| 1 | /* |
| 2 | * IFF ACBM/DEEP/ILBM/PBM bitmap decoder |
| 3 | * Copyright (c) 2010 Peter Ross <pross@xvid.org> |
| 4 | * Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com> |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * @file |
| 25 | * IFF ACBM/DEEP/ILBM/PBM bitmap decoder |
| 26 | */ |
| 27 | |
| 28 | #include <stdint.h> |
| 29 | |
| 30 | #include "libavutil/imgutils.h" |
| 31 | #include "bytestream.h" |
| 32 | #include "avcodec.h" |
| 33 | #include "get_bits.h" |
| 34 | #include "internal.h" |
| 35 | |
| 36 | // TODO: masking bits |
| 37 | typedef enum { |
| 38 | MASK_NONE, |
| 39 | MASK_HAS_MASK, |
| 40 | MASK_HAS_TRANSPARENT_COLOR, |
| 41 | MASK_LASSO |
| 42 | } mask_type; |
| 43 | |
| 44 | typedef struct { |
| 45 | AVFrame *frame; |
| 46 | int planesize; |
| 47 | uint8_t * planebuf; |
| 48 | uint8_t * ham_buf; ///< temporary buffer for planar to chunky conversation |
| 49 | uint32_t *ham_palbuf; ///< HAM decode table |
| 50 | uint32_t *mask_buf; ///< temporary buffer for palette indices |
| 51 | uint32_t *mask_palbuf; ///< masking palette table |
| 52 | unsigned compression; ///< delta compression method used |
| 53 | unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM) |
| 54 | unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise) |
| 55 | unsigned flags; ///< 1 for EHB, 0 is no extra half darkening |
| 56 | unsigned transparency; ///< TODO: transparency color index in palette |
| 57 | unsigned masking; ///< TODO: masking method used |
| 58 | int init; // 1 if buffer and palette data already initialized, 0 otherwise |
| 59 | int16_t tvdc[16]; ///< TVDC lookup table |
| 60 | } IffContext; |
| 61 | |
| 62 | #define LUT8_PART(plane, v) \ |
| 63 | AV_LE2NE64C(UINT64_C(0x0000000)<<32 | v) << plane, \ |
| 64 | AV_LE2NE64C(UINT64_C(0x1000000)<<32 | v) << plane, \ |
| 65 | AV_LE2NE64C(UINT64_C(0x0010000)<<32 | v) << plane, \ |
| 66 | AV_LE2NE64C(UINT64_C(0x1010000)<<32 | v) << plane, \ |
| 67 | AV_LE2NE64C(UINT64_C(0x0000100)<<32 | v) << plane, \ |
| 68 | AV_LE2NE64C(UINT64_C(0x1000100)<<32 | v) << plane, \ |
| 69 | AV_LE2NE64C(UINT64_C(0x0010100)<<32 | v) << plane, \ |
| 70 | AV_LE2NE64C(UINT64_C(0x1010100)<<32 | v) << plane, \ |
| 71 | AV_LE2NE64C(UINT64_C(0x0000001)<<32 | v) << plane, \ |
| 72 | AV_LE2NE64C(UINT64_C(0x1000001)<<32 | v) << plane, \ |
| 73 | AV_LE2NE64C(UINT64_C(0x0010001)<<32 | v) << plane, \ |
| 74 | AV_LE2NE64C(UINT64_C(0x1010001)<<32 | v) << plane, \ |
| 75 | AV_LE2NE64C(UINT64_C(0x0000101)<<32 | v) << plane, \ |
| 76 | AV_LE2NE64C(UINT64_C(0x1000101)<<32 | v) << plane, \ |
| 77 | AV_LE2NE64C(UINT64_C(0x0010101)<<32 | v) << plane, \ |
| 78 | AV_LE2NE64C(UINT64_C(0x1010101)<<32 | v) << plane |
| 79 | |
| 80 | #define LUT8(plane) { \ |
| 81 | LUT8_PART(plane, 0x0000000), \ |
| 82 | LUT8_PART(plane, 0x1000000), \ |
| 83 | LUT8_PART(plane, 0x0010000), \ |
| 84 | LUT8_PART(plane, 0x1010000), \ |
| 85 | LUT8_PART(plane, 0x0000100), \ |
| 86 | LUT8_PART(plane, 0x1000100), \ |
| 87 | LUT8_PART(plane, 0x0010100), \ |
| 88 | LUT8_PART(plane, 0x1010100), \ |
| 89 | LUT8_PART(plane, 0x0000001), \ |
| 90 | LUT8_PART(plane, 0x1000001), \ |
| 91 | LUT8_PART(plane, 0x0010001), \ |
| 92 | LUT8_PART(plane, 0x1010001), \ |
