| /* |
| * 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 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. |
| * |
| * 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder |
| */ |
| |
| #include <stdint.h> |
| |
| #include "libavutil/imgutils.h" |
| |
| #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) \ |
| AV_LE2NE64C(UINT64_C(0x0000000)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1000000)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0010000)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1010000)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0000100)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1000100)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0010100)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1010100)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0000001)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1000001)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0010001)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1010001)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0000101)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1000101)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x0010101)<<32 | v) << plane, \ |
| AV_LE2NE64C(UINT64_C(0x1010101)<<32 | v) << plane |
| |
| #define LUT8(plane) { \ |
| LUT8_PART(plane, 0x0000000), \ |
| LUT8_PART(plane, 0x1000000), \ |
| LUT8_PART(plane, 0x0010000), \ |
| LUT8_PART(plane, 0x1010000), \ |
| LUT8_PART(plane, 0x0000100), \ |
| LUT8_PART(plane, 0x1000100), \ |
| LUT8_PART(plane, 0x0010100), \ |
| LUT8_PART(plane, 0x1010100), \ |
| LUT8_PART(plane, 0x0000001), \ |
| LUT8_PART(plane, 0x1000001), \ |
| LUT8_PART(plane, 0x0010001), \ |
| LUT8_PART(plane, 0x1010001), \ |
| LUT8_PART(plane, 0x0000101), \ |
| LUT8_PART(plane, 0x1000101), \ |
| LUT8_PART(plane, 0x0010101), \ |
| LUT8_PART(plane, 0x1010101), \ |
| } |
| |
| // 8 planes * 8-bit mask |
| static const uint64_t plane8_lut[8][256] = { |
| LUT8(0), LUT8(1), LUT8(2), LUT8(3), |
| LUT8(4), LUT8(5), LUT8(6), LUT8(7), |
| }; |
| |
| #define LUT32(plane) { \ |
| 0, 0, 0, 0, \ |
| 0, 0, 0, 1U << plane, \ |
| 0, 0, 1U << plane, 0, \ |
| 0, 0, 1U << plane, 1U << plane, \ |
| 0, 1U << plane, 0, 0, \ |
| 0, 1U << plane, 0, 1U << plane, \ |
| 0, 1U << plane, 1U << plane, 0, \ |
| 0, 1U << plane, 1U << plane, 1U << plane, \ |
| 1U << plane, 0, 0, 0, \ |
| 1U << plane, 0, 0, 1U << plane, \ |
| 1U << plane, 0, 1U << plane, 0, \ |
| 1U << plane, 0, 1U << plane, 1U << plane, \ |
| 1U << plane, 1U << plane, 0, 0, \ |
| 1U << plane, 1U << plane, 0, 1U << plane, \ |
| 1U << plane, 1U << plane, 1U << plane, 0, \ |
| 1U << plane, 1U << plane, 1U << plane, 1U << plane, \ |
| } |
| |
| // 32 planes * 4-bit mask * 4 lookup tables each |
| static const uint32_t plane32_lut[32][16*4] = { |
| LUT32( 0), LUT32( 1), LUT32( 2), LUT32( 3), |
| LUT32( 4), LUT32( 5), LUT32( 6), LUT32( 7), |
| LUT32( 8), LUT32( 9), LUT32(10), LUT32(11), |
| LUT32(12), LUT32(13), LUT32(14), LUT32(15), |
| LUT32(16), LUT32(17), LUT32(18), LUT32(19), |
| LUT32(20), LUT32(21), LUT32(22), LUT32(23), |
| LUT32(24), LUT32(25), LUT32(26), LUT32(27), |
| LUT32(28), LUT32(29), LUT32(30), LUT32(31), |
| }; |
| |
| // Gray to RGB, required for palette table of grayscale images with bpp < 8 |
| static av_always_inline uint32_t gray2rgb(const uint32_t x) { |
| return x << 16 | x << 8 | x; |
| } |
| |
| /** |
| * Convert CMAP buffer (stored in extradata) to lavc palette format |
| */ |
| 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, "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(palette_size / 3, count); |
| if (count) { |
| for (i = 0; i < count; i++) |
| 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) { |
| if ((1 << avctx->bits_per_coded_sample) < count) { |
| avpriv_request_sample(avctx, "overlapping mask"); |
| return AVERROR_PATCHWELCOME; |
| } |
| 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->ham) { |
| if (s->bpp > 8) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham); |
| return AVERROR_INVALIDDATA; |
| } else if (s->ham != (s->bpp > 6 ? 6 : 4)) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u, BPP: %u\n", s->ham, s->bpp); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| |
| 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; |
| } |
| if (s->video_size && s->planesize * s->bpp * avctx->height > s->video_size) |
| 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); |
| int extra_space = 1; |
| |
| if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ') && s->ham == 4) |
| extra_space = 4; |
| |
| 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(extra_space * (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_freep(&s->planebuf); |
| av_freep(&s->ham_buf); |
| av_freep(&s->ham_palbuf); |
| av_freep(&s->mask_buf); |
| av_freep(&s->mask_palbuf); |
| av_freep(&s->video[0]); |
| av_freep(&s->video[1]); |
| av_freep(&s->pal); |
| return 0; |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| IffContext *s = avctx->priv_data; |
| int err; |
| |
| if (avctx->bits_per_coded_sample <= 8) { |
| 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) { |
| 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; |
