diff options
Diffstat (limited to 'libavcodec/iff.c')
| -rw-r--r-- | libavcodec/iff.c | 1703 |
1 files changed, 1594 insertions, 109 deletions
diff --git a/libavcodec/iff.c b/libavcodec/iff.c index a186e3185c..075ada6ddd 100644 --- a/libavcodec/iff.c +++ b/libavcodec/iff.c @@ -1,28 +1,29 @@ /* - * IFF PBM/ILBM bitmap decoder + * IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder * Copyright (c) 2010 Peter Ross <pross@xvid.org> * Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com> + * Copyright (c) 2016 Paul B Mahol * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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 */ /** * @file - * IFF PBM/ILBM bitmap decoder + * IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder */ #include <stdint.h> @@ -32,12 +33,39 @@ #include "bytestream.h" #include "avcodec.h" #include "internal.h" +#include "mathops.h" + +// TODO: masking bits +typedef enum { + MASK_NONE, + MASK_HAS_MASK, + MASK_HAS_TRANSPARENT_COLOR, + MASK_LASSO +} mask_type; typedef struct IffContext { AVFrame *frame; int planesize; uint8_t * planebuf; + uint8_t * ham_buf; ///< temporary buffer for planar to chunky conversation + uint32_t *ham_palbuf; ///< HAM decode table + uint32_t *mask_buf; ///< temporary buffer for palette indices + uint32_t *mask_palbuf; ///< masking palette table + unsigned compression; ///< delta compression method used + unsigned is_short; ///< short compression method used + unsigned is_interlaced;///< video is interlaced + unsigned is_brush; ///< video is in ANBR format + unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM) + unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise) + unsigned flags; ///< 1 for EHB, 0 is no extra half darkening + unsigned transparency; ///< TODO: transparency color index in palette + unsigned masking; ///< TODO: masking method used int init; // 1 if buffer and palette data already initialized, 0 otherwise + int16_t tvdc[16]; ///< TVDC lookup table + GetByteContext gb; + uint8_t *video[2]; + unsigned video_size; + uint32_t *pal; } IffContext; #define LUT8_PART(plane, v) \ @@ -124,33 +152,228 @@ static av_always_inline uint32_t gray2rgb(const uint32_t x) { */ static int cmap_read_palette(AVCodecContext *avctx, uint32_t *pal) { + IffContext *s = avctx->priv_data; int count, i; + const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); + int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); if (avctx->bits_per_coded_sample > 8) { - av_log(avctx, AV_LOG_ERROR, "bit_per_coded_sample > 8 not supported\n"); + av_log(avctx, AV_LOG_ERROR, "bits_per_coded_sample > 8 not supported\n"); return AVERROR_INVALIDDATA; } count = 1 << avctx->bits_per_coded_sample; // If extradata is smaller than actually needed, fill the remaining with black. - count = FFMIN(avctx->extradata_size / 3, count); + count = FFMIN(palette_size / 3, count); if (count) { for (i = 0; i < count; i++) - pal[i] = 0xFF000000 | AV_RB24(avctx->extradata + i * 3); + pal[i] = 0xFF000000 | AV_RB24(palette + i*3); + if (s->flags && count >= 32) { // EHB + for (i = 0; i < 32; i++) + pal[i + 32] = 0xFF000000 | (AV_RB24(palette + i*3) & 0xFEFEFE) >> 1; + count = FFMAX(count, 64); + } } else { // Create gray-scale color palette for bps < 8 count = 1 << avctx->bits_per_coded_sample; for (i = 0; i < count; i++) pal[i] = 0xFF000000 | gray2rgb((i * 255) >> avctx->bits_per_coded_sample); } + if (s->masking == MASK_HAS_MASK) { + memcpy(pal + (1 << avctx->bits_per_coded_sample), pal, count * 4); + for (i = 0; i < count; i++) + pal[i] &= 0xFFFFFF; + } else if (s->masking == MASK_HAS_TRANSPARENT_COLOR && + s->transparency < 1 << avctx->bits_per_coded_sample) + pal[s->transparency] &= 0xFFFFFF; + return 0; +} + +/** + * Extracts the IFF extra context and updates internal + * decoder structures. + * + * @param avctx the AVCodecContext where to extract extra context to + * @param avpkt the AVPacket to extract extra context from or NULL to use avctx + * @return >= 0 in case of success, a negative error code otherwise + */ +static int extract_header(AVCodecContext *const avctx, + const AVPacket *const avpkt) +{ + IffContext *s = avctx->priv_data; + const uint8_t *buf; + unsigned buf_size = 0; + int i, palette_size; + + if (avctx->extradata_size < 2) { + av_log(avctx, AV_LOG_ERROR, "not enough extradata\n"); + return AVERROR_INVALIDDATA; + } + palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); + + if (avpkt && avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + uint32_t chunk_id; + uint64_t data_size; + GetByteContext *gb = &s->gb; + + bytestream2_skip(gb, 4); + while (bytestream2_get_bytes_left(gb) >= 1) { + chunk_id = bytestream2_get_le32(gb); + data_size = bytestream2_get_be32(gb); + + if (chunk_id == MKTAG('B', 'M', 'H', 'D')) { + bytestream2_skip(gb, data_size + (data_size & 1)); + } else if (chunk_id == MKTAG('A', 'N', 'H', 'D')) { + unsigned extra; + if (data_size < 40) + return AVERROR_INVALIDDATA; + + s->compression = (bytestream2_get_byte(gb) << 8) | (s->compression & 0xFF); + bytestream2_skip(gb, 19); + extra = bytestream2_get_be32(gb); + s->is_short = !(extra & 1); + s->is_brush = extra == 2; + s->is_interlaced = !!(extra & 0x40); + data_size -= 24; + bytestream2_skip(gb, data_size + (data_size & 1)); + } else if (chunk_id == MKTAG('D', 'L', 'T', 'A') || + chunk_id == MKTAG('B', 'O', 'D', 'Y')) { + if (chunk_id == MKTAG('B','O','D','Y')) + s->compression &= 0xFF; + break; + } else if (chunk_id == MKTAG('C', 'M', 'A', 'P')) { + int count = data_size / 3; + uint32_t *pal = s->pal; + + if (count > 256) + return AVERROR_INVALIDDATA; + if (s->ham) { + for (i = 0; i < count; i++) + pal[i] = 0xFF000000 | bytestream2_get_le24(gb); + } else { + for (i = 0; i < count; i++) + pal[i] = 0xFF000000 | bytestream2_get_be24(gb); + } + bytestream2_skip(gb, data_size & 1); + } else { + bytestream2_skip(gb, data_size + (data_size&1)); + } + } + } else if (!avpkt) { + buf = avctx->extradata; + buf_size = bytestream_get_be16(&buf); + if (buf_size <= 1 || palette_size < 0) { + av_log(avctx, AV_LOG_ERROR, + "Invalid palette size received: %u -> palette data offset: %d\n", + buf_size, palette_size); + return AVERROR_INVALIDDATA; + } + } + + if (buf_size >= 41) { + s->compression = bytestream_get_byte(&buf); + s->bpp = bytestream_get_byte(&buf); + s->ham = bytestream_get_byte(&buf); + s->flags = bytestream_get_byte(&buf); + s->transparency = bytestream_get_be16(&buf); + s->masking = bytestream_get_byte(&buf); + for (i = 0; i < 