_bytes < 16+8) { flac__utils_printf(stderr, 1, "%s: ERROR: freakishly small Wave64 'fmt ' chunk has length = 0x%08X%08X\n", e->inbasefilename, (uint32_t)xx, (uint32_t)data_bytes); return false; } data_bytes -= (16+8); } if(data_bytes < 16) { flac__utils_printf(stderr, 1, "%s: ERROR: non-standard 'fmt ' chunk has length = %u\n", e->inbasefilename, (uint32_t)data_bytes); return false; } if(e->format != FORMAT_WAVE64) { if(data_bytes & 1) /* should never happen, but enforce WAVE alignment rules */ data_bytes++; } else { /* Wave64 */ data_bytes = (data_bytes+7) & (~7u); /* should never happen, but enforce Wave64 alignment rules */ } /* format code */ if(!read_uint16(e->fin, /*big_endian=*/false, &wFormatTag, e->inbasefilename)) return false; if(wFormatTag != 1 /*WAVE_FORMAT_PCM*/ && wFormatTag != 65534 /*WAVE_FORMAT_EXTENSIBLE*/) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported format type %u\n", e->inbasefilename, (uint32_t)wFormatTag); return false; } /* number of channels */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; channels = (uint32_t)x; /* sample rate */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; sample_rate = xx; /* avg bytes per second (ignored) */ if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; /* block align */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; /* bits per sample */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; bps = (uint32_t)x; e->info.is_unsigned_samples = (bps <= 8); if(wFormatTag == 1) { if(bps != 8 && bps != 16) { if(bps == 24 || bps == 32) { /* let these slide with a warning since they're unambiguous */ flac__utils_printf(stderr, 1, "%s: WARNING: legacy WAVE file has format type %u but bits-per-sample=%u\n", e->inbasefilename, (uint32_t)wFormatTag, bps); if(e->treat_warnings_as_errors) return false; } else { /* @@@ we could add an option to specify left- or right-justified blocks so we knew how to set 'shift' */ flac__utils_printf(stderr, 1, "%s: ERROR: legacy WAVE file has format type %u but bits-per-sample=%u\n", e->inbasefilename, (uint32_t)wFormatTag, bps); return false; } } #if 0 /* @@@ reinstate once we can get an answer about whether the samples are left- or right-justified */ if((bps+7)/8 * channels == block_align) { if(bps % 8) { /* assume legacy file is byte aligned with some LSBs zero; this is double-checked in format_input() */ flac__utils_printf(stderr, 1, "%s: WARNING: legacy WAVE file (format type %d) has block alignment=%u, bits-per-sample=%u, channels=%u\n", e->inbasefilename, (uint32_t)wFormatTag, block_align, bps, channels); if(e->treat_warnings_as_errors) return false; shift = 8 - (bps % 8); bps += shift; } else shift = 0; } else { flac__utils_printf(stderr, 1, "%s: ERROR: illegal WAVE file (format type %d) has block alignment=%u, bits-per-sample=%u, channels=%u\n", e->inbasefilename, (uint32_t)wFormatTag, block_align, bps, channels); return false; } #else shift = 0; #endif if(channels > 2 && !options.channel_map_none) { flac__utils_printf(stderr, 1, "%s: ERROR: WAVE has >2 channels but is not WAVE_FORMAT_EXTENSIBLE; cannot assign channels\n", e->inbasefilename); return false; } FLAC__ASSERT(data_bytes >= 16); data_bytes -= 16; } else { if(data_bytes < 40) { flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with size %u\n", e->inbasefilename, (uint32_t)data_bytes); return false; } /* cbSize */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; if(x < 22) { flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with cbSize %u\n", e->inbasefilename, (uint32_t)x); return false; } /* valid bps */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; if((uint32_t)x > bps) { flac__utils_printf(stderr, 1, "%s: ERROR: invalid WAVEFORMATEXTENSIBLE chunk with wValidBitsPerSample (%u) > wBitsPerSample (%u)\n", e->inbasefilename, (uint32_t)x, bps); return false; } shift = bps - (uint32_t)x; /* channel mask */ if(!read_uint32(e->fin, /*big_endian=*/false, &channel_mask, e->inbasefilename)) return false; /* for mono/stereo and unassigned channels, we fake the mask */ if(channel_mask == 0) { if(channels == 1) channel_mask = 0x0004; else if(channels == 2) channel_mask = 0x0003; } /* set channel mapping */ /* FLAC order follows SMPTE and WAVEFORMATEXTENSIBLE but with fewer channels, which are: */ /* front left, front right, front center, LFE, back left, back right, back center, side left, side right */ /* the default mapping is sufficient for 1-8 channels */ #if 0 /* @@@ example for dolby/vorbis order, for reference later in case it becomes important */ if( options.channel_map_none || channel_mask == 0x0001 || /* 1 channel: (mono) */ channel_mask == 0x0003 || /* 2 channels: front left, front right */ channel_mask == 0x0033 || /* 4 channels: front left, front right, back left, back right */ channel_mask == 0x0603 /* 4 channels: front left, front right, side left, side right */ ) { /* keep default channel order */ } else if( channel_mask == 0x0007 || /* 3 channels: front left, front right, front center */ channel_mask == 0x0037 || /* 5 channels: front left, front right, front center, back left, back right */ channel_mask == 0x0607 /* 5 channels: front left, front right, front center, side left, side right */ ) { /* to dolby order: front left, center, front right [, surround left, surround right ] */ channel_map[1] = 2; channel_map[2] = 1; } else if( channel_mask == 0x003f || /* 6 channels: front left, front right, front center, LFE, back left, back right */ channel_mask == 0x060f || /* 6 channels: front left, front right, front center, LFE, side left, side right */ channel_mask == 0x070f || /* 7 channels: front left, front right, front center, LFE, back center, side left, side right */ channel_mask == 0x063f /* 8 channels: front left, front right, front center, LFE, back left, back right, side left, side right */ ) { /* to dolby order: front left, center, front right, surround left, surround right, LFE */ channel_map[1] = 2; channel_map[2] = 1; channel_map[3] = 5; channel_map[4] = 3; channel_map[5] = 4; } #else if( options.channel_map_none || channel_mask == 0x0001 || /* 1 channel: front left */ channel_mask == 0x0002 || /* 1 channel: front right */ channel_mask == 0x0004 || /* 1 channel: mono or front center */ channel_mask == 0x0003 || /* 2 channels: front left, front right */ channel_mask == 0x0007 || /* 3 channels: front left, front right, front center */ channel_mask == 0x0033 || /* 4 channels: front left, front right, back left, back right */ channel_mask == 0x0603 || /* 4 channels: front left, front right, side left, side right */ channel_mask == 0x0037 || /* 5 channels: front left, front right, front center, back left, back right */ channel_mask == 0x0607 || /* 5 channels: front left, front right, front center, side left, side right */ channel_mask == 0x003f || /* 6 channels: front left, front right, front center, LFE, back left, back right */ channel_mask == 0x060f || /* 6 channels: front left, front right, front center, LFE, side left, side right */ channel_mask == 0x070f || /* 7 channels: front left, front right, front center, LFE, back center, side left, side right */ channel_mask == 0x063f /* 8 channels: front left, front right, front center, LFE, back left, back right, side left, side right */ ) { /* keep default channel order */ } #endif else { flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk with unsupported channel mask=0x%04X\n\nUse --channel-map=none option to encode the input\n", e->inbasefilename, (uint32_t)channel_mask); return false; } if(!options.channel_map_none) { if(count_channel_mask_bits(channel_mask) < channels) { flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk: channel mask 0x%04X has unassigned channels (#channels=%u)\n", e->inbasefilename, (uint32_t)channel_mask, channels); return false; } #if 0 /* supporting this is too difficult with channel mapping; e.g. what if mask is 0x003f but #channels=4? * there would be holes in the order that would have to be filled in, or the mask would have to be * limited and the logic above rerun to see if it still fits into the FLAC mapping. */ else if(count_channel_mask_bits(channel_mask) > channels) channel_mask = limit_channel_mask(channel_mask, channels); #else else if(count_channel_mask_bits(channel_mask) > channels) { flac__utils_printf(stderr, 1, "%s: ERROR: WAVEFORMATEXTENSIBLE chunk: channel mask 0x%04X has extra bits for non-existant channels (#channels=%u)\n", e->inbasefilename, (uint32_t)channel_mask, channels); return false; } #endif } /* first part of GUID */ if(!read_uint16(e->fin, /*big_endian=*/false, &x, e->inbasefilename)) return false; if(x != 1) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported WAVEFORMATEXTENSIBLE chunk with non-PCM format %u\n", e->inbasefilename, (uint32_t)x); return false; } data_bytes -= 26; } e->info.bytes_per_wide_sample = channels * (bps / 8); /* skip any extra data in the fmt chunk */ if(!fskip_ahead(e->fin, data_bytes)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over extra 'fmt' data\n", e->inbasefilename); return false; } got_fmt_chunk = true; } else if( !memcmp(chunk_id, "data", 4) && (e->format!=FORMAT_WAVE64 || !memcmp(chunk_id, "data\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A", 16)) ) { /* data chunk */ FLAC__uint32 xx; FLAC__uint64 data_bytes; if(!got_fmt_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: got 'data' chunk before 'fmt' chunk\n", e->inbasefilename); return false; } /* data size */ if(e->format != FORMAT_WAVE64) { if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; data_bytes = xx; } else { /* Wave64 */ if(!read_uint64(e->fin, /*big_endian=*/false, &data_bytes, e->inbasefilename)) return false; /* subtract size of header */ if (data_bytes < 16+8) { flac__utils_printf(stderr, 1, "%s: ERROR: freakishly small Wave64 'data' chunk has length = 0x00000000%08X\n", e->inbasefilename, (uint32_t)data_bytes); return false; } data_bytes -= (16+8); } if(e->format == FORMAT_RF64) { if(!got_ds64_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: RF64 file has no 'ds64' chunk before 'data' chunk\n", e->inbasefilename); return false; } if(data_bytes == 0xffffffff) data_bytes = ds64_data_size; } if(options.ignore_chunk_sizes) { FLAC__ASSERT(!options.sector_align); if(data_bytes) { flac__utils_printf(stderr, 1, "%s: WARNING: 'data' chunk has non-zero size, using --ignore-chunk-sizes is probably a bad idea\n", e->inbasefilename, chunk_id); if(e->treat_warnings_as_errors) return false; } data_bytes = (FLAC__uint64)0 - (FLAC__uint64)e->info.bytes_per_wide_sample; /* max out data_bytes; we'll use EOF as signal to stop reading */ } else if(0 == data_bytes) { flac__utils_printf(stderr, 1, "%s: ERROR: 'data' chunk has size of 0\n", e->inbasefilename); return false; } e->fmt.iff.data_bytes = data_bytes; got_data_chunk = true; break; } else { FLAC__uint32 xx; FLAC__uint64 skip; if(!options.format_options.iff.foreign_metadata) { if(e->format != FORMAT_WAVE64) flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk '%s' (use --keep-foreign-metadata to keep)\n", e->inbasefilename, chunk_id); else flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk %02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X (use --keep-foreign-metadata to keep)\n", e->inbasefilename, (uint32_t)((const uint8_t *)chunk_id)[3], (uint32_t)((const uint8_t *)chunk_id)[2], (uint32_t)((const uint8_t *)chunk_id)[1], (uint32_t)((const uint8_t *)chunk_id)[0], (uint32_t)((const uint8_t *)chunk_id)[5], (uint32_t)((const uint8_t *)chunk_id)[4], (uint32_t)((const uint8_t *)chunk_id)[7], (uint32_t)((const uint8_t *)chunk_id)[6], (uint32_t)((const uint8_t *)chunk_id)[9], (uint32_t)((const uint8_t *)chunk_id)[8], (uint32_t)((const uint8_t *)chunk_id)[10], (uint32_t)((const uint8_t *)chunk_id)[11], (uint32_t)((const uint8_t *)chunk_id)[12], (uint32_t)((const uint8_t *)chunk_id)[13], (uint32_t)((const uint8_t *)chunk_id)[14], (uint32_t)((const uint8_t *)chunk_id)[15] ); if(e->treat_warnings_as_errors) return false; } /* chunk size */ if(e->format != FORMAT_WAVE64) { if(!read_uint32(e->fin, /*big_endian=*/false, &xx, e->inbasefilename)) return false; skip = xx; skip += skip & 1; } else { /* Wave64 */ if(!read_uint64(e->fin, /*big_endian=*/false, &skip, e->inbasefilename)) return false; skip = (skip+7) & (~(FLAC__uint64)7); /* subtract size of header */ if (skip < 16+8) { flac__utils_printf(stderr, 1, "%s: ERROR: freakishly small Wave64 chunk has length = 0x00000000%08X\n", e->inbasefilename, (uint32_t)skip); return false; } skip -= (16+8); } if(skip) { if(!fskip_ahead(e->fin, skip)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over chunk\n", e->inbasefilename); return false; } } } } if(!got_fmt_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: didn't find fmt chunk\n", e->inbasefilename); return false; } if(!got_data_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: didn't find data chunk\n", e->inbasefilename); return false; } e->info.sample_rate = sample_rate; e->info.channels = channels; e->info.bits_per_sample = bps; e->info.shift = shift; e->info.channel_mask = channel_mask; return true; } static FLAC__bool get_sample_info_aiff(EncoderSession *e, encode_options_t options) { FLAC__bool got_comm_chunk = false, got_ssnd_chunk = false; uint32_t sample_rate = 0, channels = 0, bps = 0, shift = 0; FLAC__uint64 sample_frames = 0; FLAC__uint32 channel_mask = 0; e->info.is_unsigned_samples = false; e->info.is_big_endian = true; /* * lookahead[] already has "FORMxxxxAIFF", do chunks */ while(!feof(e->fin) && !got_ssnd_chunk) { char chunk_id[5] = { '\0', '\0', '\0', '\0', '\0' }; /* one extra byte for terminating NUL so we can also treat it like a C string */ if(!read_bytes(e->fin, (FLAC__byte*)chunk_id, 4, /*eof_ok=*/true, e->inbasefilename)) { flac__utils_printf(stderr, 1, "%s: ERROR: incomplete chunk identifier\n", e->inbasefilename); return false; } if(feof(e->fin)) break; if(!memcmp(chunk_id, "COMM", 4)) { /* common chunk */ FLAC__uint16 x; FLAC__uint32 xx; uint64_t skip; const FLAC__bool is_aifc = e->format == FORMAT_AIFF_C; const FLAC__uint32 minimum_comm_size = (is_aifc? 22 : 18); if(got_comm_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: file has multiple 'COMM' chunks\n", e->inbasefilename); return false; } /* COMM chunk size */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; else if(xx < minimum_comm_size) { flac__utils_printf(stderr, 1, "%s: ERROR: non-standard %s 'COMM' chunk has length = %u\n", e->inbasefilename, is_aifc? "AIFF-C" : "AIFF", (uint32_t)xx); return false; } else if(!is_aifc && xx != minimum_comm_size) { flac__utils_printf(stderr, 1, "%s: WARNING: non-standard %s 'COMM' chunk has length = %u, expected %u\n", e->inbasefilename, is_aifc? "AIFF-C" : "AIFF", (uint32_t)xx, minimum_comm_size); if(e->treat_warnings_as_errors) return false; } skip = (xx-minimum_comm_size)+(xx & 1); /* number of channels */ if(!read_uint16(e->fin, /*big_endian=*/true, &x, e->inbasefilename)) return false; channels = (uint32_t)x; if(channels > 2 && !options.channel_map_none) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number of channels %u for AIFF\n", e->inbasefilename, channels); return false; } /* number of sample frames */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; sample_frames = xx; /* bits per sample */ if(!read_uint16(e->fin, /*big_endian=*/true, &x, e->inbasefilename)) return false; bps = (uint32_t)x; shift = (bps%8)? 8-(bps%8) : 0; /* SSND data is always byte-aligned, left-justified but format_input() will double-check */ bps += shift; /* sample rate */ if(!read_sane_extended(e->fin, &xx, e->inbasefilename)) return false; sample_rate = xx; /* check compression type for AIFF-C */ if(is_aifc) { if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; if(xx == 0x736F7774) /* "sowt" */ e->info.is_big_endian = false; else if(xx == 0x4E4F4E45) /* "NONE" */ ; /* nothing to do, we already default to big-endian */ else { flac__utils_printf(stderr, 1, "%s: ERROR: can't handle AIFF-C compression type \"%c%c%c%c\"\n", e->inbasefilename, (char)(xx>>24), (char)((xx>>16)&8), (char)((xx>>8)&8), (char)(xx&8)); return false; } } /* set channel mapping */ /* FLAC order follows SMPTE and WAVEFORMATEXTENSIBLE but with fewer channels, which are: */ /* front left, front right, center, LFE, back left, back right, surround left, surround right */ /* specs say the channel ordering is: * 1 2 3 4 5 6 * ___________________________________________________ * 2 stereo l r * 3 l r c * 4 l c r S * quad (ambiguous with 4ch) Fl Fr Bl Br * 5 Fl Fr Fc Sl Sr * 6 l lc c r rc S * l:left r:right c:center Fl:front-left Fr:front-right Bl:back-left Br:back-right Lc:left-center Rc:right-center S:surround * so we only have unambiguous mappings for 2, 3, and 5 channels */ if( options.channel_map_none || channels == 1 || /* 1 channel: (mono) */ channels == 2 || /* 2 channels: left, right */ channels == 3 || /* 3 channels: left, right, center */ channels == 5 /* 5 channels: front left, front right, center, surround left, surround right */ ) { /* keep default channel order */ } else { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number of channels %u for AIFF\n", e->inbasefilename, channels); return false; } e->info.bytes_per_wide_sample = channels * (bps / 8); /* skip any extra data in the COMM chunk */ if(!fskip_ahead(e->fin, skip)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over extra COMM data\n", e->inbasefilename); return false; } got_comm_chunk = true; } else if(!memcmp(chunk_id, "SSND", 4) && !got_ssnd_chunk) { /* sound data chunk */ FLAC__uint32 xx; FLAC__uint64 data_bytes; uint32_t offset = 0; if(!got_comm_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: got 'SSND' chunk before 'COMM' chunk\n", e->inbasefilename); return false; } /* SSND chunk size */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; data_bytes = xx; if(options.ignore_chunk_sizes) { FLAC__ASSERT(!options.sector_align); if(data_bytes) { flac__utils_printf(stderr, 1, "%s: WARNING: 'SSND' chunk has non-zero size, using --ignore-chunk-sizes is probably a bad idea\n", e->inbasefilename, chunk_id); if(e->treat_warnings_as_errors) return false; } data_bytes = (FLAC__uint64)0 - (FLAC__uint64)e->info.bytes_per_wide_sample; /* max out data_bytes; we'll use EOF as signal to stop reading */ } else if(data_bytes <= 8) { flac__utils_printf(stderr, 1, "%s: ERROR: 'SSND' chunk has size <= 8\n", e->inbasefilename); return false; } else { data_bytes -= 8; /* discount the offset and block size fields */ } /* offset */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; offset = xx; data_bytes -= offset; /* block size */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; if(xx && !options.ignore_chunk_sizes) data_bytes -= (xx - (data_bytes % xx)); if(options.ignore_chunk_sizes) { if(xx) { flac__utils_printf(stderr, 1, "%s: WARNING: 'SSND' chunk has non-zero blocksize, using --ignore-chunk-sizes is probably a bad idea\n", e->inbasefilename, chunk_id); if(e->treat_warnings_as_errors) return false; } } /* skip any SSND offset bytes */ if(!fskip_ahead(e->fin, offset)) { flac__utils_printf(stderr, 1, "%s: ERROR: skipping offset in SSND chunk\n", e->inbasefilename); return false; } e->fmt.iff.data_bytes = data_bytes; got_ssnd_chunk = true; } else { FLAC__uint32 xx; if(!options.format_options.iff.foreign_metadata) { flac__utils_printf(stderr, 1, "%s: WARNING: skipping unknown chunk '%s' (use --keep-foreign-metadata to keep)\n", e->inbasefilename, chunk_id); if(e->treat_warnings_as_errors) return false; } /* chunk size */ if(!read_uint32(e->fin, /*big_endian=*/true, &xx, e->inbasefilename)) return false; else { uint64_t skip = xx + (xx & 1); FLAC__ASSERT(skip <= LONG_MAX); if(!fskip_ahead(e->fin, skip)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping over chunk\n", e->inbasefilename); return false; } } } } if(!got_comm_chunk) { flac__utils_printf(stderr, 1, "%s: ERROR: didn't find COMM chunk\n", e->inbasefilename); return false; } if(!got_ssnd_chunk && sample_frames) { flac__utils_printf(stderr, 1, "%s: ERROR: didn't find SSND chunk\n", e->inbasefilename); return false; } e->info.sample_rate = sample_rate; e->info.channels = channels; e->info.bits_per_sample = bps; e->info.shift = shift; e->info.channel_mask = channel_mask; return true; } static FLAC__bool get_sample_info_flac(EncoderSession *e) { if (!( FLAC__stream_decoder_set_md5_checking(e->fmt.flac.decoder, false) && FLAC__stream_decoder_set_metadata_respond_all(e->fmt.flac.decoder) )) { flac__utils_printf(stderr, 1, "%s: ERROR: setting up decoder for FLAC input\n", e->inbasefilename); return false; } if (e->format == FORMAT_OGGFLAC) { if (FLAC__stream_decoder_init_ogg_stream(e->fmt.flac.decoder, flac_decoder_read_callback, flac_decoder_seek_callback, flac_decoder_tell_callback, flac_decoder_length_callback, flac_decoder_eof_callback, flac_decoder_write_callback, flac_decoder_metadata_callback, flac_decoder_error_callback, /*client_data=*/e) != FLAC__STREAM_DECODER_INIT_STATUS_OK) { flac__utils_printf(stderr, 1, "%s: ERROR: initializing decoder for Ogg FLAC input, state = %s\n", e->inbasefilename, FLAC__stream_decoder_get_resolved_state_string(e->fmt.flac.decoder)); return false; } } else if (FLAC__stream_decoder_init_stream(e->fmt.flac.decoder, flac_decoder_read_callback, flac_decoder_seek_callback, flac_decoder_tell_callback, flac_decoder_length_callback, flac_decoder_eof_callback, flac_decoder_write_callback, flac_decoder_metadata_callback, flac_decoder_error_callback, /*client_data=*/e) != FLAC__STREAM_DECODER_INIT_STATUS_OK) { flac__utils_printf(stderr, 1, "%s: ERROR: initializing decoder for FLAC input, state = %s\n", e->inbasefilename, FLAC__stream_decoder_get_resolved_state_string(e->fmt.flac.decoder)); return false; } if (!FLAC__stream_decoder_process_until_end_of_metadata(e->fmt.flac.decoder) || e->fmt.flac.client_data.fatal_error) { if (e->fmt.flac.client_data.fatal_error) flac__utils_printf(stderr, 1, "%s: ERROR: out of memory or too many metadata blocks while reading metadata in FLAC input\n", e->inbasefilename); else flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, state = %s\n", e->inbasefilename, FLAC__stream_decoder_get_resolved_state_string(e->fmt.flac.decoder)); return false; } if (e->fmt.flac.client_data.num_metadata_blocks == 0) { flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, got no metadata blocks\n", e->inbasefilename); return false; } else if (e->fmt.flac.client_data.metadata_blocks[0]->type != FLAC__METADATA_TYPE_STREAMINFO) { flac__utils_printf(stderr, 1, "%s: ERROR: reading metadata in FLAC input, first metadata block is not STREAMINFO\n", e->inbasefilename); return false; } else if (e->fmt.flac.client_data.metadata_blocks[0]->data.stream_info.total_samples == 0) { flac__utils_printf(stderr, 1, "%s: ERROR: FLAC input has STREAMINFO with unknown total samples which is not supported\n", e->inbasefilename); return false; } e->info.sample_rate = e->fmt.flac.client_data.metadata_blocks[0]->data.stream_info.sample_rate; e->info.channels = e->fmt.flac.client_data.metadata_blocks[0]->data.stream_info.channels; e->info.bits_per_sample = e->fmt.flac.client_data.metadata_blocks[0]->data.stream_info.bits_per_sample; e->info.shift = 0; e->info.bytes_per_wide_sample = 0; e->info.is_unsigned_samples = false; /* not applicable for FLAC input */ e->info.is_big_endian = false; /* not applicable for FLAC input */ e->info.channel_mask = 0; return true; } /* * public routines */ int flac__encode_file(FILE *infile, FLAC__off_t infilesize, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, uint32_t lookahead_length, encode_options_t options) { EncoderSession encoder_session; size_t channel_map[FLAC__MAX_CHANNELS]; int info_align_carry = -1, info_align_zero = -1; if(!EncoderSession_construct(&encoder_session, options, infilesize, infile, infilename, outfilename, lookahead, lookahead_length)) return 1; /* initialize default channel map that preserves channel order */ { size_t i; for(i = 0; i < sizeof(channel_map)/sizeof(channel_map[0]); i++) channel_map[i] = i; } /* read foreign metadata if requested */ if(EncoderSession_format_is_iff(&encoder_session) && options.format_options.iff.foreign_metadata) { const char *error; if(!