| 93 | LUT8_PART(plane, 0x0000101), \ |
| 94 | LUT8_PART(plane, 0x1000101), \ |
| 95 | LUT8_PART(plane, 0x0010101), \ |
| 96 | LUT8_PART(plane, 0x1010101), \ |
| 97 | } |
| 98 | |
| 99 | // 8 planes * 8-bit mask |
| 100 | static const uint64_t plane8_lut[8][256] = { |
| 101 | LUT8(0), LUT8(1), LUT8(2), LUT8(3), |
| 102 | LUT8(4), LUT8(5), LUT8(6), LUT8(7), |
| 103 | }; |
| 104 | |
| 105 | #define LUT32(plane) { \ |
| 106 | 0, 0, 0, 0, \ |
| 107 | 0, 0, 0, 1 << plane, \ |
| 108 | 0, 0, 1 << plane, 0, \ |
| 109 | 0, 0, 1 << plane, 1 << plane, \ |
| 110 | 0, 1 << plane, 0, 0, \ |
| 111 | 0, 1 << plane, 0, 1 << plane, \ |
| 112 | 0, 1 << plane, 1 << plane, 0, \ |
| 113 | 0, 1 << plane, 1 << plane, 1 << plane, \ |
| 114 | 1 << plane, 0, 0, 0, \ |
| 115 | 1 << plane, 0, 0, 1 << plane, \ |
| 116 | 1 << plane, 0, 1 << plane, 0, \ |
| 117 | 1 << plane, 0, 1 << plane, 1 << plane, \ |
| 118 | 1 << plane, 1 << plane, 0, 0, \ |
| 119 | 1 << plane, 1 << plane, 0, 1 << plane, \ |
| 120 | 1 << plane, 1 << plane, 1 << plane, 0, \ |
| 121 | 1 << plane, 1 << plane, 1 << plane, 1 << plane, \ |
| 122 | } |
| 123 | |
| 124 | // 32 planes * 4-bit mask * 4 lookup tables each |
| 125 | static const uint32_t plane32_lut[32][16*4] = { |
| 126 | LUT32( 0), LUT32( 1), LUT32( 2), LUT32( 3), |
| 127 | LUT32( 4), LUT32( 5), LUT32( 6), LUT32( 7), |
| 128 | LUT32( 8), LUT32( 9), LUT32(10), LUT32(11), |
| 129 | LUT32(12), LUT32(13), LUT32(14), LUT32(15), |
| 130 | LUT32(16), LUT32(17), LUT32(18), LUT32(19), |
| 131 | LUT32(20), LUT32(21), LUT32(22), LUT32(23), |
| 132 | LUT32(24), LUT32(25), LUT32(26), LUT32(27), |
| 133 | LUT32(28), LUT32(29), LUT32(30), LUT32(31), |
| 134 | }; |
| 135 | |
| 136 | // Gray to RGB, required for palette table of grayscale images with bpp < 8 |
| 137 | static av_always_inline uint32_t gray2rgb(const uint32_t x) { |
| 138 | return x << 16 | x << 8 | x; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Convert CMAP buffer (stored in extradata) to lavc palette format |
| 143 | */ |
| 144 | static int cmap_read_palette(AVCodecContext *avctx, uint32_t *pal) |
| 145 | { |
| 146 | IffContext *s = avctx->priv_data; |
| 147 | int count, i; |
| 148 | const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); |
| 149 | int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); |
| 150 | |
| 151 | if (avctx->bits_per_coded_sample > 8) { |
| 152 | av_log(avctx, AV_LOG_ERROR, "bits_per_coded_sample > 8 not supported\n"); |
| 153 | return AVERROR_INVALIDDATA; |
| 154 | } |
| 155 | |
| 156 | count = 1 << avctx->bits_per_coded_sample; |
| 157 | // If extradata is smaller than actually needed, fill the remaining with black. |
| 158 | count = FFMIN(palette_size / 3, count); |
| 159 | if (count) { |
| 160 | for (i = 0; i < count; i++) |
| 161 | pal[i] = 0xFF000000 | AV_RB24(palette + i*3); |
| 162 | if (s->flags && count >= 32) { // EHB |
| 163 | for (i = 0; i < 32; i++) |
| 164 | pal[i + 32] = 0xFF000000 | (AV_RB24(palette + i*3) & 0xFEFEFE) >> 1; |
| 165 | count = FFMAX(count, 64); |
| 166 | } |
| 167 | } else { // Create gray-scale color palette for bps < 8 |
| 168 | count = 1 << avctx->bits_per_coded_sample; |
| 169 | |
| 170 | for (i = 0; i < count; i++) |