16; i++) + s->tvdc[i] = bytestream_get_be16(&buf); + + if (s->masking == MASK_HAS_MASK) { + if (s->bpp >= 8 && !s->ham) { + avctx->pix_fmt = AV_PIX_FMT_RGB32; + av_freep(&s->mask_buf); + av_freep(&s->mask_palbuf); + s->mask_buf = av_malloc((s->planesize * 32) + AV_INPUT_BUFFER_PADDING_SIZE); + if (!s->mask_buf) + return AVERROR(ENOMEM); + if (s->bpp > 16) { + av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp); + av_freep(&s->mask_buf); + return AVERROR(ENOMEM); + } + s->mask_palbuf = av_malloc((2 << s->bpp) * sizeof(uint32_t) + AV_INPUT_BUFFER_PADDING_SIZE); + if (!s->mask_palbuf) { + av_freep(&s->mask_buf); + return AVERROR(ENOMEM); + } + } + s->bpp++; + } else if (s->masking != MASK_NONE && s->masking != MASK_HAS_TRANSPARENT_COLOR) { + av_log(avctx, AV_LOG_ERROR, "Masking not supported\n"); + return AVERROR_PATCHWELCOME; + } + if (!s->bpp || s->bpp > 32) { + av_log(avctx, AV_LOG_ERROR, "Invalid number of bitplanes: %u\n", s->bpp); + return AVERROR_INVALIDDATA; + } else if (s->ham >= 8) { + av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham); + return AVERROR_INVALIDDATA; + } + + av_freep(&s->ham_buf); + av_freep(&s->ham_palbuf); + + if (s->ham) { + int i, count = FFMIN(palette_size / 3, 1 << s->ham); + int ham_count; + const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); + + s->ham_buf = av_malloc((s->planesize * 8) + AV_INPUT_BUFFER_PADDING_SIZE); + if (!s->ham_buf) + return AVERROR(ENOMEM); + + ham_count = 8 * (1 << s->ham); + s->ham_palbuf = av_malloc((ham_count << !!(s->masking == MASK_HAS_MASK)) * sizeof (uint32_t) + AV_INPUT_BUFFER_PADDING_SIZE); + if (!s->ham_palbuf) { + av_freep(&s->ham_buf); + return AVERROR(ENOMEM); + } + + if (count) { // HAM with color palette attached + // prefill with black and palette and set HAM take direct value mask to zero + memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof (uint32_t)); + for (i=0; i < count; i++) { + s->ham_palbuf[i*2+1] = 0xFF000000 | AV_RL24(palette + i*3); + } + count = 1 << s->ham; + } else { // HAM with grayscale color palette + count = 1 << s->ham; + for (i=0; i < count; i++) { + s->ham_palbuf[i*2] = 0xFF000000; // take direct color value from palette + s->ham_palbuf[i*2+1] = 0xFF000000 | av_le2ne32(gray2rgb((i * 255) >> s->ham)); + } + } + for (i=0; i < count; i++) { + uint32_t tmp = i << (8 - s->ham); + tmp |= tmp >> s->ham; + s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; // just modify blue color component + s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; // just modify red color component + s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; // just modify green color component + s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16; + s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp; + s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8; + } + if (s->masking == MASK_HAS_MASK) { + for (i = 0; i < ham_count; i++) + s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000; + } + } + } + return 0; } static av_cold int decode_end(AVCodecContext *avctx) { IffContext *s = avctx->priv_data; - av_frame_free(&s->frame); av_freep(&s->planebuf); + av_freep(&s->ham_buf); + av_freep(&s->ham_palbuf); + av_freep(&s->video[0]); + av_freep(&s->video[1]); + av_freep(&s->pal); return 0; } @@ -160,11 +383,29 @@ static av_cold int decode_init(AVCodecContext *avctx) int err; if (avctx->bits_per_coded_sample <= 8) { - avctx->pix_fmt = (avctx->bits_per_coded_sample < 8 || - avctx->extradata_size) ? AV_PIX_FMT_PAL8 - : AV_PIX_FMT_GRAY8; + int palette_size; + + if (avctx->extradata_size >= 2) + palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); + else + palette_size = 0; + avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) || + (avctx->extradata_size >= 2 && palette_size) ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8; } else if (avctx->bits_per_coded_sample <= 32) { - avctx->pix_fmt = AV_PIX_FMT_BGR32; + if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8')) { + avctx->pix_fmt = AV_PIX_FMT_RGB32; + } else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N')) { + avctx->pix_fmt = AV_PIX_FMT_RGB444; + } else if (avctx->codec_tag != MKTAG('D', 'E', 'E', 'P')) { + if (avctx->bits_per_coded_sample == 24) { + avctx->pix_fmt = AV_PIX_FMT_0BGR32; + } else if (avctx->bits_per_coded_sample == 32) { + avctx->pix_fmt = AV_PIX_FMT_BGR32; + } else { + avpriv_request_sample(avctx, "unknown bits_per_coded_sample"); + return AVERROR_PATCHWELCOME; + } + } } else { return AVERROR_INVALIDDATA; } @@ -172,16 +413,24 @@ static av_cold int decode_init(AVCodecContext *avctx) if ((err = av_image_check_size(avctx->width, avctx->height, 0, avctx))) return err; s->planesize = FFALIGN(avctx->width, 16) >> 3; // Align plane size in bits to word-boundary - s->planebuf = av_malloc(s->planesize + AV_INPUT_BUFFER_PADDING_SIZE); + s->planebuf = av_malloc(s->planesize * avctx->height + AV_INPUT_BUFFER_PADDING_SIZE); if (!s->planebuf) return AVERROR(ENOMEM); - s->frame = av_frame_alloc(); - if (!s->frame) { - decode_end(avctx); - return AVERROR(ENOMEM); + s->bpp = avctx->bits_per_coded_sample; + + if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + s->video_size = FFALIGN(avctx->width, 2) * avctx->height * s->bpp; + s->video[0] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); + s->video[1] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); + s->pal = av_calloc(256, sizeof(*s->pal)); + if (!s->video[0] || !s->video[1] || !s->pal) + return AVERROR(ENOMEM); } + if ((err = extract_header(avctx, NULL)) < 0) + return err; + return 0; } @@ -195,6 +444,10 @@ static av_cold int decode_init(AVCodecContext *avctx) static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane) { const uint64_t *lut = plane8_lut[plane]; + if (plane >= 8) { + av_log(NULL, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n"); + return; + } do { uint64_t v = AV_RN64A(dst) | lut[*buf++]; AV_WN64A(dst, v); @@ -227,6 +480,47 @@ static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int p } while (--buf_size); } +#define DECODE_HAM_PLANE32(x) \ + first = buf[x] << 1; \ + second = buf[(x)+1] << 1; \ + delta &= pal[first++]; \ + delta |= pal[first]; \ + dst[x] = delta; \ + delta &= pal[second++]; \ + delta |= pal[second]; \ + dst[(x)+1] = delta + +/** + * Converts one line of HAM6/8-encoded chunky buffer to 24bpp. + * + * @param dst the destination 24bpp buffer + * @param buf the source 8bpp chunky buffer + * @param pal the HAM decode table + * @param buf_size the plane size in bytes + */ +static void