( options.format == FORMAT_WAVE || options.format == FORMAT_RF64? flac__foreign_metadata_read_from_wave(options.format_options.iff.foreign_metadata, infilename, &error) : options.format == FORMAT_WAVE64? flac__foreign_metadata_read_from_wave64(options.format_options.iff.foreign_metadata, infilename, &error) : flac__foreign_metadata_read_from_aiff(options.format_options.iff.foreign_metadata, infilename, &error) )) { flac__utils_printf(stderr, 1, "%s: ERROR reading foreign metadata: %s\n", encoder_session.inbasefilename, error); return EncoderSession_finish_error(&encoder_session); } } /* initialize encoder session with info about the audio (channels/bps/resolution/endianness/etc) */ switch(options.format) { case FORMAT_RAW: if(!get_sample_info_raw(&encoder_session, options)) return EncoderSession_finish_error(&encoder_session); break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: if(!get_sample_info_wave(&encoder_session, options)) return EncoderSession_finish_error(&encoder_session); break; case FORMAT_AIFF: case FORMAT_AIFF_C: if(!get_sample_info_aiff(&encoder_session, options)) return EncoderSession_finish_error(&encoder_session); break; case FORMAT_FLAC: case FORMAT_OGGFLAC: /* * set up FLAC decoder for the input */ if (0 == (encoder_session.fmt.flac.decoder = FLAC__stream_decoder_new())) { flac__utils_printf(stderr, 1, "%s: ERROR: creating decoder for FLAC input\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } if(!get_sample_info_flac(&encoder_session)) return EncoderSession_finish_error(&encoder_session); break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } /* some more checks */ if(encoder_session.info.channels == 0 || encoder_session.info.channels > FLAC__MAX_CHANNELS) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported number of channels %u\n", encoder_session.inbasefilename, encoder_session.info.channels); return EncoderSession_finish_error(&encoder_session); } if(!FLAC__format_sample_rate_is_valid(encoder_session.info.sample_rate)) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported sample rate %u\n", encoder_session.inbasefilename, encoder_session.info.sample_rate); return EncoderSession_finish_error(&encoder_session); } if(encoder_session.info.bits_per_sample-encoder_session.info.shift < 4 || encoder_session.info.bits_per_sample-encoder_session.info.shift > 24) { flac__utils_printf(stderr, 1, "%s: ERROR: unsupported bits-per-sample %u\n", encoder_session.inbasefilename, encoder_session.info.bits_per_sample-encoder_session.info.shift); return EncoderSession_finish_error(&encoder_session); } if(options.sector_align) { if(encoder_session.info.channels != 2) { flac__utils_printf(stderr, 1, "%s: ERROR: file has %u channels, must be 2 for --sector-align\n", encoder_session.inbasefilename, encoder_session.info.channels); return EncoderSession_finish_error(&encoder_session); } if(encoder_session.info.sample_rate != 44100) { flac__utils_printf(stderr, 1, "%s: ERROR: file's sample rate is %u, must be 44100 for --sector-align\n", encoder_session.inbasefilename, encoder_session.info.sample_rate); return EncoderSession_finish_error(&encoder_session); } if(encoder_session.info.bits_per_sample-encoder_session.info.shift != 16) { flac__utils_printf(stderr, 1, "%s: ERROR: file has %u bits-per-sample, must be 16 for --sector-align\n", encoder_session.inbasefilename, encoder_session.info.bits_per_sample-encoder_session.info.shift); return EncoderSession_finish_error(&encoder_session); } } { FLAC__uint64 total_samples_in_input; /* WATCHOUT: may be 0 to mean "unknown" */ FLAC__uint64 skip; FLAC__uint64 until; /* a value of 0 mean end-of-stream (i.e. --until=-0) */ uint32_t consecutive_eos_count = 0; uint32_t align_remainder = 0; switch(options.format) { case FORMAT_RAW: if(infilesize < 0) total_samples_in_input = 0; else total_samples_in_input = (FLAC__uint64)infilesize / encoder_session.info.bytes_per_wide_sample + *options.align_reservoir_samples; break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: case FORMAT_AIFF: case FORMAT_AIFF_C: /* truncation in the division removes any padding byte that was counted in encoder_session.fmt.iff.data_bytes */ total_samples_in_input = encoder_session.fmt.iff.data_bytes / encoder_session.info.bytes_per_wide_sample + *options.align_reservoir_samples; break; case FORMAT_FLAC: case FORMAT_OGGFLAC: total_samples_in_input = encoder_session.fmt.flac.client_data.metadata_blocks[0]->data.stream_info.total_samples + *options.align_reservoir_samples; break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } /* * now that we know the sample rate, canonicalize the * --skip string to an absolute sample number: */ flac__utils_canonicalize_skip_until_specification(&options.skip_specification, encoder_session.info.sample_rate); FLAC__ASSERT(options.skip_specification.value.samples >= 0); skip = (FLAC__uint64)options.skip_specification.value.samples; FLAC__ASSERT(!options.sector_align || (options.format != FORMAT_FLAC && options.format != FORMAT_OGGFLAC && skip == 0)); /* *options.align_reservoir_samples will be 0 unless --sector-align is used */ FLAC__ASSERT(options.sector_align || *options.align_reservoir_samples == 0); /* * now that we possibly know the input size, canonicalize the * --until string to an absolute sample number: */ if(!canonicalize_until_specification(&options.until_specification, encoder_session.inbasefilename, encoder_session.info.sample_rate, skip, total_samples_in_input)) return EncoderSession_finish_error(&encoder_session); until = (FLAC__uint64)options.until_specification.value.samples; FLAC__ASSERT(!options.sector_align || until == 0); /* adjust encoding parameters based on skip and until values */ switch(options.format) { case FORMAT_RAW: infilesize -= (FLAC__off_t)skip * encoder_session.info.bytes_per_wide_sample; encoder_session.total_samples_to_encode = total_samples_in_input - skip; break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: case FORMAT_AIFF: case FORMAT_AIFF_C: encoder_session.fmt.iff.data_bytes -= skip * encoder_session.info.bytes_per_wide_sample; if(options.ignore_chunk_sizes) { encoder_session.total_samples_to_encode = 0; FLAC__ASSERT(0 == until); } else { encoder_session.total_samples_to_encode = total_samples_in_input - skip; } break; case FORMAT_FLAC: case FORMAT_OGGFLAC: encoder_session.total_samples_to_encode = total_samples_in_input - skip; break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } if(until > 0) { const FLAC__uint64 trim = total_samples_in_input - until; FLAC__ASSERT(total_samples_in_input > 0); FLAC__ASSERT(!options.sector_align); if(options.format == FORMAT_RAW) infilesize -= (FLAC__off_t)trim * encoder_session.info.bytes_per_wide_sample; else if(EncoderSession_format_is_iff(&encoder_session)) encoder_session.fmt.iff.data_bytes -= trim * encoder_session.info.bytes_per_wide_sample; encoder_session.total_samples_to_encode -= trim; } if(options.sector_align && (options.format != FORMAT_RAW || infilesize >=0)) { /* for RAW, need to know the filesize */ FLAC__ASSERT(skip == 0); /* asserted above too, but lest we forget */ align_remainder = (uint32_t)(encoder_session.total_samples_to_encode % 588); if(options.is_last_file) encoder_session.total_samples_to_encode += (588-align_remainder); /* will pad with zeroes */ else encoder_session.total_samples_to_encode -= align_remainder; /* will stop short and carry over to next file */ } switch(options.format) { case FORMAT_RAW: encoder_session.unencoded_size = encoder_session.total_samples_to_encode * encoder_session.info.bytes_per_wide_sample; break; case FORMAT_WAVE: /* +44 for the size of the WAVE headers; this is just an estimate for the progress indicator and doesn't need to be exact */ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * encoder_session.info.bytes_per_wide_sample + 44; break; case FORMAT_WAVE64: /* +44 for the size of the WAVE headers; this is just an estimate for the progress indicator and doesn't need to be exact */ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * encoder_session.info.bytes_per_wide_sample + 104; break; case FORMAT_RF64: /* +72 for the size of the RF64 headers; this is just an estimate for the progress indicator and doesn't need to be exact */ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * encoder_session.info.bytes_per_wide_sample + 80; break; case FORMAT_AIFF: case FORMAT_AIFF_C: /* +54 for the size of the AIFF headers; this is just an estimate for the progress indicator and doesn't need to be exact */ encoder_session.unencoded_size = encoder_session.total_samples_to_encode * encoder_session.info.bytes_per_wide_sample + 54; break; case FORMAT_FLAC: case FORMAT_OGGFLAC: if(infilesize < 0) /* if we don't know, use 0 as hint to progress indicator (which is the only place this is used): */ encoder_session.unencoded_size = 0; else if(skip == 0 && until == 0) encoder_session.unencoded_size = (FLAC__uint64)infilesize; else if(total_samples_in_input) encoder_session.unencoded_size = (FLAC__uint64)infilesize * encoder_session.total_samples_to_encode / total_samples_in_input; else encoder_session.unencoded_size = (FLAC__uint64)infilesize; break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } if(encoder_session.total_samples_to_encode == 0) { encoder_session.unencoded_size = 0; flac__utils_printf(stderr, 2, "(No runtime statistics possible; please wait for encoding to finish...)