| 171 | pal[i] = 0xFF000000 | gray2rgb((i * 255) >> avctx->bits_per_coded_sample); |
| 172 | } |
| 173 | if (s->masking == MASK_HAS_MASK) { |
| 174 | memcpy(pal + (1 << avctx->bits_per_coded_sample), pal, count * 4); |
| 175 | for (i = 0; i < count; i++) |
| 176 | pal[i] &= 0xFFFFFF; |
| 177 | } else if (s->masking == MASK_HAS_TRANSPARENT_COLOR && |
| 178 | s->transparency < 1 << avctx->bits_per_coded_sample) |
| 179 | pal[s->transparency] &= 0xFFFFFF; |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Extracts the IFF extra context and updates internal |
| 185 | * decoder structures. |
| 186 | * |
| 187 | * @param avctx the AVCodecContext where to extract extra context to |
| 188 | * @param avpkt the AVPacket to extract extra context from or NULL to use avctx |
| 189 | * @return >= 0 in case of success, a negative error code otherwise |
| 190 | */ |
| 191 | static int extract_header(AVCodecContext *const avctx, |
| 192 | const AVPacket *const avpkt) { |
| 193 | const uint8_t *buf; |
| 194 | unsigned buf_size; |
| 195 | IffContext *s = avctx->priv_data; |
| 196 | int i, palette_size; |
| 197 | |
| 198 | if (avctx->extradata_size < 2) { |
| 199 | av_log(avctx, AV_LOG_ERROR, "not enough extradata\n"); |
| 200 | return AVERROR_INVALIDDATA; |
| 201 | } |
| 202 | palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); |
| 203 | |
| 204 | if (avpkt) { |
| 205 | int image_size; |
| 206 | if (avpkt->size < 2) |
| 207 | return AVERROR_INVALIDDATA; |
| 208 | image_size = avpkt->size - AV_RB16(avpkt->data); |
| 209 | buf = avpkt->data; |
| 210 | buf_size = bytestream_get_be16(&buf); |
| 211 | if (buf_size <= 1 || image_size <= 1) { |
| 212 | av_log(avctx, AV_LOG_ERROR, |
| 213 | "Invalid image size received: %u -> image data offset: %d\n", |
| 214 | buf_size, image_size); |
| 215 | return AVERROR_INVALIDDATA; |
| 216 | } |
| 217 | } else { |
| 218 | buf = avctx->extradata; |
| 219 | buf_size = bytestream_get_be16(&buf); |
| 220 | if (buf_size <= 1 || palette_size < 0) { |
| 221 | av_log(avctx, AV_LOG_ERROR, |
| 222 | "Invalid palette size received: %u -> palette data offset: %d\n", |
| 223 | buf_size, palette_size); |
| 224 | return AVERROR_INVALIDDATA; |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | if (buf_size >= 41) { |
| 229 | s->compression = bytestream_get_byte(&buf); |
| 230 | s->bpp = bytestream_get_byte(&buf); |
| 231 | s->ham = bytestream_get_byte(&buf); |
| 232 | s->flags = bytestream_get_byte(&buf); |
| 233 | s->transparency = bytestream_get_be16(&buf); |
| 234 | s->masking = bytestream_get_byte(&buf); |
| 235 | for (i = 0; i < 16; i++) |
| 236 | s->tvdc[i] = bytestream_get_be16(&buf); |
| 237 | |
| 238 | if (s->masking == MASK_HAS_MASK) { |
| 239 | if (s->bpp >= 8 && !s->ham) { |
| 240 | avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| 241 | av_freep(&s->mask_buf); |
| 242 | av_freep(&s->mask_palbuf); |
| 243 | s->mask_buf = av_malloc((s->planesize * 32) + FF_INPUT_BUFFER_PADDING_SIZE); |
| 244 | if (!s->mask_buf) |
| 245 | return AVERROR(ENOMEM); |
| 246 | if (s->bpp > 16) { |
| 247 | av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp); |
| 248 | av_freep(&s->mask_buf); |
| 249 | return AVERROR(ENOMEM); |
| 250 | } |