decode_ham_plane32(uint32_t *dst, const uint8_t *buf, + const uint32_t *const pal, unsigned buf_size) +{ + uint32_t delta = pal[1]; /* first palette entry */ + do { + uint32_t first, second; + DECODE_HAM_PLANE32(0); + DECODE_HAM_PLANE32(2); + DECODE_HAM_PLANE32(4); + DECODE_HAM_PLANE32(6); + buf += 8; + dst += 8; + } while (--buf_size); +} + +static void lookup_pal_indicies(uint32_t *dst, const uint32_t *buf, + const uint32_t *const pal, unsigned width) +{ + do { + *dst++ = pal[*buf++]; + } while (--width); +} + /** * Decode one complete byterun1 encoded line. * @@ -237,162 +531,1353 @@ static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int p * @return number of consumed bytes in byterun1 compressed bitstream */ static int decode_byterun(uint8_t *dst, int dst_size, - const uint8_t *buf, const uint8_t *const buf_end) + GetByteContext *gb) { - const uint8_t *const buf_start = buf; unsigned x; - for (x = 0; x < dst_size && buf < buf_end;) { + for (x = 0; x < dst_size && bytestream2_get_bytes_left(gb) > 0;) { unsigned length; - const int8_t value = *buf++; + const int8_t value = bytestream2_get_byte(gb); if (value >= 0) { - length = value + 1; - memcpy(dst + x, buf, FFMIN3(length, dst_size - x, buf_end - buf)); - buf += length; + length = FFMIN3(value + 1, dst_size - x, bytestream2_get_bytes_left(gb)); + bytestream2_get_buffer(gb, dst + x, length); + if (length < value + 1) + bytestream2_skip(gb, value + 1 - length); } else if (value > -128) { - length = -value + 1; - memset(dst + x, *buf++, FFMIN(length, dst_size - x)); + length = FFMIN(-value + 1, dst_size - x); + memset(dst + x, bytestream2_get_byte(gb), length); } else { // noop continue; } x += length; } - return buf - buf_start; + if (x < dst_size) { + av_log(NULL, AV_LOG_WARNING, "decode_byterun ended before plane size\n"); + memset(dst+x, 0, dst_size - x); + } + return bytestream2_tell(gb); } -static int decode_frame_ilbm(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) +static int decode_byterun2(uint8_t *dst, int height, int line_size, + GetByteContext *gb) { - IffContext *s = avctx->priv_data; - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - const uint8_t *buf_end = buf + buf_size; - int y, plane, res; + GetByteContext cmds; + unsigned count; + int i, y_pos = 0, x_pos = 0; - if ((res = ff_reget_buffer(avctx, s->frame)) < 0) - return res; + if (bytestream2_get_be32(gb) != MKBETAG('V', 'D', 'A', 'T')) + return 0; - if (!s->init && avctx->bits_per_coded_sample <= 8 && - avctx->pix_fmt != AV_PIX_FMT_GRAY8) { - if ((res = cmap_read_palette(avctx, (uint32_t *)s->frame->data[1])) < 0) - return res; + bytestream2_skip(gb, 4); + count = bytestream2_get_be16(gb) - 2; + if (bytestream2_get_bytes_left(gb) < count) + return 0; + + bytestream2_init(&cmds, gb->buffer, count); + bytestream2_skip(gb, count); + + for (i = 0; i < count && x_pos < line_size; i++) { + int8_t cmd = bytestream2_get_byte(&cmds); + int l, r; + + if (cmd == 0) { + l = bytestream2_get_be16(gb); + while (l-- > 0 && x_pos < line_size) { + dst[x_pos + y_pos * line_size ] = bytestream2_get_byte(gb); + dst[x_pos + y_pos++ * line_size + 1] = bytestream2_get_byte(gb); + if (y_pos >= height) { + y_pos = 0; + x_pos += 2; + } + } + } else if (cmd < 0) { + l = -cmd; + while (l-- > 0 && x_pos < line_size) { + dst[x_pos + y_pos * line_size ] = bytestream2_get_byte(gb); + dst[x_pos + y_pos++ * line_size + 1] = bytestream2_get_byte(gb); + if (y_pos >= height) { + y_pos = 0; + x_pos += 2; + } + } + } else if (cmd == 1) { + l = bytestream2_get_be16(gb); + r = bytestream2_get_be16(gb); + while (l-- > 0 && x_pos < line_size) { + dst[x_pos + y_pos * line_size ] = r >> 8; + dst[x_pos + y_pos++ * line_size + 1] = r & 0xFF; + if (y_pos >= height) { + y_pos = 0; + x_pos += 2; + } + } + } else { + l = cmd; + r = bytestream2_get_be16(gb); + while (l-- > 0 && x_pos < line_size) { + dst[x_pos + y_pos * line_size ] = r >> 8; + dst[x_pos + y_pos++ * line_size + 1] = r & 0xFF; + if (y_pos >= height) { + y_pos = 0; + x_pos += 2; + } + } + } } - s->init = 1; - if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M')) { // interleaved - if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { - for (y = 0; y < avctx->height; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; - memset(row, 0, avctx->width); - for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; - plane++) { - decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); - buf += s->planesize; + return bytestream2_tell(gb); +} + +#define DECODE_RGBX_COMMON(type) \ + if (!length) { \ + length = bytestream2_get_byte(gb); \ + if (!length) { \ + length = bytestream2_get_be16(gb); \ + if (!length) \ + return; \ + } \ + } \ + for (i = 0; i < length; i++) { \ + *(type *)(dst + y*linesize + x * sizeof(type)) = pixel; \ + x += 1; \ + if (x >= width) { \ + y += 1; \ + if (y >= height) \ + return; \ + x = 0; \ + } \ + } + +/** + * Decode RGB8 buffer + * @param[out] dst Destination buffer + * @param width Width of destination buffer (pixels) + * @param height Height of destination buffer (pixels) + * @param linesize Line size of destination buffer (bytes) + */ +static void decode_rgb8(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) +{ + int x = 0, y = 0, i, length; + while (bytestream2_get_bytes_left(gb) >= 4) { + uint32_t pixel = 0xFF000000 | bytestream2_get_be24(gb); + length = bytestream2_get_byte(gb) & 0x7F; + DECODE_RGBX_COMMON(uint32_t) + } +} + +/** + * Decode RGBN buffer + * @param[out] dst Destination buffer + * @param width Width of destination buffer (pixels) + * @param height Height of destination buffer (pixels) + * @param linesize Line size of destination buffer (bytes) + */ +static void decode_rgbn(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) +{ + int x = 0, y = 0, i, length; + while (bytestream2_get_bytes_left(gb) >= 2) { + uint32_t pixel = bytestream2_get_be16u(gb); + length = pixel & 0x7; + pixel >>= 4; + DECODE_RGBX_COMMON(uint16_t) + } +} + +/** + * Decode DEEP RLE 32-bit buffer + * @param[out] dst Destination buffer + * @param[in] src Source buffer + * @param src_size Source buffer size (bytes) + * @param width Width of destination buffer (pixels) + * @param height Height of destination buffer (pixels) + * @param linesize Line size of destination buffer (bytes) + */ +static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize) +{ + const uint8_t *src_end = src + src_size; + int x = 0, y = 0, i; + while (src + 5 <= src_end) { + int opcode; + opcode = *(int8_t *)src++; + if (opcode >= 0) { + int size = opcode + 1; + for (i = 0; i < size; i++) { + int length = FFMIN(size - i, width); + memcpy(dst + y*linesize + x * 4, src, length * 4); + src += length * 4; + x += length; + i += length; + if (x >= width) { + x = 0; + y += 1; + if (y >= height) + return; } } - } else { // AV_PIX_FMT_BGR32 - for (y = 0; y < avctx->height; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; - memset(row, 0, avctx->width << 2); - for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; - plane++) { - decodeplane32((uint32_t *)row, buf, - FFMIN(s->planesize, buf_end - buf), plane); - buf += s->planesize; + } else { + int size = -opcode + 1; + uint32_t pixel = AV_RN32(src); + for (i = 0; i < size; i++) { + *(uint32_t *)(dst + y*linesize + x * 4) = pixel; + x += 1; + if (x >= width) { + x = 0; + y += 1; + if (y >= height) + return; } } + src += 4; + } + } +} + +/** + * Decode DEEP TVDC 32-bit buffer + * @param[out] dst Destination buffer + * @param[in] src Source buffer + * @param src_size Source buffer size (bytes) + * @param width Width of destination buffer (pixels) + * @param height Height of destination buffer (pixels) + * @param linesize Line size of destination buffer (bytes) + * @param[int] tvdc TVDC lookup table + */ +static void decode_deep_tvdc32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize, const int16_t *tvdc) +{ + int x = 0, y = 0, plane = 0; + int8_t pixel = 0; + int i, j; + + for (i = 0; i < src_size * 2;) { +#define GETNIBBLE ((i & 1) ? (src[i>>1] & 0xF) : (src[i>>1] >> 4)) + int d = tvdc[GETNIBBLE]; + i++; + if (d) { + pixel += d; + dst[y * linesize + x*4 + plane] = pixel; + x++; + } else { + if (i >= src_size * 2) + return; + d = GETNIBBLE + 1; + i++; + d = FFMIN(d, width - x); + for (j = 0; j < d; j++) { + dst[y * linesize + x*4 + plane] = pixel; + x++; + } } - } else if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { // IFF-PBM - for (y = 0; y < avctx->height && buf < buf_end; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; - memcpy(row, buf, FFMIN(avctx->width, buf_end - buf)); - buf += avctx->width + (avctx->width % 2); // padding if odd + if (x >= width) { + plane++; + if (plane >= 4) { + y++; + if (y >= height) + return; + plane = 0; + } + x = 0; + pixel = 0; + i = (i + 1) & ~1; } } +} - if ((res = av_frame_ref(data, s->frame)) < 0) - return res; +static void decode_short_horizontal_delta(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int bpp, int dst_size) +{ + int planepitch = FFALIGN(w, 16) >> 3; + int pitch = planepitch * bpp; + GetByteContext ptrs, gb; + PutByteContext pb; + unsigned ofssrc, pos; + int i, k; - *got_frame = 1; + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init_writer(&pb, dst, dst_size); - return buf_size; + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + pos = 0; + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + while (bytestream2_peek_be16(&gb) != 0xFFFF && bytestream2_get_bytes_left(&gb) > 3) { + int16_t offset = bytestream2_get_be16(&gb); + unsigned noffset; + + if (offset >= 0) { + unsigned data = bytestream2_get_be16(&gb); + + pos += offset * 2; + noffset = (pos / planepitch) * pitch + (pos % planepitch) + k * planepitch; + bytestream2_seek_p(&pb, noffset, SEEK_SET); + bytestream2_put_be16(&pb, data); + } else { + uint16_t count = bytestream2_get_be16(&gb); + + pos += 2 * -(offset + 2); + for (i = 0; i < count; i++) { + uint16_t data = bytestream2_get_be16(&gb); + + pos += 2; + noffset = (pos / planepitch) * pitch + (pos % planepitch) + k * planepitch; + bytestream2_seek_p(&pb, noffset, SEEK_SET); + bytestream2_put_be16(&pb, data); + } + } + } + } +} + +static void decode_byte_vertical_delta(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int xor, int bpp, int dst_size) +{ + int ncolumns = ((w + 15) / 16) * 2; + int dstpitch = ncolumns * bpp; + unsigned ofsdst, ofssrc, opcode, x; + GetByteContext ptrs, gb; + PutByteContext pb; + int i, j, k; + + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init_writer(&pb, dst, dst_size); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + for (j = 0; j < ncolumns; j++) { + ofsdst = j + k * ncolumns; + + i = bytestream2_get_byte(&gb); + while (i > 0) { + opcode = bytestream2_get_byte(&gb); + + if (opcode == 0) { + opcode = bytestream2_get_byte(&gb); + x = bytestream2_get_byte(&gb); + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (xor && ofsdst < dst_size) { + bytestream2_put_byte(&pb, dst[ofsdst] ^ x); + } else { + bytestream2_put_byte(&pb, x); + } + ofsdst += dstpitch; + opcode--; + } + } else if (opcode < 0x80) { + ofsdst += opcode * dstpitch; + } else { + opcode &= 0x7f; + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (xor && ofsdst < dst_size) { + bytestream2_put_byte(&pb, dst[ofsdst] ^ bytestream2_get_byte(&gb)); + } else { + bytestream2_put_byte(&pb, bytestream2_get_byte(&gb)); + } + ofsdst += dstpitch; + opcode--; + } + } + i--; + } + } + } +} + +static void decode_delta_j(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int h, int bpp, int dst_size) +{ + int32_t pitch; + uint8_t *ptr; + uint32_t type, flag, cols, groups, rows, bytes; + uint32_t offset; + int planepitch_byte = (w + 7) / 8; + int planepitch = ((w + 15) / 16) * 2; + int kludge_j, b, g, r, d; + GetByteContext gb; + + pitch = planepitch * bpp; + kludge_j = w < 320 ? (320 - w) / 8 / 2 : 0; + + bytestream2_init(&gb, buf, buf_end - buf); + + while (bytestream2_get_bytes_left(&gb) >= 2) { + type = bytestream2_get_be16(&gb); + + switch (type) { + case 0: + return; + case 1: + flag = bytestream2_get_be16(&gb); + cols = bytestream2_get_be16(&gb); + groups = bytestream2_get_be16(&gb); + + for (g = 0; g < groups; g++) { + offset = bytestream2_get_be16(&gb); + + if (cols * bpp == 0 || bytestream2_get_bytes_left(&gb) < cols * bpp) { + av_log(NULL, AV_LOG_ERROR, "cols*bpp is invalid (%"PRId32"*%d)", cols, bpp); + return; + } + + if (kludge_j) + offset = ((offset / (320 / 8)) * pitch) + (offset % (320 / 8)) - kludge_j; + else + offset = ((offset / planepitch_byte) * pitch) + (offset % planepitch_byte); + + for (b = 0; b < cols; b++) { + for (d = 0; d < bpp; d++) { + uint8_t value = bytestream2_get_byte(&gb); + + if (offset >= dst_size) + return; + ptr = dst + offset; + + if (flag) + ptr[0] ^= value; + else + ptr[0] = value; + + offset += planepitch; + } + } + if ((cols * bpp) & 1) + bytestream2_skip(&gb, 1); + } + break; + case 2: + flag = bytestream2_get_be16(&gb); + rows = bytestream2_get_be16(&gb); + bytes = bytestream2_get_be16(&gb); + groups = bytestream2_get_be16(&gb); + + for (g = 0; g < groups; g++) { + offset = bytestream2_get_be16(&gb); + + if (kludge_j) + offset = ((offset / (320 / 8)) * pitch) + (offset % (320/ 8)) - kludge_j; + else + offset = ((offset / planepitch_byte) * pitch) + (offset % planepitch_byte); + + for (r = 0; r < rows; r++) { + for (d = 0; d < bpp; d++) { + unsigned noffset = offset + (r * pitch) + d * planepitch; + + if (!bytes || bytestream2_get_bytes_left(&gb) < bytes) { + av_log(NULL, AV_LOG_ERROR, "bytes %"PRId32" is invalid", bytes); + return; + } + + for (b = 0; b < bytes; b++) { + uint8_t value = bytestream2_get_byte(&gb); + + if (noffset >= dst_size) + return; + ptr = dst + noffset; + + if (flag) + ptr[0] ^= value; + else + ptr[0] = value; + + noffset++; + } + } + } + if ((rows * bytes * bpp) & 1) + bytestream2_skip(&gb, 1); + } + break; + default: + return; + } + } } -static int decode_frame_byterun1(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) +static void decode_short_vertical_delta(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int bpp, int dst_size) +{ + int ncolumns = (w + 15) >> 4; + int dstpitch = ncolumns * bpp * 2; + unsigned ofsdst, ofssrc, ofsdata, opcode, x; + GetByteContext ptrs, gb, dptrs, dgb; + PutByteContext pb; + int i, j, k; + + if (buf_end - buf <= 64) + return; + + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init(&dptrs, buf + 32, (buf_end - buf) - 32); + bytestream2_init_writer(&pb, dst, dst_size); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + ofsdata = bytestream2_get_be32(&dptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + return; + + if (ofsdata >= buf_end - buf) + return; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + bytestream2_init(&dgb, buf + ofsdata, buf_end - (buf + ofsdata)); + for (j = 0; j < ncolumns; j++) { + ofsdst = (j + k * ncolumns) * 2; + + i = bytestream2_get_byte(&gb); + while (i > 0) { + opcode = bytestream2_get_byte(&gb); + + if (opcode == 0) { + opcode = bytestream2_get_byte(&gb); + x = bytestream2_get_be16(&dgb); + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + bytestream2_put_be16(&pb, x); + ofsdst += dstpitch; + opcode--; + } + } else if (opcode < 0x80) { + ofsdst += opcode * dstpitch; + } else { + opcode &= 0x7f; + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + bytestream2_put_be16(&pb, bytestream2_get_be16(&dgb)); + ofsdst += dstpitch; + opcode--; + } + } + i--; + } + } + } +} + +static void decode_long_vertical_delta(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int bpp, int dst_size) +{ + int ncolumns = (w + 31) >> 5; + int dstpitch = ((w + 15) / 16 * 2) * bpp; + unsigned ofsdst, ofssrc, ofsdata, opcode, x; + GetByteContext ptrs, gb, dptrs, dgb; + PutByteContext pb; + int i, j, k, h; + + if (buf_end - buf <= 64) + return; + + h = (((w + 15) / 16 * 2) != ((w + 31) / 32 * 4)) ? 1 : 0; + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init(&dptrs, buf + 32, (buf_end - buf) - 32); + bytestream2_init_writer(&pb, dst, dst_size); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + ofsdata = bytestream2_get_be32(&dptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + return; + + if (ofsdata >= buf_end - buf) + return; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + bytestream2_init(&dgb, buf + ofsdata, buf_end - (buf + ofsdata)); + for (j = 0; j < ncolumns; j++) { + ofsdst = (j + k * ncolumns) * 4 - h * (2 * k); + + i = bytestream2_get_byte(&gb); + while (i > 0) { + opcode = bytestream2_get_byte(&gb); + + if (opcode == 0) { + opcode = bytestream2_get_byte(&gb); + if (h && (j == (ncolumns - 1))) { + x = bytestream2_get_be16(&dgb); + bytestream2_skip(&dgb, 2); + } else { + x = bytestream2_get_be32(&dgb); + } + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (h && (j == (ncolumns - 1))) { + bytestream2_put_be16(&pb, x); + } else { + bytestream2_put_be32(&pb, x); + } + ofsdst += dstpitch; + opcode--; + } + } else if (opcode < 0x80) { + ofsdst += opcode * dstpitch; + } else { + opcode &= 0x7f; + + while (opcode) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (h && (j == (ncolumns - 1))) { + bytestream2_put_be16(&pb, bytestream2_get_be16(&dgb)); + bytestream2_skip(&dgb, 2); + } else { + bytestream2_put_be32(&pb, bytestream2_get_be32(&dgb)); + } + ofsdst += dstpitch; + opcode--; + } + } + i--; + } + } + } +} + +static void decode_short_vertical_delta2(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int bpp, int dst_size) +{ + int ncolumns = (w + 15) >> 4; + int dstpitch = ncolumns * bpp * 2; + unsigned ofsdst, ofssrc, opcode, x; + GetByteContext ptrs, gb; + PutByteContext pb; + int i, j, k; + + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init_writer(&pb, dst, dst_size); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + for (j = 0; j < ncolumns; j++) { + ofsdst = (j + k * ncolumns) * 2; + + i = bytestream2_get_be16(&gb); + while (i > 0 && bytestream2_get_bytes_left(&gb) > 4) { + opcode = bytestream2_get_be16(&gb); + + if (opcode == 0) { + opcode = bytestream2_get_be16(&gb); + x = bytestream2_get_be16(&gb); + + while (opcode && bytestream2_get_bytes_left_p(&pb) > 1) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + bytestream2_put_be16(&pb, x); + ofsdst += dstpitch; + opcode--; + } + } else if (opcode < 0x8000) { + ofsdst += opcode * dstpitch; + } else { + opcode &= 0x7fff; + + while (opcode && bytestream2_get_bytes_left(&gb) > 1 && + bytestream2_get_bytes_left_p(&pb) > 1) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); + ofsdst += dstpitch; + opcode--; + } + } + i--; + } + } + } +} + +static void decode_long_vertical_delta2(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int bpp, int dst_size) +{ + int ncolumns = (w + 31) >> 5; + int dstpitch = ((w + 15) / 16 * 2) * bpp; + unsigned ofsdst, ofssrc, opcode, x; + unsigned skip = 0x80000000, mask = skip - 1; + GetByteContext ptrs, gb; + PutByteContext pb; + int i, j, k, h; + + h = (((w + 15) / 16 * 2) != ((w + 31) / 32 * 4)) ? 