\n"); } if(options.format == FORMAT_FLAC || options.format == FORMAT_OGGFLAC) encoder_session.fmt.flac.client_data.samples_left_to_process = encoder_session.total_samples_to_encode; stats_new_file(); /* init the encoder */ if(!EncoderSession_init_encoder(&encoder_session, options)) return EncoderSession_finish_error(&encoder_session); /* skip over any samples as requested */ if(skip > 0) { switch(options.format) { case FORMAT_RAW: { uint32_t skip_bytes = encoder_session.info.bytes_per_wide_sample * (uint32_t)skip; if(skip_bytes > lookahead_length) { skip_bytes -= lookahead_length; lookahead_length = 0; if(!fskip_ahead(encoder_session.fin, skip_bytes)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } } else { lookahead += skip_bytes; lookahead_length -= skip_bytes; } } break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: case FORMAT_AIFF: case FORMAT_AIFF_C: if(!fskip_ahead(encoder_session.fin, skip * encoder_session.info.bytes_per_wide_sample)) { flac__utils_printf(stderr, 1, "%s: ERROR during read while skipping samples\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } break; case FORMAT_FLAC: case FORMAT_OGGFLAC: /* * have to wait until the FLAC encoder is set up for writing * before any seeking in the input FLAC file, because the seek * itself will usually call the decoder's write callback, and * our decoder's write callback passes samples to our FLAC * encoder */ if(!FLAC__stream_decoder_seek_absolute(encoder_session.fmt.flac.decoder, skip)) { flac__utils_printf(stderr, 1, "%s: ERROR while skipping samples, FLAC decoder state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(encoder_session.fmt.flac.decoder)); return EncoderSession_finish_error(&encoder_session); } break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } } /* * first do any samples in the reservoir */ if(options.sector_align && *options.align_reservoir_samples > 0) { FLAC__ASSERT(options.format != FORMAT_FLAC && options.format != FORMAT_OGGFLAC); /* check again */ if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)options.align_reservoir, *options.align_reservoir_samples)) { print_error_with_state(&encoder_session, "ERROR during encoding"); return EncoderSession_finish_error(&encoder_session); } } /* * decrement infilesize or the data_bytes counter if we need to align the file */ if(options.sector_align) { if(options.is_last_file) { *options.align_reservoir_samples = 0; } else { *options.align_reservoir_samples = align_remainder; if(options.format == FORMAT_RAW) { FLAC__ASSERT(infilesize >= 0); infilesize -= (FLAC__off_t)((*options.align_reservoir_samples) * encoder_session.info.bytes_per_wide_sample); FLAC__ASSERT(infilesize >= 0); } else if(EncoderSession_format_is_iff(&encoder_session)) encoder_session.fmt.iff.data_bytes -= (*options.align_reservoir_samples) * encoder_session.info.bytes_per_wide_sample; } } /* * now do samples from the file */ switch(options.format) { case FORMAT_RAW: if(infilesize < 0) { size_t bytes_read; while(!feof(infile)) { if(lookahead_length > 0) { FLAC__ASSERT(lookahead_length < CHUNK_OF_SAMPLES * encoder_session.info.bytes_per_wide_sample); memcpy(ubuffer.u8, lookahead, lookahead_length); bytes_read = fread(ubuffer.u8+lookahead_length, sizeof(uint8_t), CHUNK_OF_SAMPLES * encoder_session.info.bytes_per_wide_sample - lookahead_length, infile) + lookahead_length; if(ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } lookahead_length = 0; } else bytes_read = fread(ubuffer.u8, sizeof(uint8_t), CHUNK_OF_SAMPLES * encoder_session.info.bytes_per_wide_sample, infile); if(bytes_read == 0) { if(ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } } else if(bytes_read % encoder_session.info.bytes_per_wide_sample != 0) { flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else { uint32_t wide_samples = bytes_read / encoder_session.info.bytes_per_wide_sample; if(!format_input(input_, wide_samples, encoder_session.info.is_big_endian, encoder_session.info.is_unsigned_samples, encoder_session.info.channels, encoder_session.info.bits_per_sample, encoder_session.info.shift, channel_map)) return EncoderSession_finish_error(&encoder_session); if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) { print_error_with_state(&encoder_session, "ERROR during encoding"); return EncoderSession_finish_error(&encoder_session); } } } } else { size_t bytes_read; const FLAC__uint64 max_input_bytes = infilesize; FLAC__uint64 total_input_bytes_read = 0; while(total_input_bytes_read < max_input_bytes) { { size_t wanted = (CHUNK_OF_SAMPLES * encoder_session.info.bytes_per_wide_sample); wanted = (size_t) min((FLAC__uint64)wanted, max_input_bytes - total_input_bytes_read); if(lookahead_length > 0) { FLAC__ASSERT(lookahead_length <= wanted); memcpy(ubuffer.u8, lookahead, lookahead_length); wanted -= lookahead_length; bytes_read = lookahead_length; if(wanted > 0) { bytes_read += fread(ubuffer.u8+lookahead_length, sizeof(uint8_t), wanted, infile); if(ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } } lookahead_length = 0; } else bytes_read = fread(ubuffer.u8, sizeof(uint8_t), wanted, infile); } if(bytes_read == 0) { if(ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else if(feof(infile)) { flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %" PRIu64 " samples, got %" PRIu64 " samples\n", encoder_session.inbasefilename, encoder_session.total_samples_to_encode, encoder_session.samples_written); if(encoder_session.treat_warnings_as_errors) return EncoderSession_finish_error(&encoder_session); total_input_bytes_read = max_input_bytes; } } else { if(bytes_read % encoder_session.info.bytes_per_wide_sample != 0) { flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else { uint32_t wide_samples = bytes_read / encoder_session.info.bytes_per_wide_sample; if(!format_input(input_, wide_samples, encoder_session.info.is_big_endian, encoder_session.info.is_unsigned_samples, encoder_session.info.channels, encoder_session.info.bits_per_sample, encoder_session.info.shift, channel_map)) return EncoderSession_finish_error(&encoder_session); if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) { print_error_with_state(&encoder_session, "ERROR during encoding"); return EncoderSession_finish_error(&encoder_session); } total_input_bytes_read += bytes_read; } } } } break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: case FORMAT_AIFF: case FORMAT_AIFF_C: while(encoder_session.fmt.iff.data_bytes > 0) { const size_t bytes_to_read = (size_t) min (sizeof (ubuffer.u8), min (encoder_session.fmt.iff.data_bytes, CHUNK_OF_SAMPLES * (uint64_t) encoder_session.info.bytes_per_wide_sample)); size_t bytes_read = fread(ubuffer.u8, sizeof(uint8_t), bytes_to_read, infile); if(bytes_read == 0) { if(ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else if(feof(infile)) { if(options.ignore_chunk_sizes) { flac__utils_printf(stderr, 1, "%s: INFO: hit EOF with --ignore-chunk-sizes, got %" PRIu64 " samples\n", encoder_session.inbasefilename, encoder_session.samples_written); } else { flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; expected %" PRIu64 " samples, got %" PRIu64 " samples\n", encoder_session.inbasefilename, encoder_session.total_samples_to_encode, encoder_session.samples_written); if(encoder_session.treat_warnings_as_errors) return EncoderSession_finish_error(&encoder_session); } encoder_session.fmt.iff.data_bytes = 0; } } else { if(bytes_read % encoder_session.info.bytes_per_wide_sample != 0) { flac__utils_printf(stderr, 1, "%s: ERROR: got partial sample\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else { uint32_t wide_samples = bytes_read / encoder_session.info.bytes_per_wide_sample; if(!format_input(input_, wide_samples, encoder_session.info.is_big_endian, encoder_session.info.is_unsigned_samples, encoder_session.info.channels, encoder_session.info.bits_per_sample, encoder_session.info.shift, channel_map)) return EncoderSession_finish_error(&encoder_session); if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) { print_error_with_state(&encoder_session, "ERROR during encoding"); return EncoderSession_finish_error(&encoder_session); } encoder_session.fmt.iff.data_bytes -= bytes_read; } } } break; case FORMAT_FLAC: case FORMAT_OGGFLAC: consecutive_eos_count = 0; while(!encoder_session.fmt.flac.client_data.fatal_error && encoder_session.fmt.flac.client_data.samples_left_to_process > 0) { FLAC__StreamDecoderState decoder_state; /* We can also hit the end of stream without samples_left_to_process * going to 0 if there are errors and continue_through_decode_errors * is on, so we want to break in that case too: */ decoder_state = FLAC__stream_decoder_get_state(encoder_session.fmt.flac.decoder); if(encoder_session.continue_through_decode_errors && decoder_state == FLAC__STREAM_DECODER_END_OF_STREAM) break; consecutive_eos_count = decoder_state == FLAC__STREAM_DECODER_END_OF_STREAM ? consecutive_eos_count + 1 : 0; /* Exit loop if we get two or more consecutive FLAC__STREAM_DECODER_END_OF_STREAM events. */ if(consecutive_eos_count >= 2) { flac__utils_printf(stderr, 1, "%s: ERROR: %d consecutive FLAC__STREAM_DECODER_END_OF_STREAM events.\n", encoder_session.inbasefilename, consecutive_eos_count); break; } if(!FLAC__stream_decoder_process_single(encoder_session.fmt.flac.decoder)) { flac__utils_printf(stderr, 1, "%s: ERROR: while decoding FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(encoder_session.fmt.flac.decoder)); return EncoderSession_finish_error(&encoder_session); } } if(encoder_session.fmt.flac.client_data.fatal_error) { flac__utils_printf(stderr, 1, "%s: ERROR: while decoding FLAC input, state = %s\n", encoder_session.inbasefilename, FLAC__stream_decoder_get_resolved_state_string(encoder_session.fmt.flac.decoder)); return EncoderSession_finish_error(&encoder_session); } break; default: FLAC__ASSERT(0); /* double protection */ return EncoderSession_finish_error(&encoder_session); } /* * now read unaligned samples into reservoir or pad with zeroes if necessary */ if(options.sector_align) { if(options.is_last_file) { uint32_t wide_samples = 588 - align_remainder; if(wide_samples < 588) { uint32_t channel; info_align_zero = wide_samples; for(channel = 0; channel < encoder_session.info.channels; channel++) memset(input_[channel], 0, sizeof(input_[0][0]) * wide_samples); if(!EncoderSession_process(&encoder_session, (const FLAC__int32 * const *)input_, wide_samples)) { print_error_with_state(&encoder_session, "ERROR during encoding"); return EncoderSession_finish_error(&encoder_session); } } } else { if(*options.align_reservoir_samples > 0) { size_t bytes_read; FLAC__ASSERT(CHUNK_OF_SAMPLES >= 588); bytes_read = fread(ubuffer.u8, sizeof(uint8_t), (*options.align_reservoir_samples) * encoder_session.info.bytes_per_wide_sample, infile); if(bytes_read == 0 && ferror(infile)) { flac__utils_printf(stderr, 1, "%s: ERROR during read\n", encoder_session.inbasefilename); return EncoderSession_finish_error(&encoder_session); } else if(bytes_read != (*options.align_reservoir_samples) * encoder_session.info.bytes_per_wide_sample) { flac__utils_printf(stderr, 1, "%s: WARNING: unexpected EOF; read %" PRIu64 " bytes; expected %" PRIu64 " samples, got %" PRIu64 " samples\n", encoder_session.inbasefilename, bytes_read, encoder_session.total_samples_to_encode, encoder_session.samples_written); if(encoder_session.treat_warnings_as_errors) return EncoderSession_finish_error(&encoder_session); } else { info_align_carry = *options.align_reservoir_samples; if(!format_input(options.align_reservoir, *options.align_reservoir_samples, encoder_session.info.is_big_endian, encoder_session.info.is_unsigned_samples, encoder_session.info.channels, encoder_session.info.bits_per_sample, encoder_session.info.shift, channel_map)) return EncoderSession_finish_error(&encoder_session); } } } } } return EncoderSession_finish_ok( &encoder_session, info_align_carry, info_align_zero, EncoderSession_format_is_iff(&encoder_session)? options.format_options.iff.foreign_metadata : 0, options.error_on_compression_fail ); } FLAC__bool EncoderSession_construct(EncoderSession *e, encode_options_t options, FLAC__off_t infilesize, FILE *infile, const char *infilename, const char *outfilename, const FLAC__byte *lookahead, uint32_t