| 251 | s->mask_palbuf = av_malloc((2 << s->bpp) * sizeof(uint32_t) + FF_INPUT_BUFFER_PADDING_SIZE); |
| 252 | if (!s->mask_palbuf) { |
| 253 | av_freep(&s->mask_buf); |
| 254 | return AVERROR(ENOMEM); |
| 255 | } |
| 256 | } |
| 257 | s->bpp++; |
| 258 | } else if (s->masking != MASK_NONE && s->masking != MASK_HAS_TRANSPARENT_COLOR) { |
| 259 | av_log(avctx, AV_LOG_ERROR, "Masking not supported\n"); |
| 260 | return AVERROR_PATCHWELCOME; |
| 261 | } |
| 262 | if (!s->bpp || s->bpp > 32) { |
| 263 | av_log(avctx, AV_LOG_ERROR, "Invalid number of bitplanes: %u\n", s->bpp); |
| 264 | return AVERROR_INVALIDDATA; |
| 265 | } else if (s->ham >= 8) { |
| 266 | av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham); |
| 267 | return AVERROR_INVALIDDATA; |
| 268 | } |
| 269 | |
| 270 | av_freep(&s->ham_buf); |
| 271 | av_freep(&s->ham_palbuf); |
| 272 | |
| 273 | if (s->ham) { |
| 274 | int i, count = FFMIN(palette_size / 3, 1 << s->ham); |
| 275 | int ham_count; |
| 276 | const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); |
| 277 | |
| 278 | s->ham_buf = av_malloc((s->planesize * 8) + FF_INPUT_BUFFER_PADDING_SIZE); |
| 279 | if (!s->ham_buf) |
| 280 | return AVERROR(ENOMEM); |
| 281 | |
| 282 | ham_count = 8 * (1 << s->ham); |
| 283 | s->ham_palbuf = av_malloc((ham_count << !!(s->masking == MASK_HAS_MASK)) * sizeof (uint32_t) + FF_INPUT_BUFFER_PADDING_SIZE); |
| 284 | if (!s->ham_palbuf) { |
| 285 | av_freep(&s->ham_buf); |
| 286 | return AVERROR(ENOMEM); |
| 287 | } |
| 288 | |
| 289 | if (count) { // HAM with color palette attached |
| 290 | // prefill with black and palette and set HAM take direct value mask to zero |
| 291 | memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof (uint32_t)); |
| 292 | for (i=0; i < count; i++) { |
| 293 | s->ham_palbuf[i*2+1] = 0xFF000000 | AV_RL24(palette + i*3); |
| 294 | } |
| 295 | count = 1 << s->ham; |
| 296 | } else { // HAM with grayscale color palette |
| 297 | count = 1 << s->ham; |
| 298 | for (i=0; i < count; i++) { |
| 299 | s->ham_palbuf[i*2] = 0xFF000000; // take direct color value from palette |
| 300 | s->ham_palbuf[i*2+1] = 0xFF000000 | av_le2ne32(gray2rgb((i * 255) >> s->ham)); |
| 301 | } |
| 302 | } |
| 303 | for (i=0; i < count; i++) { |
| 304 | uint32_t tmp = i << (8 - s->ham); |
| 305 | tmp |= tmp >> s->ham; |
| 306 | s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; // just modify blue color component |
| 307 | s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; // just modify red color component |
| 308 | s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; // just modify green color component |
| 309 | s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16; |
| 310 | s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp; |
| 311 | s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8; |
| 312 | } |
| 313 | if (s->masking == MASK_HAS_MASK) { |
| 314 | for (i = 0; i < ham_count; i++) |
| 315 | s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | static av_cold int decode_end(AVCodecContext *avctx) |
| 324 | { |
| 325 | IffContext *s = avctx->priv_data; |
| 326 | av_frame_free(&s->frame); |
| 327 | av_freep(&s->planebuf); |
| 328 | av_freep(&s->ham_buf); |