1 : 0; + bytestream2_init(&ptrs, buf, buf_end - buf); + bytestream2_init_writer(&pb, dst, dst_size); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + for (j = 0; j < ncolumns; j++) { + ofsdst = (j + k * ncolumns) * 4 - h * (2 * k); + + if (h && (j == (ncolumns - 1))) { + skip = 0x8000; + mask = skip - 1; + } + + i = bytestream2_get_be32(&gb); + while (i > 0 && bytestream2_get_bytes_left(&gb) > 4) { + opcode = bytestream2_get_be32(&gb); + + if (opcode == 0) { + if (h && (j == ncolumns - 1)) { + opcode = bytestream2_get_be16(&gb); + x = bytestream2_get_be16(&gb); + } else { + opcode = bytestream2_get_be32(&gb); + x = bytestream2_get_be32(&gb); + } + + while (opcode && bytestream2_get_bytes_left_p(&pb) > 1) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (h && (j == ncolumns - 1)) + bytestream2_put_be16(&pb, x); + else + bytestream2_put_be32(&pb, x); + ofsdst += dstpitch; + opcode--; + } + } else if (opcode < skip) { + ofsdst += opcode * dstpitch; + } else { + opcode &= mask; + + while (opcode && bytestream2_get_bytes_left(&gb) > 1 && + bytestream2_get_bytes_left_p(&pb) > 1) { + bytestream2_seek_p(&pb, ofsdst, SEEK_SET); + if (h && (j == ncolumns - 1)) { + bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); + } else { + bytestream2_put_be32(&pb, bytestream2_get_be32(&gb)); + } + ofsdst += dstpitch; + opcode--; + } + } + i--; + } + } + } +} + +static void decode_delta_d(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int flag, int bpp, int dst_size) +{ + int planepitch = FFALIGN(w, 16) >> 3; + int pitch = planepitch * bpp; + int planepitch_byte = (w + 7) / 8; + unsigned entries, ofssrc; + GetByteContext gb, ptrs; + PutByteContext pb; + int k; + + if (buf_end - buf <= 4 * bpp) + return; + + bytestream2_init_writer(&pb, dst, dst_size); + bytestream2_init(&ptrs, buf, bpp * 4); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + + entries = bytestream2_get_be32(&gb); + while (entries && bytestream2_get_bytes_left(&gb) >= 8) { + int32_t opcode = bytestream2_get_be32(&gb); + unsigned offset = bytestream2_get_be32(&gb); + + bytestream2_seek_p(&pb, (offset / planepitch_byte) * pitch + (offset % planepitch_byte) + k * planepitch, SEEK_SET); + if (opcode >= 0) { + uint32_t x = bytestream2_get_be32(&gb); + while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { + bytestream2_put_be32(&pb, x); + bytestream2_skip_p(&pb, pitch - 4); + opcode--; + } + } else { + opcode = -opcode; + while (opcode && bytestream2_get_bytes_left(&gb) > 0) { + bytestream2_put_be32(&pb, bytestream2_get_be32(&gb)); + bytestream2_skip_p(&pb, pitch - 4); + opcode--; + } + } + entries--; + } + } +} + +static void decode_delta_e(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int flag, int bpp, int dst_size) +{ + int planepitch = FFALIGN(w, 16) >> 3; + int pitch = planepitch * bpp; + int planepitch_byte = (w + 7) / 8; + unsigned entries, ofssrc; + GetByteContext gb, ptrs; + PutByteContext pb; + int k; + + if (buf_end - buf <= 4 * bpp) + return; + + bytestream2_init_writer(&pb, dst, dst_size); + bytestream2_init(&ptrs, buf, bpp * 4); + + for (k = 0; k < bpp; k++) { + ofssrc = bytestream2_get_be32(&ptrs); + + if (!ofssrc) + continue; + + if (ofssrc >= buf_end - buf) + continue; + + bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); + + entries = bytestream2_get_be16(&gb); + while (entries && bytestream2_get_bytes_left(&gb) >= 6) { + int16_t opcode = bytestream2_get_be16(&gb); + unsigned offset = bytestream2_get_be32(&gb); + + bytestream2_seek_p(&pb, (offset / planepitch_byte) * pitch + (offset % planepitch_byte) + k * planepitch, SEEK_SET); + if (opcode >= 0) { + uint16_t x = bytestream2_get_be16(&gb); + while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { + bytestream2_put_be16(&pb, x); + bytestream2_skip_p(&pb, pitch - 2); + opcode--; + } + } else { + opcode = -opcode; + while (opcode && bytestream2_get_bytes_left(&gb) > 0) { + bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); + bytestream2_skip_p(&pb, pitch - 2); + opcode--; + } + } + entries--; + } + } +} + +static void decode_delta_l(uint8_t *dst, + const uint8_t *buf, const uint8_t *buf_end, + int w, int flag, int bpp, int dst_size) +{ + GetByteContext off0, off1, dgb, ogb; + PutByteContext pb; + unsigned poff0, poff1; + int i, k, dstpitch; + int planepitch_byte = (w + 7) / 8; + int planepitch = ((w + 15) / 16) * 2; + int pitch = planepitch * bpp; + + if (buf_end - buf <= 64) + return; + + bytestream2_init(&off0, buf, buf_end - buf); + bytestream2_init(&off1, buf + 32, buf_end - (buf + 32)); + bytestream2_init_writer(&pb, dst, dst_size); + + dstpitch = flag ? (((w + 7) / 8) * bpp): 2; + + for (k = 0; k < bpp; k++) { + poff0 = bytestream2_get_be32(&off0); + poff1 = bytestream2_get_be32(&off1); + + if (!poff0) + continue; + + if (2LL * poff0 >= buf_end - buf) + return; + + if (2LL * poff1 >= buf_end - buf) + return; + + bytestream2_init(&dgb, buf + 2 * poff0, buf_end - (buf + 2 * poff0)); + bytestream2_init(&ogb, buf + 2 * poff1, buf_end - (buf + 2 * poff1)); + + while (bytestream2_peek_be16(&ogb) != 0xFFFF && bytestream2_get_bytes_left(&ogb) >= 4) { + uint32_t offset = bytestream2_get_be16(&ogb); + int16_t cnt = bytestream2_get_be16(&ogb); + uint16_t data; + + offset = ((2 * offset) / planepitch_byte) * pitch + ((2 * offset) % planepitch_byte) + k * planepitch; + if (cnt < 0) { + if (bytestream2_get_bytes_left(&dgb) < 2) + break; + bytestream2_seek_p(&pb, offset, SEEK_SET); + cnt = -cnt; + data = bytestream2_get_be16(&dgb); + for (i = 0; i < cnt; i++) { + bytestream2_put_be16(&pb, data); + bytestream2_skip_p(&pb, dstpitch - 2); + } + } else { + if (bytestream2_get_bytes_left(&dgb) < 2*cnt) + break; + bytestream2_seek_p(&pb, offset, SEEK_SET); + for (i = 0; i < cnt; i++) { + data = bytestream2_get_be16(&dgb); + bytestream2_put_be16(&pb, data); + bytestream2_skip_p(&pb, dstpitch - 2); + } + } + } + } +} + +static int unsupported(AVCodecContext *avctx) +{ + IffContext *s = avctx->priv_data; + avpriv_request_sample(avctx, "bitmap (compression 0x%0x, bpp %i, ham %i, interlaced %i)", s->compression, s->bpp, s->ham, s->is_interlaced); + return AVERROR_INVALIDDATA; +} + +static int decode_frame(AVCodecContext *avctx, + void *data, int *got_frame, + AVPacket *avpkt) { IffContext *s = avctx->priv_data; + AVFrame *frame = data; const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; const uint8_t *buf_end = buf + buf_size; int y, plane, res; + GetByteContext *gb = &s->gb; + const AVPixFmtDescriptor *desc; + + bytestream2_init(gb, avpkt->data, avpkt->size); + + if ((res = extract_header(avctx, avpkt)) < 0) + return res; - if ((res = ff_reget_buffer(avctx, s->frame)) < 0) + if ((res = ff_get_buffer(avctx, frame, 0)) < 0) return res; + s->frame = frame; + + buf += bytestream2_tell(gb); + buf_size -= bytestream2_tell(gb); + desc = av_pix_fmt_desc_get(avctx->pix_fmt); if (!s->init && avctx->bits_per_coded_sample <= 8 && - avctx->pix_fmt != AV_PIX_FMT_GRAY8) { - if ((res = cmap_read_palette(avctx, (uint32_t *)s->frame->data[1])) < 0) + avctx->pix_fmt == AV_PIX_FMT_PAL8) { + if ((res = cmap_read_palette(avctx, (uint32_t *)frame->data[1])) < 0) + return res; + } else if (!s->init && avctx->bits_per_coded_sample <= 8 && + avctx->pix_fmt == AV_PIX_FMT_RGB32) { + if ((res = cmap_read_palette(avctx, s->mask_palbuf)) < 0) return res; } s->init = 1; - if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M')) { // interleaved + if (s->compression <= 0xff && (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M'))) { + if (avctx->pix_fmt == AV_PIX_FMT_PAL8) + memcpy(s->pal, s->frame->data[1], 256 * 4); + } + + switch (s->compression) { + case 0x0: + if (avctx->codec_tag == MKTAG('A', 'C', 'B', 'M')) { + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + memset(frame->data[0], 0, avctx->height * frame->linesize[0]); + for (plane = 0; plane < s->bpp; plane++) { + for (y = 0; y < avctx->height && buf < buf_end; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); + buf += s->planesize; + } + } + } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 + memset(frame->data[0], 0, avctx->height * frame->linesize[0]); + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->ham_buf, 0, s->planesize * 8); + for (plane = 0; plane < s->bpp; plane++) { + const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize; + if (start >= buf_end) + break; + decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane); + } + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else + return unsupported(avctx); + } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { + int raw_width = avctx->width * (av_get_bits_per_pixel(desc) >> 3); + int x; + for (y = 0; y < avctx->height && buf < buf_end; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memcpy(row, buf, FFMIN(raw_width, buf_end - buf)); + buf += raw_width; + if (avctx->pix_fmt == AV_PIX_FMT_BGR32) { + for (x = 0; x < avctx->width; x++) + row[4 * x + 3] = row[4 * x + 3] & 0xF0 | (row[4 * x + 3] >> 4); + } + } + } else if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') || // interleaved + avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) + memcpy(s->video[0], buf, FFMIN(buf_end - buf, s->video_size)); + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(row, 0, avctx->width); + for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { + decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); + buf += s->planesize; + } + } + } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->ham_buf, 0, s->planesize * 8); + for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { + decodeplane8(s->ham_buf, buf, FFMIN(s->planesize, buf_end - buf), plane); + buf += s->planesize; + } + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else { // AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(row, 0, avctx->width << 2); + for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { + decodeplane32((uint32_t *)row, buf, + FFMIN(s->planesize, buf_end - buf), plane); + buf += s->planesize; + } + } + } + } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + for (y = 0; y < avctx->height && buf_end > buf; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memcpy(row, buf, FFMIN(avctx->width, buf_end - buf)); + buf += avctx->width + (avctx->width % 2); // padding if odd + } + } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height && buf_end > buf; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memcpy(s->ham_buf, buf, FFMIN(avctx->width, buf_end - buf)); + buf += avctx->width + (avctx->width & 1); // padding if odd + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else + return unsupported(avctx); + } else { + return unsupported(avctx); + } + break; + case 0x1: + if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') || // interleaved + avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + uint8_t *video = s->video[0]; + + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(row, 0, avctx->width); + for (plane = 0; plane < s->bpp; plane++) { + buf += decode_byterun(s->planebuf, s->planesize, gb); + if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + memcpy(video, s->planebuf, s->planesize); + video += s->planesize; + } + decodeplane8(row, s->planebuf, s->planesize, plane); + } + } + } else if (avctx->bits_per_coded_sample <= 8) { //8-bit (+ mask) to AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->mask_buf, 0, avctx->width * sizeof(uint32_t)); + for (plane = 0; plane < s->bpp; plane++) { + buf += decode_byterun(s->planebuf, s->planesize, gb); + decodeplane32(s->mask_buf, s->planebuf, s->planesize, plane); + } + lookup_pal_indicies((uint32_t *)row, s->mask_buf, s->mask_palbuf, avctx->width); + } + } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 + uint8_t *video = s->video[0]; + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->ham_buf, 0, s->planesize * 8); + for (plane = 0; plane < s->bpp; plane++) { + buf += decode_byterun(s->planebuf, s->planesize, gb); + if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { + memcpy(video, s->planebuf, s->planesize); + video += s->planesize; + } + decodeplane8(s->ham_buf, s->planebuf, s->planesize, plane); + } + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else { // AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(row, 0, avctx->width << 2); + for (plane = 0; plane < s->bpp; plane++) { + buf += decode_byterun(s->planebuf, s->planesize, gb); + decodeplane32((uint32_t *)row, s->planebuf, s->planesize, plane); + } + } + } + } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + buf += decode_byterun(row, avctx->width, gb); + } + } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + buf += decode_byterun(s->ham_buf, avctx->width, gb); + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else + return unsupported(avctx); + } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { // IFF-DEEP + if (av_get_bits_per_pixel(desc) == 32) + decode_deep_rle32(frame->data[0], buf, buf_size, avctx->width, avctx->height, frame->linesize[0]); + else + return unsupported(avctx); + } else if (avctx->codec_tag == MKTAG('A', 'C', 'B', 'M')) { + if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + memset(frame->data[0], 0, avctx->height * frame->linesize[0]); + for (plane = 0; plane < s->bpp; plane++) { + for (y = 0; y < avctx->height && buf < buf_end; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); + buf += s->planesize; + } + } + } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 + memset(frame->data[0], 0, avctx->height * frame->linesize[0]); + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->ham_buf, 