lookahead_length) { uint32_t i; FLAC__uint32 test = 1; /* * initialize globals */ is_big_endian_host_ = (*((FLAC__byte*)(&test)))? false : true; for(i = 0; i < FLAC__MAX_CHANNELS; i++) input_[i] = &(in_[i][0]); /* * initialize instance */ #if FLAC__HAS_OGG e->use_ogg = options.use_ogg; #endif e->verify = options.verify; e->treat_warnings_as_errors = options.treat_warnings_as_errors; e->continue_through_decode_errors = options.continue_through_decode_errors; e->is_stdout = (0 == strcmp(outfilename, "-")); e->outputfile_opened = false; e->inbasefilename = grabbag__file_get_basename(infilename); e->infilename = infilename; e->outfilename = outfilename; e->total_samples_to_encode = 0; e->unencoded_size = 0; e->bytes_written = 0; e->samples_written = 0; e->stats_frames_interval = 0; e->old_frames_written = 0; memset(&e->info, 0, sizeof(e->info)); e->format = options.format; switch(options.format) { case FORMAT_RAW: break; case FORMAT_WAVE: case FORMAT_WAVE64: case FORMAT_RF64: case FORMAT_AIFF: case FORMAT_AIFF_C: e->fmt.iff.data_bytes = 0; break; case FORMAT_FLAC: case FORMAT_OGGFLAC: e->fmt.flac.decoder = 0; e->fmt.flac.client_data.filesize = infilesize; e->fmt.flac.client_data.lookahead = lookahead; e->fmt.flac.client_data.lookahead_length = lookahead_length; e->fmt.flac.client_data.num_metadata_blocks = 0; e->fmt.flac.client_data.samples_left_to_process = 0; e->fmt.flac.client_data.fatal_error = false; break; default: FLAC__ASSERT(0); /* double protection */ return false; } e->encoder = 0; e->fin = infile; e->seek_table_template = 0; if(0 == (e->seek_table_template = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE))) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename); return false; } e->encoder = FLAC__stream_encoder_new(); if(0 == e->encoder) { flac__utils_printf(stderr, 1, "%s: ERROR creating the encoder instance\n", e->inbasefilename); EncoderSession_destroy(e); return false; } return true; } void EncoderSession_destroy(EncoderSession *e) { if(e->format == FORMAT_FLAC || e->format == FORMAT_OGGFLAC) { size_t i; if(e->fmt.flac.decoder) FLAC__stream_decoder_delete(e->fmt.flac.decoder); e->fmt.flac.decoder = 0; for(i = 0; i < e->fmt.flac.client_data.num_metadata_blocks; i++) FLAC__metadata_object_delete(e->fmt.flac.client_data.metadata_blocks[i]); e->fmt.flac.client_data.num_metadata_blocks = 0; } if(e->fin != stdin) fclose(e->fin); if(0 != e->encoder) { FLAC__stream_encoder_delete(e->encoder); e->encoder = 0; } if(0 != e->seek_table_template) { FLAC__metadata_object_delete(e->seek_table_template); e->seek_table_template = 0; } } int EncoderSession_finish_ok(EncoderSession *e, int info_align_carry, int info_align_zero, foreign_metadata_t *foreign_metadata, FLAC__bool error_on_compression_fail) { FLAC__StreamEncoderState fse_state = FLAC__STREAM_ENCODER_OK; int ret = 0; FLAC__bool verify_error = false; if(e->encoder) { fse_state = FLAC__stream_encoder_get_state(e->encoder); ret = FLAC__stream_encoder_finish(e->encoder)? 0 : 1; verify_error = fse_state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA || FLAC__stream_encoder_get_state(e->encoder) == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA ; } /* all errors except verify errors should interrupt the stats */ if(ret && !verify_error) print_error_with_state(e, "ERROR during encoding"); else if(e->total_samples_to_encode > 0) { print_stats(e); flac__utils_printf(stderr, 2, "\n"); } if(verify_error) { print_verify_error(e); ret = 1; } else { if(info_align_carry >= 0) { flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d samples to be carried over\n", e->inbasefilename, info_align_carry); } if(info_align_zero >= 0) { flac__utils_printf(stderr, 1, "%s: INFO: sector alignment causing %d zero samples to be appended\n", e->inbasefilename, info_align_zero); } } /*@@@@@@ should this go here or somewhere else? */ if(ret == 0 && foreign_metadata) { const char *error; if(!flac__foreign_metadata_write_to_flac(foreign_metadata, e->infilename, e->outfilename, &error)) { flac__utils_printf(stderr, 1, "%s: ERROR: updating foreign metadata in FLAC file: %s\n", e->inbasefilename, error); ret = 1; } } if (e->compression_ratio >= 1.0 && error_on_compression_fail) { flac__utils_printf(stderr, 1, "FAILURE: Compression failed (ratio %0.3f, should be < 1.0).\n" "This happens for some files for one or more of the following reasons:\n" " * Recompressing an existing FLAC from a higher to a lower compression setting.\n" " * Insufficient input data (e.g. very short files, < 10000 frames).\n" " * The audio data is not compressible (e.g. a full range white noise signal).\n" , e->compression_ratio); ret = 1; } EncoderSession_destroy(e); return ret; } int EncoderSession_finish_error(EncoderSession *e) { FLAC__ASSERT(e->encoder); if(e->total_samples_to_encode > 0) flac__utils_printf(stderr, 2, "\n"); if(FLAC__stream_encoder_get_state(e->encoder) == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) print_verify_error(e); else if(e->outputfile_opened) /* only want to delete the file if we opened it; otherwise it could be an existing file and our overwrite failed */ flac_unlink(e->outfilename); EncoderSession_destroy(e); return 1; } typedef struct { uint32_t num_metadata; FLAC__bool *needs_delete; FLAC__StreamMetadata **metadata; FLAC__StreamMetadata *cuesheet; /* always needs to be deleted */ } static_metadata_t; static void static_metadata_init(static_metadata_t *m) { m->num_metadata = 0; m->needs_delete = 0; m->metadata = 0; m->cuesheet = 0; } static void static_metadata_clear(static_metadata_t *m) { uint32_t i; for(i = 0; i < m->num_metadata; i++) if(m->needs_delete[i]) FLAC__metadata_object_delete(m->metadata[i]); if(m->metadata) free(m->metadata); if(m->needs_delete) free(m->needs_delete); if(m->cuesheet) FLAC__metadata_object_delete(m->cuesheet); static_metadata_init(m); } static FLAC__bool static_metadata_append(static_metadata_t *m, FLAC__StreamMetadata *d, FLAC__bool needs_delete) { void *x; if(0 == (x = safe_realloc_muladd2_(m->metadata, sizeof(*m->metadata), /*times (*/m->num_metadata, /*+*/1/*)*/))) return false; m->metadata = (FLAC__StreamMetadata**)x; if(0 == (x = safe_realloc_muladd2_(m->needs_delete, sizeof(*m->needs_delete), /*times (*/m->num_metadata, /*+*/1/*)*/))) return false; m->needs_delete = (FLAC__bool*)x; m->metadata[m->num_metadata] = d; m->needs_delete[m->num_metadata] = needs_delete; m->num_metadata++; return true; } FLAC__bool EncoderSession_init_encoder(EncoderSession *e, encode_options_t options) { const uint32_t channels = e->info.channels; const uint32_t bps = e->info.bits_per_sample - e->info.shift; const uint32_t sample_rate = e->info.sample_rate; FLACDecoderData *flac_decoder_data = (e->format == FORMAT_FLAC || e->format == FORMAT_OGGFLAC)? &e->fmt.flac.client_data : 0; FLAC__StreamMetadata padding; FLAC__StreamMetadata **metadata = 0; static_metadata_t static_metadata; uint32_t num_metadata = 0, ic; FLAC__StreamEncoderInitStatus init_status; const FLAC__bool is_cdda = (channels == 1 || channels == 2) && (bps == 16) && (sample_rate == 44100); char apodizations[2000]; FLAC__ASSERT(sizeof(options.pictures)/sizeof(options.pictures[0]) <= 64); static_metadata_init(&static_metadata); e->replay_gain = options.replay_gain; apodizations[0] = '\0'; if(e->replay_gain) { if(channels != 1 && channels != 2) { flac__utils_printf(stderr, 1, "%s: ERROR, number of channels (%u) must be 1 or 2 for --replay-gain\n", e->inbasefilename, channels); return false; } if(!grabbag__replaygain_is_valid_sample_frequency(sample_rate)) { flac__utils_printf(stderr, 1, "%s: ERROR, invalid sample rate (%u) for --replay-gain\n", e->inbasefilename, sample_rate); return false; } if(options.is_first_file) { if(!grabbag__replaygain_init(sample_rate)) { flac__utils_printf(stderr, 1, "%s: ERROR initializing ReplayGain stage\n", e->inbasefilename); return false; } } } if(!parse_cuesheet(&static_metadata.cuesheet, options.cuesheet_filename, e->inbasefilename, sample_rate, is_cdda, e->total_samples_to_encode, e->treat_warnings_as_errors)) return false; if(!convert_to_seek_table_template(options.requested_seek_points, options.num_requested_seek_points, options.cued_seekpoints? static_metadata.cuesheet : 0, e)) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for seek table\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } /* build metadata */ if(flac_decoder_data) { /* * we're encoding from FLAC so we will use the FLAC file's * metadata as the basis for the encoded file */ { uint32_t i; /* * first handle pictures: simple append any --pictures * specified. */ for(i = 0; i < options.num_pictures; i++) { FLAC__StreamMetadata *pic = FLAC__metadata_object_clone(options.pictures[i]); if(0 == pic) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for PICTURE block\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks++] = pic; } } { /* * next handle vorbis comment: if any tags were specified * or there is no existing vorbis comment, we create a * new vorbis comment (discarding any existing one); else * we keep the existing one. also need to make sure to * propagate any channel mask tag. */ /* @@@ change to append -T values from options.vorbis_comment if input has VC already? */ size_t i, j; FLAC__bool vc_found = false; for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) { if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) vc_found = true; if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT && options.vorbis_comment->data.vorbis_comment.num_comments > 0) { (void) flac__utils_get_channel_mask_tag(flac_decoder_data->metadata_blocks[i], &e->info.channel_mask); flac__utils_printf(stderr, 1, "%s: WARNING, replacing tags from input FLAC file with those given on the command-line\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]); flac_decoder_data->metadata_blocks[i] = 0; } else flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i]; } flac_decoder_data->num_metadata_blocks = j; if((!vc_found || options.vorbis_comment->data.vorbis_comment.num_comments > 0) && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) { /* prepend ours */ FLAC__StreamMetadata *vc = FLAC__metadata_object_clone(options.vorbis_comment); if(0 == vc || (e->info.channel_mask && !flac__utils_set_channel_mask_tag(vc, e->info.channel_mask))) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for VORBIS_COMMENT block\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--) flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1]; flac_decoder_data->metadata_blocks[1] = vc; flac_decoder_data->num_metadata_blocks++; } } { /* * next handle cuesheet: if --cuesheet was specified, use * it; else if file has existing CUESHEET and cuesheet's * lead-out offset is correct, keep it; else no CUESHEET */ size_t i, j; for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) { FLAC__bool existing_cuesheet_is_bad = false; /* check if existing cuesheet matches the input audio */ if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_CUESHEET && 0 == static_metadata.cuesheet) { const FLAC__StreamMetadata_CueSheet *cs = &flac_decoder_data->metadata_blocks[i]->data.cue_sheet; if(e->total_samples_to_encode == 0) { flac__utils_printf(stderr, 1, "%s: WARNING, cuesheet in input FLAC file cannot be kept if input size is not known, dropping it...\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } existing_cuesheet_is_bad = true; } else if(cs->num_tracks > 0 && e->total_samples_to_encode != cs->tracks[cs->num_tracks-1].offset) { flac__utils_printf(stderr, 1, "%s: WARNING, lead-out offset of cuesheet in input FLAC file does not match input length, dropping existing cuesheet...