| 329 | av_freep(&s->ham_palbuf); |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static av_cold int decode_init(AVCodecContext *avctx) |
| 334 | { |
| 335 | IffContext *s = avctx->priv_data; |
| 336 | int err; |
| 337 | |
| 338 | if (avctx->bits_per_coded_sample <= 8) { |
| 339 | int palette_size; |
| 340 | |
| 341 | if (avctx->extradata_size >= 2) |
| 342 | palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); |
| 343 | else |
| 344 | palette_size = 0; |
| 345 | avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) || |
| 346 | (avctx->extradata_size >= 2 && palette_size) ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8; |
| 347 | } else if (avctx->bits_per_coded_sample <= 32) { |
| 348 | if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8')) { |
| 349 | avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| 350 | } else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N')) { |
| 351 | avctx->pix_fmt = AV_PIX_FMT_RGB444; |
| 352 | } else if (avctx->codec_tag != MKTAG('D', 'E', 'E', 'P')) { |
| 353 | if (avctx->bits_per_coded_sample == 24) { |
| 354 | avctx->pix_fmt = AV_PIX_FMT_0BGR32; |
| 355 | } else if (avctx->bits_per_coded_sample == 32) { |
| 356 | avctx->pix_fmt = AV_PIX_FMT_BGR32; |
| 357 | } else { |
| 358 | avpriv_request_sample(avctx, "unknown bits_per_coded_sample"); |
| 359 | return AVERROR_PATCHWELCOME; |
| 360 | } |
| 361 | } |
| 362 | } else { |
| 363 | return AVERROR_INVALIDDATA; |
| 364 | } |
| 365 | |
| 366 | if ((err = av_image_check_size(avctx->width, avctx->height, 0, avctx))) |
| 367 | return err; |
| 368 | s->planesize = FFALIGN(avctx->width, 16) >> 3; // Align plane size in bits to word-boundary |
| 369 | s->planebuf = av_malloc(s->planesize + FF_INPUT_BUFFER_PADDING_SIZE); |
| 370 | if (!s->planebuf) |
| 371 | return AVERROR(ENOMEM); |
| 372 | |
| 373 | s->bpp = avctx->bits_per_coded_sample; |
| 374 | s->frame = av_frame_alloc(); |
| 375 | if (!s->frame) { |
| 376 | decode_end(avctx); |
| 377 | return AVERROR(ENOMEM); |
| 378 | } |
| 379 | |
| 380 | if ((err = extract_header(avctx, NULL)) < 0) |
| 381 | return err; |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Decode interleaved plane buffer up to 8bpp |
| 388 | * @param dst Destination buffer |
| 389 | * @param buf Source buffer |
| 390 | * @param buf_size |
| 391 | * @param plane plane number to decode as |
| 392 | */ |
| 393 | static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane) |
| 394 | { |
| 395 | const uint64_t *lut = plane8_lut[plane]; |
| 396 | if (plane >= 8) { |
| 397 | av_log(NULL, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n"); |
| 398 | return; |
| 399 | } |
| 400 | do { |
| 401 | uint64_t v = AV_RN64A(dst) | lut[*buf++]; |
| 402 | AV_WN64A(dst, v); |
| 403 | dst += 8; |
| 404 | } while (--buf_size); |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * Decode interleaved plane buffer up to 24bpp |
| 409 | * @param dst Destination buffer |
| 410 | * @param buf Source buffer |
| 411 | * @param buf_size |
| 412 | * @param plane plane number to decode as |
| 413 | */ |
| 414 | static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int plane) |
| 415 | { |
| 416 | const uint32_t *lut = plane32_lut[plane]; |
