diff options
Diffstat (limited to 'libavformat/wavenc.c')
| -rw-r--r-- | libavformat/wavenc.c | 465 |
1 files changed, 435 insertions, 30 deletions
diff --git a/libavformat/wavenc.c b/libavformat/wavenc.c index 25f6ffcde0..c73c9009d5 100644 --- a/libavformat/wavenc.c +++ b/libavformat/wavenc.c @@ -2,30 +2,42 @@ * WAV muxer * Copyright (c) 2001, 2002 Fabrice Bellard * - * This file is part of Libav. + * Sony Wave64 muxer + * Copyright (c) 2012 Paul B Mahol * - * Libav is free software; you can redistribute it and/or + * WAV muxer RF64 support + * Copyright (c) 2013 Daniel Verkamp <daniel@drv.nu> + * + * EBU Tech 3285 - Supplement 3 - Peak Envelope Chunk encoder + * Copyright (c) 2014 Georg Lippitsch <georg.lippitsch@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stdint.h> #include <string.h> +#include "libavutil/avstring.h" #include "libavutil/dict.h" #include "libavutil/common.h" +#include "libavutil/intreadwrite.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" +#include "libavutil/time.h" #include "avformat.h" #include "avio.h" @@ -33,16 +45,49 @@ #include "internal.h" #include "riff.h" +#define RF64_AUTO (-1) +#define RF64_NEVER 0 +#define RF64_ALWAYS 1 + +#define PEAK_BUFFER_SIZE 1024 + +typedef enum { + PEAK_OFF = 0, + PEAK_ON, + PEAK_ONLY +} PeakType; + +typedef enum { + PEAK_FORMAT_UINT8 = 1, + PEAK_FORMAT_UINT16 +} PeakFormat; + typedef struct WAVMuxContext { const AVClass *class; int64_t data; int64_t fact_pos; + int64_t ds64; int64_t minpts; int64_t maxpts; + int16_t *peak_maxpos, *peak_maxneg; + uint32_t peak_num_frames; + uint32_t peak_outbuf_size; + uint32_t peak_outbuf_bytes; + uint32_t peak_pos_pop; + uint16_t peak_pop; + uint8_t *peak_output; int last_duration; int write_bext; + int write_peak; + int rf64; + int peak_block_size; + PeakFormat peak_format; + int peak_block_pos; + int peak_ppv; + int peak_bps; } WAVMuxContext; +#if CONFIG_WAV_MUXER static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen) { AVDictionaryEntry *tag; @@ -97,25 +142,197 @@ static void bwf_write_bext_chunk(AVFormatContext *s) ff_end_tag(s->pb, bext); } +static av_cold void peak_free_buffers(AVFormatContext *s) +{ + WAVMuxContext *wav = s->priv_data; + + av_freep(&wav->peak_maxpos); + av_freep(&wav->peak_maxneg); + av_freep(&wav->peak_output); +} + +static av_cold int peak_init_writer(AVFormatContext *s) +{ + WAVMuxContext *wav = s->priv_data; + AVCodecContext *enc = s->streams[0]->codec; + + if (enc->codec_id != AV_CODEC_ID_PCM_S8 && + enc->codec_id != AV_CODEC_ID_PCM_S16LE && + enc->codec_id != AV_CODEC_ID_PCM_U8 && + enc->codec_id != AV_CODEC_ID_PCM_U16LE) { + av_log(s, AV_LOG_ERROR, "%s codec not supported for Peak Chunk\n", + s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); + return -1; + } + + wav->peak_bps = av_get_bits_per_sample(enc->codec_id) / 8; + + if (wav->peak_bps == 1 && wav->peak_format == PEAK_FORMAT_UINT16) { + av_log(s, AV_LOG_ERROR, + "Writing 16 bit peak for 8 bit audio does not make sense\n"); + return AVERROR(EINVAL); + } + + wav->peak_maxpos = av_mallocz_array(enc->channels, sizeof(*wav->peak_maxpos)); + wav->peak_maxneg = av_mallocz_array(enc->channels, sizeof(*wav->peak_maxneg)); + wav->peak_output = av_malloc(PEAK_BUFFER_SIZE); + if (!wav->peak_maxpos || !wav->peak_maxneg || !wav->peak_output) + goto