\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } existing_cuesheet_is_bad = true; } } if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_CUESHEET && (existing_cuesheet_is_bad || 0 != static_metadata.cuesheet)) { if(0 != static_metadata.cuesheet) { flac__utils_printf(stderr, 1, "%s: WARNING, replacing cuesheet in input FLAC file with the one given on the command-line\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } } FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]); flac_decoder_data->metadata_blocks[i] = 0; } else flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i]; } flac_decoder_data->num_metadata_blocks = j; if(0 != static_metadata.cuesheet && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) { /* prepend ours */ FLAC__StreamMetadata *cs = FLAC__metadata_object_clone(static_metadata.cuesheet); if(0 == cs) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for CUESHEET block\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--) flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1]; flac_decoder_data->metadata_blocks[1] = cs; flac_decoder_data->num_metadata_blocks++; } } { /* * next handle seektable: if -S- was specified, no * SEEKTABLE; else if -S was specified, use it/them; * else if file has existing SEEKTABLE and input size is * preserved (no --skip/--until/etc specified), keep it; * else use default seektable options * * note: meanings of num_requested_seek_points: * -1 : no -S option given, default to some value * 0 : -S- given (no seektable) * >0 : one or more -S options given */ size_t i, j; FLAC__bool existing_seektable = false; for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) { if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) existing_seektable = true; if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_SEEKTABLE && (e->total_samples_to_encode != flac_decoder_data->metadata_blocks[0]->data.stream_info.total_samples || options.num_requested_seek_points >= 0)) { if(options.num_requested_seek_points > 0) { flac__utils_printf(stderr, 1, "%s: WARNING, replacing seektable in input FLAC file with the one given on the command-line\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } } else if(options.num_requested_seek_points == 0) ; /* no warning, silently delete existing SEEKTABLE since user specified --no-seektable (-S-) */ else { flac__utils_printf(stderr, 1, "%s: WARNING, can't use existing seektable in input FLAC since the input size is changing or unknown, dropping existing SEEKTABLE block...\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } } FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]); flac_decoder_data->metadata_blocks[i] = 0; existing_seektable = false; } else flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i]; } flac_decoder_data->num_metadata_blocks = j; if((options.num_requested_seek_points > 0 || (options.num_requested_seek_points < 0 && !existing_seektable)) && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) { /* prepend ours */ FLAC__StreamMetadata *st = FLAC__metadata_object_clone(e->seek_table_template); if(0 == st) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for SEEKTABLE block\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } for(i = flac_decoder_data->num_metadata_blocks; i > 1; i--) flac_decoder_data->metadata_blocks[i] = flac_decoder_data->metadata_blocks[i-1]; flac_decoder_data->metadata_blocks[1] = st; flac_decoder_data->num_metadata_blocks++; } } { /* * finally handle padding: if --no-padding was specified, * then delete all padding; else if -P was specified, * use that instead of existing padding (if any); else * if existing file has padding, move all existing * padding blocks to one padding block at the end; else * use default padding. */ int p = -1; size_t i, j; for(i = 0, j = 0; i < flac_decoder_data->num_metadata_blocks; i++) { if(flac_decoder_data->metadata_blocks[i]->type == FLAC__METADATA_TYPE_PADDING) { if(p < 0) p = 0; p += flac_decoder_data->metadata_blocks[i]->length; FLAC__metadata_object_delete(flac_decoder_data->metadata_blocks[i]); flac_decoder_data->metadata_blocks[i] = 0; } else flac_decoder_data->metadata_blocks[j++] = flac_decoder_data->metadata_blocks[i]; } flac_decoder_data->num_metadata_blocks = j; if(options.padding > 0) p = options.padding; if(p < 0) p = e->total_samples_to_encode / sample_rate < 20*60? FLAC_ENCODE__DEFAULT_PADDING : FLAC_ENCODE__DEFAULT_PADDING*8; if(p > 0) p += (e->replay_gain ? GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED : 0); p = min(p, (int)((1u << FLAC__STREAM_METADATA_LENGTH_LEN) - 1)); if(options.padding != 0) { if(p > 0 && flac_decoder_data->num_metadata_blocks < sizeof(flac_decoder_data->metadata_blocks)/sizeof(flac_decoder_data->metadata_blocks[0])) { flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING); if(0 == flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]) { flac__utils_printf(stderr, 1, "%s: ERROR allocating memory for PADDING block\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]->is_last = false; /* the encoder will set this for us */ flac_decoder_data->metadata_blocks[flac_decoder_data->num_metadata_blocks]->length = p; flac_decoder_data->num_metadata_blocks++; } } } metadata = &flac_decoder_data->metadata_blocks[1]; /* don't include STREAMINFO */ num_metadata = flac_decoder_data->num_metadata_blocks - 1; } else { /* * we're not encoding from FLAC so we will build the metadata * from scratch */ const foreign_metadata_t *foreign_metadata = EncoderSession_format_is_iff(e)? options.format_options.iff.foreign_metadata : 0; uint32_t i; if(e->seek_table_template->data.seek_table.num_points > 0) { e->seek_table_template->is_last = false; /* the encoder will set this for us */ static_metadata_append(&static_metadata, e->seek_table_template, /*needs_delete=*/false); } if(0 != static_metadata.cuesheet) static_metadata_append(&static_metadata, static_metadata.cuesheet, /*needs_delete=*/false); if(e->info.channel_mask) { if(!flac__utils_set_channel_mask_tag(options.vorbis_comment, e->info.channel_mask)) { flac__utils_printf(stderr, 1, "%s: ERROR adding channel mask tag\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } } static_metadata_append(&static_metadata, options.vorbis_comment, /*needs_delete=*/false); for(i = 0; i < options.num_pictures; i++) static_metadata_append(&static_metadata, options.pictures[i], /*needs_delete=*/false); if(foreign_metadata) { for(i = 0; i < foreign_metadata->num_blocks; i++) { FLAC__StreamMetadata *p = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING); if(!p) { flac__utils_printf(stderr, 1, "%s: ERROR: out of memory\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } static_metadata_append(&static_metadata, p, /*needs_delete=*/true); static_metadata.metadata[static_metadata.num_metadata-1]->length = FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8 + foreign_metadata->blocks[i].size; } } if(options.padding != 0) { padding.is_last = false; /* the encoder will set this for us */ padding.type = FLAC__METADATA_TYPE_PADDING; padding.length = (uint32_t)(options.padding>0? options.padding : (e->total_samples_to_encode / sample_rate < 20*60? FLAC_ENCODE__DEFAULT_PADDING : FLAC_ENCODE__DEFAULT_PADDING*8)) + (e->replay_gain ? GRABBAG__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED : 0); padding.length = min(padding.length, (1u << FLAC__STREAM_METADATA_LENGTH_LEN) - 1); static_metadata_append(&static_metadata, &padding, /*needs_delete=*/false); } metadata = static_metadata.metadata; num_metadata = static_metadata.num_metadata; } /* check for a few things that have not already been checked. the * FLAC__stream_encoder_init*() will check it but only return * FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA so we check some * up front to give a better error message. */ if(!verify_metadata(e, metadata, num_metadata)) { static_metadata_clear(&static_metadata); return false; } FLAC__stream_encoder_set_verify(e->encoder, options.verify); FLAC__stream_encoder_set_streamable_subset(e->encoder, !options.lax); FLAC__stream_encoder_set_channels(e->encoder, channels); FLAC__stream_encoder_set_bits_per_sample(e->encoder, bps); FLAC__stream_encoder_set_sample_rate(e->encoder, sample_rate); for(ic = 0; ic < options.num_compression_settings; ic++) { switch(options.compression_settings[ic].type) { case CST_BLOCKSIZE: FLAC__stream_encoder_set_blocksize(e->encoder, options.compression_settings[ic].value.t_unsigned); break; case CST_COMPRESSION_LEVEL: FLAC__stream_encoder_set_compression_level(e->encoder, options.compression_settings[ic].value.t_unsigned); apodizations[0] = '\0'; break; case CST_DO_MID_SIDE: FLAC__stream_encoder_set_do_mid_side_stereo(e->encoder, options.compression_settings[ic].value.t_bool); break; case CST_LOOSE_MID_SIDE: FLAC__stream_encoder_set_loose_mid_side_stereo(e->encoder, options.compression_settings[ic].value.t_bool); break; case CST_APODIZATION: if(strlen(apodizations)+strlen(options.compression_settings[ic].value.t_string)+2 >= sizeof(apodizations)) { flac__utils_printf(stderr, 1, "%s: ERROR: too many apodization functions requested\n", e->inbasefilename); static_metadata_clear(&static_metadata); return false; } else { safe_strncat(apodizations, options.compression_settings[ic].value.t_string, sizeof(apodizations)); safe_strncat(apodizations, ";", sizeof(apodizations)); } break; case CST_MAX_LPC_ORDER: FLAC__stream_encoder_set_max_lpc_order(e->encoder, options.compression_settings[ic].value.t_unsigned); break; case CST_QLP_COEFF_PRECISION: FLAC__stream_encoder_set_qlp_coeff_precision(e->encoder, options.compression_settings[ic].value.t_unsigned); break; case CST_DO_QLP_COEFF_PREC_SEARCH: FLAC__stream_encoder_set_do_qlp_coeff_prec_search(e->encoder, options.compression_settings[ic].value.t_bool); break; case CST_DO_ESCAPE_CODING: FLAC__stream_encoder_set_do_escape_coding(e->encoder, options.compression_settings[ic].value.t_bool); break; case CST_DO_EXHAUSTIVE_MODEL_SEARCH: FLAC__stream_encoder_set_do_exhaustive_model_search(e->encoder, options.compression_settings[ic].value.t_bool); break; case CST_MIN_RESIDUAL_PARTITION_ORDER: FLAC__stream_encoder_set_min_residual_partition_order(e->encoder, options.compression_settings[ic].value.t_unsigned); break; case CST_MAX_RESIDUAL_PARTITION_ORDER: FLAC__stream_encoder_set_max_residual_partition_order(e->encoder, options.compression_settings[ic].value.t_unsigned); break; case CST_RICE_PARAMETER_SEARCH_DIST: FLAC__stream_encoder_set_rice_parameter_search_dist(e->encoder, options.compression_settings[ic].value.t_unsigned); break; } } if(*apodizations) FLAC__stream_encoder_set_apodization(e->encoder, apodizations); FLAC__stream_encoder_set_total_samples_estimate(e->encoder, e->total_samples_to_encode); FLAC__stream_encoder_set_metadata(e->encoder, (num_metadata > 0)? metadata : 0, num_metadata); FLAC__stream_encoder_disable_constant_subframes(e->encoder, options.debug.disable_constant_subframes); FLAC__stream_encoder_disable_fixed_subframes(e->encoder, options.debug.disable_fixed_subframes); FLAC__stream_encoder_disable_verbatim_subframes(e->encoder, options.debug.disable_verbatim_subframes); if(!options.debug.do_md5) { flac__utils_printf(stderr, 1, "%s: WARNING, MD5 computation disabled, resulting file will not have MD5 sum\n", e->inbasefilename); if(e->treat_warnings_as_errors) { static_metadata_clear(&static_metadata); return false; } FLAC__stream_encoder_set_do_md5(e->encoder, false); } #if FLAC__HAS_OGG if(e->use_ogg) { FLAC__stream_encoder_set_ogg_serial_number(e->encoder, options.serial_number); init_status = FLAC__stream_encoder_init_ogg_file(e->encoder, e->is_stdout? 