| 417 | do { |
| 418 | unsigned mask = (*buf >> 2) & ~3; |
| 419 | dst[0] |= lut[mask++]; |
| 420 | dst[1] |= lut[mask++]; |
| 421 | dst[2] |= lut[mask++]; |
| 422 | dst[3] |= lut[mask]; |
| 423 | mask = (*buf++ << 2) & 0x3F; |
| 424 | dst[4] |= lut[mask++]; |
| 425 | dst[5] |= lut[mask++]; |
| 426 | dst[6] |= lut[mask++]; |
| 427 | dst[7] |= lut[mask]; |
| 428 | dst += 8; |
| 429 | } while (--buf_size); |
| 430 | } |
| 431 | |
| 432 | #define DECODE_HAM_PLANE32(x) \ |
| 433 | first = buf[x] << 1; \ |
| 434 | second = buf[(x)+1] << 1; \ |
| 435 | delta &= pal[first++]; \ |
| 436 | delta |= pal[first]; \ |
| 437 | dst[x] = delta; \ |
| 438 | delta &= pal[second++]; \ |
| 439 | delta |= pal[second]; \ |
| 440 | dst[(x)+1] = delta |
| 441 | |
| 442 | /** |
| 443 | * Converts one line of HAM6/8-encoded chunky buffer to 24bpp. |
| 444 | * |
| 445 | * @param dst the destination 24bpp buffer |
| 446 | * @param buf the source 8bpp chunky buffer |
| 447 | * @param pal the HAM decode table |
| 448 | * @param buf_size the plane size in bytes |
| 449 | */ |
| 450 | static void decode_ham_plane32(uint32_t *dst, const uint8_t *buf, |
| 451 | const uint32_t *const pal, unsigned buf_size) |
| 452 | { |
| 453 | uint32_t delta = pal[1]; /* first palette entry */ |
| 454 | do { |
| 455 | uint32_t first, second; |
| 456 | DECODE_HAM_PLANE32(0); |
| 457 | DECODE_HAM_PLANE32(2); |
| 458 | DECODE_HAM_PLANE32(4); |
| 459 | DECODE_HAM_PLANE32(6); |
| 460 | buf += 8; |
| 461 | dst += 8; |
| 462 | } while (--buf_size); |
| 463 | } |
| 464 | |
| 465 | static void lookup_pal_indicies(uint32_t *dst, const uint32_t *buf, |
| 466 | const uint32_t *const pal, unsigned width) |
| 467 | { |
| 468 | do { |
| 469 | *dst++ = pal[*buf++]; |
| 470 | } while (--width); |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * Decode one complete byterun1 encoded line. |
| 475 | * |
| 476 | * @param dst the destination buffer where to store decompressed bitstream |
| 477 | * @param dst_size the destination plane size in bytes |
| 478 | * @param buf the source byterun1 compressed bitstream |
| 479 | * @param buf_end the EOF of source byterun1 compressed bitstream |
| 480 | * @return number of consumed bytes in byterun1 compressed bitstream |
| 481 | */ |
| 482 | static int decode_byterun(uint8_t *dst, int dst_size, |
| 483 | const uint8_t *buf, const uint8_t *const buf_end) |
| 484 | { |
| 485 | const uint8_t *const buf_start = buf; |
| 486 | unsigned x; |
| 487 | for (x = 0; x < dst_size && buf < buf_end;) { |
| 488 | unsigned length; |
| 489 | const int8_t value = *buf++; |
| 490 | if (value >= 0) { |
| 491 | length = FFMIN3(value + 1, dst_size - x, buf_end - buf); |
| 492 | memcpy(dst + x, buf, length); |
| 493 | buf += length; |
| 494 | } else if (value > -128) { |
| 495 | length = FFMIN(-value + 1, dst_size - x); |
| 496 | memset(dst + x, *buf++, length); |
| 497 | } else { // noop |
| 498 | continue; |
| 499 | } |
| 500 | x += length; |
| 501 | } |
| 502 | if (x < dst_size) { |
| 503 | av_log(NULL, AV_LOG_WARNING, "decode_byterun ended before plane size\n"); |
| 504 | memset(dst+x, 0, dst_size - x); |
| 505 | } |
| 506 | return buf - buf_start; |
| 507 | } |
| 508 | |