nomem; + + wav->peak_outbuf_size = PEAK_BUFFER_SIZE; + + return 0; + +nomem: + av_log(s, AV_LOG_ERROR, "Out of memory\n"); + peak_free_buffers(s); + return AVERROR(ENOMEM); +} + +static void peak_write_frame(AVFormatContext *s) +{ + WAVMuxContext *wav = s->priv_data; + AVCodecContext *enc = s->streams[0]->codec; + int peak_of_peaks; + int c; + + if (!wav->peak_output) + return; + + for (c = 0; c < enc->channels; c++) { + wav->peak_maxneg[c] = -wav->peak_maxneg[c]; + + if (wav->peak_bps == 2 && wav->peak_format == PEAK_FORMAT_UINT8) { + wav->peak_maxpos[c] = wav->peak_maxpos[c] / 256; + wav->peak_maxneg[c] = wav->peak_maxneg[c] / 256; + } + + if (wav->peak_ppv == 1) + wav->peak_maxpos[c] = + FFMAX(wav->peak_maxpos[c], wav->peak_maxneg[c]); + + peak_of_peaks = FFMAX3(wav->peak_maxpos[c], wav->peak_maxneg[c], + wav->peak_pop); + if (peak_of_peaks > wav->peak_pop) + wav->peak_pos_pop = wav->peak_num_frames; + wav->peak_pop = peak_of_peaks; + + if (wav->peak_outbuf_size - wav->peak_outbuf_bytes < + wav->peak_format * wav->peak_ppv) { + wav->peak_outbuf_size += PEAK_BUFFER_SIZE; + wav->peak_output = av_realloc(wav->peak_output, + wav->peak_outbuf_size); + if (!wav->peak_output) { + av_log(s, AV_LOG_ERROR, "No memory for peak data\n"); + return; + } + } + + if (wav->peak_format == PEAK_FORMAT_UINT8) { + wav->peak_output[wav->peak_outbuf_bytes++] = + wav->peak_maxpos[c]; + if (wav->peak_ppv == 2) { + wav->peak_output[wav->peak_outbuf_bytes++] = + wav->peak_maxneg[c]; + } + } else { + AV_WL16(wav->peak_output + wav->peak_outbuf_bytes, + wav->peak_maxpos[c]); + wav->peak_outbuf_bytes += 2; + if (wav->peak_ppv == 2) { + AV_WL16(wav->peak_output + wav->peak_outbuf_bytes, + wav->peak_maxneg[c]); + wav->peak_outbuf_bytes += 2; + } + } + wav->peak_maxpos[c] = 0; + wav->peak_maxneg[c] = 0; + } + wav->peak_num_frames++; +} + +static void peak_write_chunk(AVFormatContext *s) +{ + WAVMuxContext *wav = s->priv_data; + AVIOContext *pb = s->pb; + AVCodecContext *enc = s->streams[0]->codec; + int64_t peak = ff_start_tag(s->pb, "levl"); + int64_t now0; + time_t now_secs; + char timestamp[28]; + + /* Peak frame of incomplete block at end */ + if (wav->peak_block_pos) + peak_write_frame(s); + + memset(timestamp, 0, sizeof(timestamp)); + if (!(s->flags & AVFMT_FLAG_BITEXACT)) { + av_log(s, AV_LOG_INFO, "Writing local time and date to Peak Envelope Chunk\n"); + now0 = av_gettime(); + now_secs = now0 / 1000000; + strftime(timestamp, sizeof(timestamp), "%Y:%m:%d:%H:%M:%S:", localtime(&now_secs)); + av_strlcatf(timestamp, sizeof(timestamp), "%03d", (int)((now0 / 1000) % 1000)); + } + + avio_wl32(pb, 1); /* version */ + avio_wl32(pb, wav->peak_format); /* 8 or 16 bit */ + avio_wl32(pb, wav->peak_ppv); /* positive and negative */ + avio_wl32(pb, wav->peak_block_size); /* frames per value */ + avio_wl32(pb, enc->channels); /* number of channels */ + avio_wl32(pb, wav->peak_num_frames); /* number of peak frames */ + avio_wl32(pb, wav->peak_pos_pop); /* audio sample frame index */ + avio_wl32(pb, 128); /* equal to size of header */ + avio_write(pb, timestamp, 28); /* ASCII time stamp */ + ffio_fill(pb, 0, 60); + + avio_write(pb, wav->peak_output, wav->peak_outbuf_bytes); + + ff_end_tag(pb, peak); + + if (!wav->data) + wav->data = peak; +} + static int wav_write_header(AVFormatContext *s) { WAVMuxContext *wav = s->priv_data; AVIOContext *pb = s->pb; int64_t fmt; - ffio_wfourcc(pb, "RIFF"); - avio_wl32(pb, 0); /* file length */ + if (s->nb_streams != 1) { + av_log(s, AV_LOG_ERROR, "WAVE files have exactly one stream\n"); + return AVERROR(EINVAL); + } + + if (wav->rf64 == RF64_ALWAYS) { + ffio_wfourcc(pb, "RF64"); + avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */ + } else { + ffio_wfourcc(pb, "RIFF"); + avio_wl32(pb, -1); /* file length */ + } + ffio_wfourcc(pb, "WAVE"); - /* format header */ - fmt = ff_start_tag(pb, "fmt "); - if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) { - const AVCodecDescriptor *desc = avcodec_descriptor_get(s->streams[0]->codec->codec_id); - av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n", - desc ? desc->name : "unknown"); - return AVERROR(ENOSYS); + if (wav->rf64 != RF64_NEVER) { + /* write empty ds64 chunk or JUNK chunk to reserve space for ds64 */ + ffio_wfourcc(pb, wav->rf64 == RF64_ALWAYS ? "ds64" : "JUNK"); + avio_wl32(pb, 28); /* chunk size */ + wav->ds64 = avio_tell(pb); + ffio_fill(pb, 0, 28); + } + + if (wav->write_peak != 2) { + /* format header */ + fmt = ff_start_tag(pb, "fmt "); + if (ff_put_wav_header(pb, s->streams[0]->codec, 0) < 0) { + const AVCodecDescriptor *desc = avcodec_descriptor_get(s->streams[0]->codec->codec_id); + av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n", + desc ? desc->name : "unknown"); + return AVERROR(ENOSYS); + } + ff_end_tag(pb, fmt); } - ff_end_tag(pb, fmt); if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ && s->pb->seekable) { @@ -127,15 +344,23 @@ static int wav_write_header(AVFormatContext *s) if (wav->write_bext) bwf_write_bext_chunk(s); + if (wav->write_peak) { + int ret; + if ((ret = peak_init_writer(s)) < 0) + return ret; + } + avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate); wav->maxpts = wav->last_duration = 0; wav->minpts = INT64_MAX; - /* info header */ - ff_riff_write_info(s); + if (wav->write_peak != 2) { + /* info header */ + ff_riff_write_info(s); - /* data header */ - wav->data = ff_start_tag(pb, "data"); + /* data header */ + wav->data = ff_start_tag(pb, "data"); + } avio_flush(pb); @@ -146,7 +371,31 @@ static int wav_write_packet(AVFormatContext *s, AVPacket *pkt) { AVIOContext *pb = s->pb; WAVMuxContext *wav = s->priv_data; - avio_write(pb, pkt->data, pkt->size); + + if (wav->write_peak != 2) + avio_write(pb, pkt->data, pkt->size); + + if (wav->write_peak) { + int c = 0; + int i; + for (i = 0; i < pkt->size; i += wav->peak_bps) { + if (wav->peak_bps == 1) { + wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], *(int8_t*)(pkt->data + i)); + wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], *(int8_t*)(pkt->data + i)); + } else { + wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], (int16_t)AV_RL16(pkt->data + i)); + wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], (int16_t)AV_RL16(pkt->data + i)); + } + if (++c == s->streams[0]->codec->channels) { + c = 0; + if (++wav->peak_block_pos == wav->peak_block_size) { + peak_write_frame(s); + wav->peak_block_pos = 0; + } + } + } + } + if(pkt->pts != AV_NOPTS_VALUE) { wav->minpts = FFMIN(wav->minpts, pkt->pts); wav->maxpts = FFMAX(wav->maxpts, pkt->pts); @@ -160,33 +409,80 @@ static int wav_write_trailer(AVFormatContext *s) { AVIOContext *pb = s->pb; WAVMuxContext *wav = s->priv_data; - int64_t file_size; + int64_t file_size, data_size; + int64_t number_of_samples = 0; + int rf64 = 0; avio_flush(pb); if (s->pb->seekable) { - ff_end_tag(pb, wav->data); + if (wav->write_peak != 2) { + ff_end_tag(pb, wav->data); + avio_flush(pb); + } + + if (wav->write_peak && wav->peak_output) { + peak_write_chunk(s); + avio_flush(pb); + } /* update file size */ file_size = avio_tell(pb); - avio_seek(pb, 4, SEEK_SET); - avio_wl32(pb, (uint32_t)(file_size - 8)); - avio_seek(pb, file_size, SEEK_SET); + data_size = file_size - wav->data; + if (wav->rf64 == RF64_ALWAYS || (wav->rf64 == RF64_AUTO && file_size - 8 > UINT32_MAX)) { + rf64 = 1; + } else { + avio_seek(pb, 4, SEEK_SET); + avio_wl32(pb, (uint32_t)(file_size - 8)); + avio_seek(pb, file_size, SEEK_SET); - avio_flush(pb); + avio_flush(pb); + } + + number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, + s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, + s->streams[0]->time_base.den); if(s->streams[0]->codec->codec_tag != 0x01) { /* Update num_samps in fact chunk */ - int number_of_samples; - number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, - s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, - s->streams[0]->time_base.den); avio_seek(pb, wav->fact_pos, SEEK_SET); - avio_wl32(pb, number_of_samples); + if (rf64 || (wav->rf64 == RF64_AUTO && number_of_samples > UINT32_MAX)) { + rf64 = 1; + avio_wl32(pb, -1); + } else { + avio_wl32(pb, number_of_samples); + avio_seek(pb, file_size, SEEK_SET); + avio_flush(pb); + } + } + + if (rf64) { + /* overwrite RIFF with RF64 */ + avio_seek(pb, 0, SEEK_SET); + ffio_wfourcc(pb, "RF64"); + avio_wl32(pb, -1); + + /* write ds64 chunk (overwrite JUNK if rf64 == RF64_AUTO) */ + avio_seek(pb, wav->ds64 - 8, SEEK_SET); + ffio_wfourcc(pb, "ds64"); + avio_wl32(pb, 28); /* ds64 chunk size */ + avio_wl64(pb, file_size - 8); /* RF64 chunk size */ + avio_wl64(pb, data_size); /* data chunk size */ + avio_wl64(pb, number_of_samples); /* fact chunk number of samples */ + avio_wl32(pb, 0); /* number of table entries for non-'data' chunks */ + + /* write -1 in data chunk size */ + avio_seek(pb, wav->data - 4, SEEK_SET); + avio_wl32(pb, -1); + avio_seek(pb, file_size, SEEK_SET); avio_flush(pb); } } + + if (wav->write_peak) + peak_free_buffers(s); + return 0; } @@ -194,6 +490,17 @@ static int wav_write_trailer(AVFormatContext *s) #define ENC AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, + { "write_peak", "Write Peak Envelope chunk.", OFFSET(write_peak), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, ENC, "peak" }, + { "off", "Do not write peak chunk.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_OFF }, 0, 0, ENC, "peak" }, + { "on", "Append peak chunk after wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ON }, 0, 0, ENC, "peak" }, + { "only", "Write only peak chunk, omit wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ONLY }, 0, 0, ENC, "peak" }, + { "rf64", "Use RF64 header rather than RIFF for large files.", OFFSET(rf64), AV_OPT_TYPE_INT, { .i64 = RF64_NEVER },-1, 1, ENC, "rf64" }, + { "auto", "Write RF64 header if file grows large enough.