0, s->planesize * 8); + for (plane = 0; plane < s->bpp; plane++) { + const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize; + if (start >= buf_end) + break; + decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane); + } + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); + } + } else { + return unsupported(avctx); + } + } else { + return unsupported(avctx); + } + break; + case 0x2: + if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') && avctx->pix_fmt == AV_PIX_FMT_PAL8) { + for (plane = 0; plane < s->bpp; plane++) { + decode_byterun2(s->planebuf, avctx->height, s->planesize, gb); + for (y = 0; y < avctx->height; y++) { + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + decodeplane8(row, s->planebuf + s->planesize * y, s->planesize, plane); + } + } + } else { + return unsupported(avctx); + } + break; + case 0x4: + if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8') && avctx->pix_fmt == AV_PIX_FMT_RGB32) + decode_rgb8(gb, frame->data[0], avctx->width, avctx->height, frame->linesize[0]); + else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N') && avctx->pix_fmt == AV_PIX_FMT_RGB444) + decode_rgbn(gb, frame->data[0], avctx->width, avctx->height, frame->linesize[0]); + else + return unsupported(avctx); + break; + case 0x5: + if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { + if (av_get_bits_per_pixel(desc) == 32) + decode_deep_tvdc32(frame->data[0], buf, buf_size, avctx->width, avctx->height, frame->linesize[0], s->tvdc); + else + return unsupported(avctx); + } else + return unsupported(avctx); + break; + case 0x300: + case 0x301: + decode_short_horizontal_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); + break; + case 0x500: + case 0x501: + decode_byte_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->is_brush, s->bpp, s->video_size); + break; + case 0x700: + case 0x701: + if (s->is_short) + decode_short_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); + else + decode_long_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); + break; + case 0x800: + case 0x801: + if (s->is_short) + decode_short_vertical_delta2(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); + else + decode_long_vertical_delta2(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); + break; + case 0x4a00: + case 0x4a01: + decode_delta_j(s->video[0], buf, buf_end, avctx->width, avctx->height, s->bpp, s->video_size); + break; + case 0x6400: + case 0x6401: + if (s->is_interlaced) + return unsupported(avctx); + decode_delta_d(s->video[0], buf, buf_end, avctx->width, s->is_interlaced, s->bpp, s->video_size); + break; + case 0x6500: + case 0x6501: + if (s->is_interlaced) + return unsupported(avctx); + decode_delta_e(s->video[0], buf, buf_end, avctx->width, s->is_interlaced, s->bpp, s->video_size); + break; + case 0x6c00: + case 0x6c01: + decode_delta_l(s->video[0], buf, buf_end, avctx->width, s->is_short, s->bpp, s->video_size); + break; + default: + return unsupported(avctx); + } + + if (s->compression <= 0xff && (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M'))) { + memcpy(s->video[1], s->video[0], s->video_size); + } + + if (s->compression > 0xff) { if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + buf = s->video[0]; for (y = 0; y < avctx->height; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; memset(row, 0, avctx->width); - for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) { - buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); - decodeplane8(row, s->planebuf, s->planesize, plane); + for (plane = 0; plane < s->bpp; plane++) { + decodeplane8(row, buf, s->planesize, plane); + buf += s->planesize; } } - } else { // AV_PIX_FMT_BGR32 + memcpy(frame->data[1], s->pal, 256 * 4); + } else if (s->ham) { + int i, count = 1 << s->ham; + + buf = s->video[0]; + memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof(uint32_t)); + for (i = 0; i < count; i++) { + s->ham_palbuf[i*2+1] = s->pal[i]; + } + for (i = 0; i < count; i++) { + uint32_t tmp = i << (8 - s->ham); + tmp |= tmp >> s->ham; + s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; + s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; + s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; + s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16; + s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp; + s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8; + } + if (s->masking == MASK_HAS_MASK) { + for (i = 0; i < 8 * (1 << s->ham); i++) + s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000; + } for (y = 0; y < avctx->height; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; - memset(row, 0, avctx->width << 2); - for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) { - buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); - decodeplane32((uint32_t *)row, s->planebuf, s->planesize, plane); + uint8_t *row = &frame->data[0][y * frame->linesize[0]]; + memset(s->ham_buf, 0, s->planesize * 8); + for (plane = 0; plane < s->bpp; plane++) { + decodeplane8(s->ham_buf, buf, s->planesize, plane); + buf += s->planesize; } + decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); } + } else { + return unsupported(avctx); } - } else { - for (y = 0; y < avctx->height; y++) { - uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; - buf += decode_byterun(row, avctx->width, buf, buf_end); + + if (!s->is_brush) { + FFSWAP(uint8_t *, s->video[0], s->video[1]); } } - if ((res = av_frame_ref(data, s->frame)) < 0) - return res; + if (avpkt->flags & AV_PKT_FLAG_KEY) { + frame->key_frame = 1; + frame->pict_type = AV_PICTURE_TYPE_I; + } else { + frame->key_frame = 0; + frame->pict_type = AV_PICTURE_TYPE_P; + } *got_frame = 1; return buf_size; } +#if CONFIG_IFF_ILBM_DECODER AVCodec ff_iff_ilbm_decoder = { - .name = "iff_ilbm", - .long_name = NULL_IF_CONFIG_SMALL("IFF ILBM"), + .name = "iff", + .long_name = NULL_IF_CONFIG_SMALL("IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_IFF_ILBM, .priv_data_size = sizeof(IffContext), .init = decode_init, .close = decode_end, - .decode = decode_frame_ilbm, - .capabilities = AV_CODEC_CAP_DR1, -}; - -AVCodec ff_iff_byterun1_decoder = { - .name = "iff_byterun1", - .long_name = NULL_IF_CONFIG_SMALL("IFF ByteRun1"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_IFF_BYTERUN1, - .priv_data_size = sizeof(IffContext), - .init = decode_init, - .close = decode_end, - .decode = decode_frame_byterun1, + .decode = decode_frame, .capabilities = AV_CODEC_CAP_DR1, }; +#endif |