0 : e->outfilename, encoder_progress_callback, /*client_data=*/e); } else #endif { init_status = FLAC__stream_encoder_init_file(e->encoder, e->is_stdout? 0 : e->outfilename, encoder_progress_callback, /*client_data=*/e); } if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) { print_error_with_init_status(e, "ERROR initializing encoder", init_status); if(FLAC__stream_encoder_get_state(e->encoder) != FLAC__STREAM_ENCODER_IO_ERROR) e->outputfile_opened = true; static_metadata_clear(&static_metadata); return false; } else e->outputfile_opened = true; e->stats_frames_interval = (FLAC__stream_encoder_get_do_exhaustive_model_search(e->encoder) && FLAC__stream_encoder_get_do_qlp_coeff_prec_search(e->encoder))? 0x1f : (FLAC__stream_encoder_get_do_exhaustive_model_search(e->encoder) || FLAC__stream_encoder_get_do_qlp_coeff_prec_search(e->encoder))? 0x3f : 0xff; static_metadata_clear(&static_metadata); return true; } FLAC__bool EncoderSession_process(EncoderSession *e, const FLAC__int32 * const buffer[], uint32_t samples) { if(e->replay_gain) { if(!grabbag__replaygain_analyze(buffer, e->info.channels==2, e->info.bits_per_sample, samples)) { flac__utils_printf(stderr, 1, "%s: WARNING, error while calculating ReplayGain\n", e->inbasefilename); if(e->treat_warnings_as_errors) return false; } } return FLAC__stream_encoder_process(e->encoder, buffer, samples); } FLAC__bool EncoderSession_format_is_iff(const EncoderSession *e) { return e->format == FORMAT_WAVE || e->format == FORMAT_WAVE64 || e->format == FORMAT_RF64 || e->format == FORMAT_AIFF || e->format == FORMAT_AIFF_C; } FLAC__bool convert_to_seek_table_template(const char *requested_seek_points, int num_requested_seek_points, FLAC__StreamMetadata *cuesheet, EncoderSession *e) { const FLAC__bool only_placeholders = e->is_stdout; FLAC__bool has_real_points; if(num_requested_seek_points == 0 && 0 == cuesheet) return true; if(num_requested_seek_points < 0) { #if FLAC__HAS_OGG /*@@@@@@ workaround ogg bug: too many seekpoints makes table not fit in one page */ if(e->use_ogg && e->total_samples_to_encode > 0 && e->total_samples_to_encode / e->info.sample_rate / 10 > 230) requested_seek_points = "230x;"; else #endif requested_seek_points = "10s;"; num_requested_seek_points = 1; } if(num_requested_seek_points > 0) { if(!grabbag__seektable_convert_specification_to_template(requested_seek_points, only_placeholders, e->total_samples_to_encode, e->info.sample_rate, e->seek_table_template, &has_real_points)) return false; } if(0 != cuesheet) { uint32_t i, j; const FLAC__StreamMetadata_CueSheet *cs = &cuesheet->data.cue_sheet; for(i = 0; i < cs->num_tracks; i++) { const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+i; for(j = 0; j < tr->num_indices; j++) { if(!FLAC__metadata_object_seektable_template_append_point(e->seek_table_template, tr->offset + tr->indices[j].offset)) return false; has_real_points = true; } } if(has_real_points) if(!FLAC__metadata_object_seektable_template_sort(e->seek_table_template, /*compact=*/true)) return false; } if(has_real_points) { if(e->is_stdout) { flac__utils_printf(stderr, 1, "%s: WARNING, cannot write back seekpoints when encoding to stdout\n", e->inbasefilename); if(e->treat_warnings_as_errors) return false; } } return true; } FLAC__bool canonicalize_until_specification(utils__SkipUntilSpecification *spec, const char *inbasefilename, uint32_t sample_rate, FLAC__uint64 skip, FLAC__uint64 total_samples_in_input) { /* convert from mm:ss.sss to sample number if necessary */ flac__utils_canonicalize_skip_until_specification(spec, sample_rate); /* special case: if "--until=-0", use the special value '0' to mean "end-of-stream" */ if(spec->is_relative && spec->value.samples == 0) { spec->is_relative = false; return true; } /* in any other case the total samples in the input must be known */ if(total_samples_in_input == 0) { flac__utils_printf(stderr, 1, "%s: ERROR, cannot use --until when input length is unknown\n", inbasefilename); return false; } FLAC__ASSERT(spec->value_is_samples); /* convert relative specifications to absolute */ if(spec->is_relative) { if(spec->value.samples <= 0) spec->value.samples += (FLAC__int64)total_samples_in_input; else spec->value.samples += skip; spec->is_relative = false; } /* error check */ if(spec->value.samples < 0) { flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before beginning of input\n", inbasefilename); return false; } if((FLAC__uint64)spec->value.samples <= skip) { flac__utils_printf(stderr, 1, "%s: ERROR, --until value is before --skip point\n", inbasefilename); return false; } if((FLAC__uint64)spec->value.samples > total_samples_in_input) { flac__utils_printf(stderr, 1, "%s: ERROR, --until value is after end of input\n", inbasefilename); return false; } return true; } FLAC__bool verify_metadata(const EncoderSession *e, FLAC__StreamMetadata **metadata, uint32_t num_metadata) { FLAC__bool metadata_picture_has_type1 = false; FLAC__bool metadata_picture_has_type2 = false; uint32_t i; FLAC__ASSERT(0 != metadata); for(i = 0; i < num_metadata; i++) { const FLAC__StreamMetadata *m = metadata[i]; if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) { if(!FLAC__format_seektable_is_legal(&m->data.seek_table)) { flac__utils_printf(stderr, 1, "%s: ERROR: SEEKTABLE metadata block is invalid\n", e->inbasefilename); return false; } } else if(m->type == FLAC__METADATA_TYPE_CUESHEET) { if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0)) { flac__utils_printf(stderr, 1, "%s: ERROR: CUESHEET metadata block is invalid\n", e->inbasefilename); return false; } } else if(m->type == FLAC__METADATA_TYPE_PICTURE) { const char *error = 0; if(!FLAC__format_picture_is_legal(&m->data.picture, &error)) { flac__utils_printf(stderr, 1, "%s: ERROR: PICTURE metadata block is invalid: %s\n", e->inbasefilename, error); return false; } if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) { if(metadata_picture_has_type1) { flac__utils_printf(stderr, 1, "%s: ERROR: there may only be one picture of type 1 (32x32 icon) in the file\n", e->inbasefilename); return false; } metadata_picture_has_type1 = true; } else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) { if(metadata_picture_has_type2) { flac__utils_printf(stderr, 1, "%s: ERROR: there may only be one picture of type 2 (icon) in the file\n", e->inbasefilename); return false; } metadata_picture_has_type2 = true; } } } return true; } FLAC__bool format_input(FLAC__int32 *dest[], uint32_t wide_samples, FLAC__bool is_big_endian, FLAC__bool is_unsigned_samples, uint32_t channels, uint32_t bps, uint32_t shift, size_t *channel_map) { uint32_t wide_sample, sample, channel; FLAC__int32 *out[FLAC__MAX_CHANNELS]; if(0 == channel_map) { for(channel = 0; channel < channels; channel++) out[channel] = dest[channel]; } else { for(channel = 0; channel < channels; channel++) out[channel] = dest[channel_map[channel]]; } if(bps == 8) { if(is_unsigned_samples) { for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) out[channel][wide_sample] = (FLAC__int32)ubuffer.u8[sample] - 0x80; } else { for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) out[channel][wide_sample] = (FLAC__int32)ubuffer.s8[sample]; } } else if(bps == 16) { if(is_big_endian != is_big_endian_host_) { uint8_t tmp; const uint32_t bytes = wide_samples * channels * (bps >> 3); uint32_t b; for(b = 0; b < bytes; b += 2) { tmp = ubuffer.u8[b]; ubuffer.u8[b] = ubuffer.u8[b+1]; ubuffer.u8[b+1] = tmp; } } if(is_unsigned_samples) { for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) out[channel][wide_sample] = ubuffer.u16[sample] - 0x8000; } else { for(sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) out[channel][wide_sample] = ubuffer.s16[sample]; } } else if(bps == 24) { if(!is_big_endian) { uint8_t tmp; const uint32_t bytes = wide_samples * channels * (bps >> 3); uint32_t b; for(b = 0; b < bytes; b += 3) { tmp = ubuffer.u8[b]; ubuffer.u8[b] = ubuffer.u8[b+2]; ubuffer.u8[b+2] = tmp; } } if(is_unsigned_samples) { uint32_t b; for(b = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) { uint32_t t; t = ubuffer.u8[b++]; t <<= 8; t |= ubuffer.u8[b++]; t <<= 8; t |= ubuffer.u8[b++]; out[channel][wide_sample] = (FLAC__int32)t - 0x800000; } } else { uint32_t b; for(b = sample = wide_sample = 0; wide_sample < wide_samples; wide_sample++) for(channel = 0; channel < channels; channel++, sample++) { uint32_t t; t = ubuffer.s8[b++]; t <<= 8; t |= ubuffer.u8[b++]; t <<= 8; t |= ubuffer.u8[b++]; out[channel][wide_sample] = t; } } } else { FLAC__ASSERT(0); } if(shift > 0) { FLAC__int32 mask = (1<>= shift; } } return true; } void encoder_progress_callback(const FLAC__StreamEncoder *encoder, FLAC__uint64 bytes_written, FLAC__uint64 samples_written, uint32_t frames_written, uint32_t total_frames_estimate, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; const FLAC__uint64 uesize = e->unencoded_size; e->progress = e->total_samples_to_encode ? (double)samples_written / (double)e->total_samples_to_encode : 0; e->compression_ratio = (e->progress && uesize) ? (double)e->bytes_written / ((double)uesize * min(1.0, e->progress)) : 0; (void)encoder, (void)total_frames_estimate; e->bytes_written = bytes_written; e->samples_written = samples_written; if(e->total_samples_to_encode > 0 && frames_written - e->old_frames_written > e->stats_frames_interval) { print_stats(e); e->old_frames_written = frames_written; } } FLAC__StreamDecoderReadStatus flac_decoder_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data) { size_t n = 0; EncoderSession *e = (EncoderSession*)client_data; FLACDecoderData *data = &e->fmt.flac.client_data; (void)decoder; if (data->fatal_error) return FLAC__STREAM_DECODER_READ_STATUS_ABORT; /* use up lookahead first */ if (data->lookahead_length) { n = min(data->lookahead_length, *bytes); memcpy(buffer, data->lookahead, n); buffer += n; data->lookahead += n; data->lookahead_length -= n; } /* get the rest from file */ if (*bytes > n) { *bytes = n + fread(buffer, 1, *bytes-n, e->fin); if(ferror(e->fin)) return FLAC__STREAM_DECODER_READ_STATUS_ABORT; else if(0 == *bytes) return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; else return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; } else return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; } FLAC__StreamDecoderSeekStatus flac_decoder_seek_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; (void)decoder; if(fseeko(e->fin, (FLAC__off_t)absolute_byte_offset, SEEK_SET) < 0) return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR; else return FLAC__STREAM_DECODER_SEEK_STATUS_OK; } FLAC__StreamDecoderTellStatus flac_decoder_tell_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; FLAC__off_t pos; (void)decoder; if((pos = ftello(e->fin)) < 0) return FLAC__STREAM_DECODER_TELL_STATUS_ERROR; else { *absolute_byte_offset = (FLAC__uint64)pos; return FLAC__STREAM_DECODER_TELL_STATUS_OK; } } FLAC__StreamDecoderLengthStatus flac_decoder_length_callback(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data) { const EncoderSession *e = (EncoderSession*)client_data; const FLACDecoderData *data = &e->fmt.flac.client_data; (void)decoder; if(data->filesize < 0) return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR; else { *stream_length = (FLAC__uint64)data->filesize; return FLAC__STREAM_DECODER_LENGTH_STATUS_OK; } } FLAC__bool flac_decoder_eof_callback(const FLAC__StreamDecoder *decoder, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; (void)decoder; return feof(e->fin)? true : false; } FLAC__StreamDecoderWriteStatus flac_decoder_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) { EncoderSession *e = (EncoderSession*)client_data; FLACDecoderData *data = &e->fmt.flac.client_data; FLAC__uint64 n = min(data->samples_left_to_process, frame->header.blocksize); (void)decoder; if(!EncoderSession_process(e, buffer, (uint32_t)n)) { print_error_with_state(e, "ERROR during encoding"); data->fatal_error = true; return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; } data->samples_left_to_process -= n; return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; } void flac_decoder_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; FLACDecoderData *data = &e->fmt.flac.client_data; (void)decoder; if (data->fatal_error) return; if ( data->num_metadata_blocks == sizeof(data->metadata_blocks)/sizeof(data->metadata_blocks[0]) || 0 == (data->metadata_blocks[data->num_metadata_blocks] = FLAC__metadata_object_clone(metadata)) ) data->fatal_error = true; else data->num_metadata_blocks++; } void flac_decoder_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) { EncoderSession *e = (EncoderSession*)client_data; FLACDecoderData *data = &e->fmt.flac.client_data; (void)decoder; stats_print_name(1, e->inbasefilename); flac__utils_printf(stderr, 1, "ERROR got %s while decoding FLAC input\n", FLAC__StreamDecoderErrorStatusString[status]); if(!e->continue_through_decode_errors) data->fatal_error = true; } FLAC__bool parse_cuesheet(FLAC__StreamMetadata **cuesheet, const char *cuesheet_filename, const char *inbasefilename, uint32_t sample_rate, FLAC__bool is_cdda, FLAC__uint64 lead_out_offset, FLAC__bool treat_warnings_as_errors) { FILE *f; uint32_t last_line_read; const char *error_message; if(0 == cuesheet_filename) return true; if(lead_out_offset == 0) { flac__utils_printf(stderr, 1, "%s: ERROR cannot import cuesheet when the number of input samples to encode is unknown\n", inbasefilename); return false; } if(0 == (f = flac_fopen(cuesheet_filename, "r"))) { flac__utils_printf(stderr, 1, "%s: ERROR opening cuesheet \"%s\" for reading: %s\n", inbasefilename, cuesheet_filename, strerror(errno)); return false; } *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, sample_rate, is_cdda, lead_out_offset); fclose(f); if(0 == *cuesheet) { flac__utils_printf(stderr, 1, "%s: ERROR parsing cuesheet \"%s\" on line %u: %s\n", inbasefilename, cuesheet_filename, last_line_read, error_message); return false; } if(!FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/false, &error_message)) { flac__utils_printf(stderr, 1, "%s: ERROR parsing cuesheet \"%s\": %s\n", inbasefilename, cuesheet_filename, error_message); return false; } /* if we're expecting CDDA, warn about non-compliance */ if(is_cdda && !FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/true, &error_message)) { flac__utils_printf(stderr, 1, "%s: WARNING cuesheet \"%s\" is not audio CD compliant: %s\n", inbasefilename, cuesheet_filename, error_message); if(treat_warnings_as_errors) return false; (*cuesheet)->data.cue_sheet.is_cd = false; } return true; } static void print_stats(const EncoderSession *encoder_session) { if(flac__utils_verbosity_ >= 2) { char ratiostr[16]; FLAC__ASSERT(encoder_session->total_samples_to_encode > 0); if (encoder_session->compression_ratio > 0.0) flac_snprintf(ratiostr, sizeof(ratiostr), "%0.3f", encoder_session->compression_ratio); else flac_snprintf(ratiostr, sizeof(ratiostr), "N/A"); if(encoder_session->samples_written == encoder_session->total_samples_to_encode) { stats_print_name(2, encoder_session->inbasefilename); stats_print_info(2, "%swrote %" PRIu64 " bytes, ratio=%s", encoder_session->verify? "Verify OK, " : "", encoder_session->bytes_written, ratiostr ); } else { stats_print_name(2, encoder_session->inbasefilename); stats_print_info(2, "%u%% complete, ratio=%s", (uint32_t)floor(encoder_session->progress * 100.0 + 0.5), ratiostr); } } } void print_error_with_init_status(const EncoderSession *e, const char *message, FLAC__StreamEncoderInitStatus init_status) { const int ilen = strlen(e->inbasefilename) + 1; const char *state_string = ""; flac__utils_printf(stderr, 1, "\n%s: %s\n", e->inbasefilename, message); flac__utils_printf(stderr, 1, "%*s init_status = %s\n", ilen, "", FLAC__StreamEncoderInitStatusString[init_status]); if(init_status == FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR) { state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder); flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", state_string); /* print out some more info for some errors: */ if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_CLIENT_ERROR])) { flac__utils_printf(stderr, 1, "\n" "An error occurred while writing; the most common cause is that the disk is full.\n" ); } else if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_IO_ERROR])) { flac__utils_printf(stderr, 1, "\n" "An error occurred opening the output file; it is likely that the output\n" "directory does not exist or is not writable, the output file already exists and\n" "is not writable, or the disk is full.\n" ); } } else if(init_status == FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE) { flac__utils_printf(stderr, 1, "\n" "The encoding parameters specified do not conform to the FLAC Subset and may not\n" "be streamable or playable in hardware devices. If you really understand the\n" "consequences, you can add --lax to the command-line options to encode with\n" "these parameters anyway. See http://xiph.org/flac/format.html#subset\n" ); } } void print_error_with_state(const EncoderSession *e, const char *message) { const int ilen = strlen(e->inbasefilename) + 1; const char *state_string; flac__utils_printf(stderr, 1, "\n%s: %s\n", e->inbasefilename, message); state_string = FLAC__stream_encoder_get_resolved_state_string(e->encoder); flac__utils_printf(stderr, 1, "%*s state = %s\n", ilen, "", state_string); /* print out some more info for some errors: */ if(0 == strcmp(state_string, FLAC__StreamEncoderStateString[FLAC__STREAM_ENCODER_CLIENT_ERROR])) { flac__utils_printf(stderr, 1, "\n" "An error occurred while writing; the most common cause is that the disk is full.\n" ); } } void print_verify_error(EncoderSession *e) { FLAC__uint64 absolute_sample; uint32_t frame_number; uint32_t channel; uint32_t sample; FLAC__int32 expected; FLAC__int32 got; FLAC__stream_encoder_get_verify_decoder_error_stats(e->encoder, &absolute_sample, &frame_number, &channel, &sample, &expected, &got); flac__utils_printf(stderr, 1, "%s: ERROR: mismatch in decoded data, verify FAILED!\n", e->inbasefilename); flac__utils_printf(stderr, 1, " Absolute sample=%" PRIu64 ", frame=%u, channel=%u, sample=%u, expected %d, got %d\n", absolute_sample, frame_number, channel, sample, expected, got); flac__utils_printf(stderr, 1, " In all known cases, verify errors are caused by hardware problems,\n"); flac__utils_printf(stderr, 1, " usually overclocking or bad RAM. Delete %s\n", e->outfilename); flac__utils_printf(stderr, 1, " and repeat the flac command exactly as before. If it does not give a\n"); flac__utils_printf(stderr, 1, " verify error in the exact same place each time you try it, then there is\n"); flac__utils_printf(stderr, 1, " a problem with your hardware; please see the FAQ:\n"); flac__utils_printf(stderr, 1, " http://xiph.org/flac/faq.html#tools__hardware_prob\n"); flac__utils_printf(stderr, 1, " If it does fail in the exact same place every time, keep\n"); flac__utils_printf(stderr, 1, " %s and submit a bug report to:\n", e->outfilename); flac__utils_printf(stderr, 1, " https://sourceforge.net/p/flac/bugs/\n"); flac__utils_printf(stderr, 1, " Make sure to upload the FLAC file and use the \"Monitor\" feature to\n"); flac__utils_printf(stderr, 1, " monitor the bug status.\n"); flac__utils_printf(stderr, 1, "Verify FAILED! Do not trust %s\n", e->outfilename); } FLAC__bool read_bytes(FILE *f, FLAC__byte *buf, size_t n, FLAC__bool eof_ok, const char *fn) { size_t bytes_read = fread(buf, 1, n, f); if(bytes_read == 0) { if(!eof_ok) { flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn); return false; } else return true; } if(bytes_read < n) { flac__utils_printf(stderr, 1, "%s: ERROR: unexpected EOF\n", fn); return false; } return true; } FLAC__bool read_uint16(FILE *f, FLAC__bool big_endian, FLAC__uint16 *val, const char *fn) { if(!read_bytes(f, (FLAC__byte*)val, 2, /*eof_ok=*/false, fn)) return false; if(is_big_endian_host_ != big_endian) { FLAC__byte tmp, *b = (FLAC__byte*)val; tmp = b[1]; b[1] = b[0]; b[0] = tmp; } return true; } FLAC__bool read_uint32(FILE *f, FLAC__bool big_endian, FLAC__uint32 *val, const char *fn) { if(!read_bytes(f, (FLAC__byte*)val, 4, /*eof_ok=*/false, fn)) return false; if(is_big_endian_host_ != big_endian) { FLAC__byte tmp, *b = (FLAC__byte*)val; tmp = b[3]; b[3] = b[0]; b[0] = tmp; tmp = b[2]; b[2] = b[1]; b[1] = tmp; } return true; } FLAC__bool read_uint64(FILE *f, FLAC__bool big_endian, FLAC__uint64 *val, const char *fn) { if(!read_bytes(f, (FLAC__byte*)val, 8, /*eof_ok=*/false, fn)) return false; if(is_big_endian_host_ != big_endian) { FLAC__byte tmp, *b = (FLAC__byte*)val; tmp = b[7]; b[7] = b[0]; b[0] = tmp; tmp = b[6]; b[6] = b[1]; b[1] = tmp; tmp = b[5]; b[5] = b[2]; b[2] = tmp; tmp = b[4]; b[4] = b[3]; b[3] = tmp; } return true; } FLAC__bool read_sane_extended(FILE *f, FLAC__uint32 *val, const char *fn) /* Read an IEEE 754 80-bit (aka SANE) extended floating point value from 'f', * convert it into an integral value and store in 'val'. Return false if only * between 1 and 9 bytes remain in 'f', if 0 bytes remain in 'f', or if the * value is negative, between zero and one, or too large to be represented by * 'val'; return true otherwise. */ { uint32_t i; FLAC__byte buf[10]; FLAC__uint64 p = 0; FLAC__int16 e; FLAC__int16 shift; if(!read_bytes(f, buf, sizeof(buf), /*eof_ok=*/false, fn)) return false; e = ((FLAC__uint16)(buf[0])<<8 | (FLAC__uint16)(buf[1]))-0x3FFF; shift = 63-e; if((buf[0]>>7)==1U || e<0 || e>63) { flac__utils_printf(stderr, 1, "%s: ERROR: invalid floating-point value\n", fn); return false; } for(i = 0; i < 8; ++i) p |= (FLAC__uint64)(buf[i+2])<<(56U-i*8); *val = (FLAC__uint32)((p>>shift)+(p>>(shift-1) & 0x1)); return true; } FLAC__bool fskip_ahead(FILE *f, FLAC__uint64 offset) { static uint8_t dump[8192]; struct flac_stat_s stb; if(flac_fstat(fileno(f), &stb) == 0 && (stb.st_mode & S_IFMT) == S_IFREG) { if(fseeko(f, offset, SEEK_CUR) == 0) return true; } while(offset > 0) { const long need = (long)min(offset, sizeof(dump)); if((long)fread(dump, 1, need, f) < need) return false; offset -= need; } return true; } uint32_t count_channel_mask_bits(FLAC__uint32 mask) { uint32_t count = 0; while(mask) { if(mask & 1) count++; mask >>= 1; } return count; } #if 0 FLAC__uint32 limit_channel_mask(FLAC__uint32 mask, uint32_t channels) { FLAC__uint32 x = 0x80000000; uint32_t count = count_channel_mask_bits(mask); while(x && count > channels) { if(mask & x) { mask &= ~x; count--; } x >>= 1; } FLAC__ASSERT(count_channel_mask_bits(mask) == channels); return mask; } #endif