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_AUTO }, 0, 0, ENC, "rf64" }, + { "always", "Always write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_ALWAYS }, 0, 0, ENC, "rf64" }, + { "never", "Never write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_NEVER }, 0, 0, ENC, "rf64" }, + { "peak_block_size", "Number of audio samples used to generate each peak frame.", OFFSET(peak_block_size), AV_OPT_TYPE_INT, { .i64 = 256 }, 0, 65536, ENC }, + { "peak_format", "The format of the peak envelope data (1: uint8, 2: uint16).", OFFSET(peak_format), AV_OPT_TYPE_INT, { .i64 = PEAK_FORMAT_UINT16 }, PEAK_FORMAT_UINT8, PEAK_FORMAT_UINT16, ENC }, + { "peak_ppv", "Number of peak points per peak value (1 or 2).", OFFSET(peak_ppv), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, 2, ENC }, { NULL }, }; @@ -219,3 +526,101 @@ AVOutputFormat ff_wav_muxer = { .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, .priv_class = &wav_muxer_class, }; +#endif /* CONFIG_WAV_MUXER */ + +#if CONFIG_W64_MUXER +#include "w64.h" + +static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos) +{ + *pos = avio_tell(pb); + + avio_write(pb, guid, 16); + avio_wl64(pb, INT64_MAX); +} + +static void end_guid(AVIOContext *pb, int64_t start) +{ + int64_t end, pos = avio_tell(pb); + + end = FFALIGN(pos, 8); + ffio_fill(pb, 0, end - pos); + avio_seek(pb, start + 16, SEEK_SET); + avio_wl64(pb, end - start); + avio_seek(pb, end, SEEK_SET); +} + +static int w64_write_header(AVFormatContext *s) +{ + WAVMuxContext *wav = s->priv_data; + AVIOContext *pb = s->pb; + int64_t start; + int ret; + + avio_write(pb, ff_w64_guid_riff, sizeof(ff_w64_guid_riff)); + avio_wl64(pb, -1); + avio_write(pb, ff_w64_guid_wave, sizeof(ff_w64_guid_wave)); + start_guid(pb, ff_w64_guid_fmt, &start); + if ((ret = ff_put_wav_header(pb, s->streams[0]->codec, 0)) < 0) { + av_log(s, AV_LOG_ERROR, "%s codec not supported\n", + s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); + return ret; + } + end_guid(pb, start); + + if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ + && s->pb->seekable) { + start_guid(pb, ff_w64_guid_fact, &wav->fact_pos); + avio_wl64(pb, 0); + end_guid(pb, wav->fact_pos); + } + + start_guid(pb, ff_w64_guid_data, &wav->data); + + return 0; +} + +static int w64_write_trailer(AVFormatContext *s) +{ + AVIOContext *pb = s->pb; + WAVMuxContext *wav = s->priv_data; + int64_t file_size; + + if (pb->seekable) { + end_guid(pb, wav->data); + + file_size = avio_tell(pb); + avio_seek(pb, 16, SEEK_SET); + avio_wl64(pb, file_size); + + if (s->streams[0]->codec->codec_tag != 0x01) { + int64_t number_of_samples; + + number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, + s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, + s->streams[0]->time_base.den); + avio_seek(pb, wav->fact_pos + 24, SEEK_SET); + avio_wl64(pb, number_of_samples); + } + + avio_seek(pb, file_size, SEEK_SET); + avio_flush(pb); + } + + return 0; +} + +AVOutputFormat ff_w64_muxer = { + .name = "w64", + .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), + .extensions = "w64", + .priv_data_size = sizeof(WAVMuxContext), + .audio_codec = AV_CODEC_ID_PCM_S16LE, + .video_codec = AV_CODEC_ID_NONE, + .write_header = w64_write_header, + .write_packet = wav_write_packet, + .write_trailer = w64_write_trailer, + .flags = AVFMT_TS_NONSTRICT, + .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, +}; +#endif /* CONFIG_W64_MUXER */ |