| } |
| |
| 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 * avctx->height + AV_INPUT_BUFFER_PADDING_SIZE); |
| if (!s->planebuf) |
| 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; |
| if (!s->video_size) |
| return AVERROR_INVALIDDATA; |
| 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; |
| } |
| |
| /** |
| * Decode interleaved plane buffer up to 8bpp |
| * @param dst Destination buffer |
| * @param buf Source buffer |
| * @param buf_size |
| * @param plane plane number to decode as |
| */ |
| static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane) |
| { |
| const uint64_t *lut; |
| if (plane >= 8) { |
| av_log(NULL, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n"); |
| return; |
| } |
| lut = plane8_lut[plane]; |
| do { |
| uint64_t v = AV_RN64A(dst) | lut[*buf++]; |
| AV_WN64A(dst, v); |
| dst += 8; |
| } while (--buf_size); |
| } |
| |
| /** |
| * Decode interleaved plane buffer up to 24bpp |
| * @param dst Destination buffer |
| * @param buf Source buffer |
| * @param buf_size |
| * @param plane plane number to decode as |
| */ |
| static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int plane) |
| { |
| const uint32_t *lut = plane32_lut[plane]; |
| do { |
| unsigned mask = (*buf >> 2) & ~3; |
| dst[0] |= lut[mask++]; |
| dst[1] |= lut[mask++]; |
| dst[2] |= lut[mask++]; |
| dst[3] |= lut[mask]; |
| mask = (*buf++ << 2) & 0x3F; |
| dst[4] |= lut[mask++]; |
| dst[5] |= lut[mask++]; |
| dst[6] |= lut[mask++]; |
| dst[7] |= lut[mask]; |
| dst += 8; |
| } 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. |
| * |
| * @param dst the destination buffer where to store decompressed bitstream |
| * @param dst_size the destination plane size in bytes |
| * @param buf the source byterun1 compressed bitstream |
| * @param buf_end the EOF of source byterun1 compressed bitstream |
| * @return number of consumed bytes in byterun1 compressed bitstream |
| */ |
| static int decode_byterun(uint8_t *dst, int dst_size, |
| GetByteContext *gb) |
| { |
| unsigned x; |
| for (x = 0; x < dst_size && bytestream2_get_bytes_left(gb) > 0;) { |
| unsigned length; |
| const int8_t value = bytestream2_get_byte(gb); |
| if (value >= 0) { |
| 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 = FFMIN(-value + 1, dst_size - x); |
| memset(dst + x, bytestream2_get_byte(gb), length); |
| } else { // noop |
| continue; |
| } |
| x += length; |
| } |
| 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_byterun2(uint8_t *dst, int height, int line_size, |
| GetByteContext *gb) |
| { |
| GetByteContext cmds; |
| unsigned count; |
| int i, y_pos = 0, x_pos = 0; |
| |
| if (bytestream2_get_be32(gb) != MKBETAG('V', 'D', 'A', 'T')) |
| return 0; |
| |
| 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; |
| } |
| } |
| } |
| } |
| |
| 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_end - src >= 5) { |
| 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 - x); |
| if (src_end - src < length * 4) |
| return; |
| 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 { |
| 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++; |
| } |
| } |
| if (x >= width) { |
| plane++; |
| if (plane >= 4) { |
| y++; |
| if (y >= height) |
| return; |
| plane = 0; |
| } |
| x = 0; |
| pixel = 0; |
| i = (i + 1) & ~1; |
| } |
| } |
| } |
| |
| 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; |
| |
| 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); |
| 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 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); |
| } |
| |
| if (ofsdst + (opcode - 1LL) * dstpitch > bytestream2_size_p(&pb)) |
| return; |
| |
| 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); |
| } |
| |
| if (ofsdst + (opcode - 1LL) * dstpitch > bytestream2_size_p(&pb)) |
| return; |
| |
| 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); |
| if (entries * 8LL > bytestream2_get_bytes_left(&gb)) |
| return; |
| |
| 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); |
| if (opcode && 4 + (opcode - 1LL) * pitch > bytestream2_get_bytes_left_p(&pb)) |
| continue; |
| while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { |
| bytestream2_put_be32(&pb, x); |
| bytestream2_skip_p(&pb, pitch - 4); |
| opcode--; |
| } |
| } else { |
| 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_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 - (s->masking == MASK_HAS_MASK) && |
| 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 (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 = &frame->data[0][y * frame->linesize[0]]; |
| memset(row, 0, avctx->width); |
| for (plane = 0; plane < s->bpp; plane++) { |
| decodeplane8(row, buf, s->planesize, plane); |
| buf += s->planesize; |
| } |
| } |
| 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 = &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); |
| } |
| |
| if (!s->is_brush) { |
| FFSWAP(uint8_t *, s->video[0], s->video[1]); |
| } |
| } |
| |
| 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", |
| .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, |
| .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
| .capabilities = AV_CODEC_CAP_DR1, |
| }; |
| #endif |