| 509 | #define DECODE_RGBX_COMMON(type) \ |
| 510 | if (!length) { \ |
| 511 | length = bytestream2_get_byte(gb); \ |
| 512 | if (!length) { \ |
| 513 | length = bytestream2_get_be16(gb); \ |
| 514 | if (!length) \ |
| 515 | return; \ |
| 516 | } \ |
| 517 | } \ |
| 518 | for (i = 0; i < length; i++) { \ |
| 519 | *(type *)(dst + y*linesize + x * sizeof(type)) = pixel; \ |
| 520 | x += 1; \ |
| 521 | if (x >= width) { \ |
| 522 | y += 1; \ |
| 523 | if (y >= height) \ |
| 524 | return; \ |
| 525 | x = 0; \ |
| 526 | } \ |
| 527 | } |
| 528 | |
| 529 | /** |
| 530 | * Decode RGB8 buffer |
| 531 | * @param[out] dst Destination buffer |
| 532 | * @param width Width of destination buffer (pixels) |
| 533 | * @param height Height of destination buffer (pixels) |
| 534 | * @param linesize Line size of destination buffer (bytes) |
| 535 | */ |
| 536 | static void decode_rgb8(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) |
| 537 | { |
| 538 | int x = 0, y = 0, i, length; |
| 539 | while (bytestream2_get_bytes_left(gb) >= 4) { |
| 540 | uint32_t pixel = 0xFF000000 | bytestream2_get_be24(gb); |
| 541 | length = bytestream2_get_byte(gb) & 0x7F; |
| 542 | DECODE_RGBX_COMMON(uint32_t) |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Decode RGBN buffer |
| 548 | * @param[out] dst Destination buffer |
| 549 | * @param width Width of destination buffer (pixels) |
| 550 | * @param height Height of destination buffer (pixels) |
| 551 | * @param linesize Line size of destination buffer (bytes) |
| 552 | */ |
| 553 | static void decode_rgbn(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) |
| 554 | { |
| 555 | int x = 0, y = 0, i, length; |
| 556 | while (bytestream2_get_bytes_left(gb) >= 2) { |
| 557 | uint32_t pixel = bytestream2_get_be16u(gb); |
| 558 | length = pixel & 0x7; |
| 559 | pixel >>= 4; |
| 560 | DECODE_RGBX_COMMON(uint16_t) |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | /** |
| 565 | * Decode DEEP RLE 32-bit buffer |
| 566 | * @param[out] dst Destination buffer |
| 567 | * @param[in] src Source buffer |
| 568 | * @param src_size Source buffer size (bytes) |
| 569 | * @param width Width of destination buffer (pixels) |
| 570 | * @param height Height of destination buffer (pixels) |
| 571 | * @param linesize Line size of destination buffer (bytes) |
| 572 | */ |
| 573 | static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize) |
| 574 | { |
| 575 | const uint8_t *src_end = src + src_size; |
| 576 | int x = 0, y = 0, i; |
| 577 | while (src + 5 <= src_end) { |
| 578 | int opcode; |
| 579 | opcode = *(int8_t *)src++; |
| 580 | if (opcode >= 0) { |
| 581 | int size = opcode + 1; |
| 582 | for (i = 0; i < size; i++) { |
| 583 | int length = FFMIN(size - i, width); |
| 584 | memcpy(dst + y*linesize + x * 4, src, length * 4); |
| 585 | src += length * 4; |
| 586 | x += length; |
| 587 | i += length; |
| 588 | if (x >= width) { |
| 589 | x = 0; |
| 590 | y += 1; |
| 591 | if (y >= height) |
| 592 | return; |
| 593 | } |
| 594 | } |
| 595 | } else { |
| 596 | int size = -opcode + 1; |
| 597 | uint32_t pixel = AV_RN32(src); |
| 598 | for (i = 0; i < size; i++) { |
| 599 | *(uint32_t *)(dst + y*linesize + x * 4) = pixel; |
| 600 | x += 1; |
| 601 | if (x >= width) { |
| 602 | x = 0; |
| 603 | y += 1; |
| 604 | if (y >= height) |
| 605 | return; |
| 606 | } |
| 607 | } |
| 608 | src += 4; |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Decode DEEP TVDC 32-bit buffer |
| 615 | * @param[out] dst Destination buffer |
| 616 | * @param[in] src Source buffer |
| 617 | * @param src_size Source buffer size (bytes) |
| 618 | * @param width Width of destination buffer (pixels) |
| 619 | * @param height Height of destination buffer (pixels) |
| 620 | * @param linesize Line size of destination buffer (bytes) |
| 621 | * @param[int] tvdc TVDC lookup table |
| 622 | */ |
| 623 | 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) |
| 624 | { |
| 625 | int x = 0, y = 0, plane = 0; |
| 626 | int8_t pixel = 0; |
| 627 | int i, j; |
| 628 | |
| 629 | for (i = 0; i < src_size * 2;) { |
| 630 | #define GETNIBBLE ((i & 1) ? (src[i>>1] & 0xF) : (src[i>>1] >> 4)) |
| 631 | int d = tvdc[GETNIBBLE]; |
| 632 | i++; |
| 633 | if (d) { |
| 634 | pixel += d; |
| 635 | dst[y * linesize + x*4 + plane] = pixel; |
| 636 | x++; |
| 637 | } else { |
| 638 | if (i >= src_size * 2) |
| 639 | return; |
| 640 | d = GETNIBBLE + 1; |
| 641 | i++; |
| 642 | d = FFMIN(d, width - x); |
| 643 | for (j = 0; j < d; j++) { |
| 644 | dst[y * linesize + x*4 + plane] = pixel; |
| 645 | x++; |
| 646 | } |
| 647 | } |
| 648 | if (x >= width) { |
| 649 | plane++; |
| 650 | if (plane >= 4) { |
| 651 | y++; |
| 652 | if (y >= height) |
| 653 | return; |
| 654 | plane = 0; |
| 655 | } |
| 656 | x = 0; |
| 657 | pixel = 0; |
| 658 | i = (i + 1) & ~1; |
| 659 | } |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | static int unsupported(AVCodecContext *avctx) |
| 664 | { |
| 665 | IffContext *s = avctx->priv_data; |
| 666 | avpriv_request_sample(avctx, "bitmap (compression %i, bpp %i, ham %i)", s->compression, s->bpp, s->ham); |
| 667 | return AVERROR_INVALIDDATA; |
| 668 | } |
| 669 | |
| 670 | static int decode_frame(AVCodecContext *avctx, |
| 671 | void *data, int *got_frame, |
| 672 | AVPacket *avpkt) |
| 673 | { |
| 674 | IffContext *s = avctx->priv_data; |
| 675 | const uint8_t *buf = avpkt->size >= 2 ? avpkt->data + AV_RB16(avpkt->data) : NULL; |
| 676 | const int buf_size = avpkt->size >= 2 ? avpkt->size - AV_RB16(avpkt->data) : 0; |
| 677 | const uint8_t *buf_end = buf + buf_size; |
| 678 | int y, plane, res; |
| 679 | GetByteContext gb; |
| 680 | const AVPixFmtDescriptor *desc; |
| 681 | |
| 682 | if ((res = extract_header(avctx, avpkt)) < 0) |
| 683 | return res; |
| 684 | if ((res = ff_reget_buffer(avctx, s->frame)) < 0) |
| 685 | return res; |
| 686 | |
| 687 | desc = av_pix_fmt_desc_get(avctx->pix_fmt); |
| 688 | |
| 689 | if (!s->init && avctx->bits_per_coded_sample <= 8 && |
| 690 | avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
| 691 | if ((res = cmap_read_palette(avctx, (uint32_t *)s->frame->data[1])) < 0) |
| 692 | return res; |
| 693 | } else if (!s->init && avctx->bits_per_coded_sample <= 8 && |
| 694 | avctx->pix_fmt == AV_PIX_FMT_RGB32) { |
| 695 | if ((res = cmap_read_palette(avctx, s->mask_palbuf)) < 0) |
| 696 | return res; |
| 697 | } |
| 698 | s->init = 1; |
| 699 | |
| 700 | switch (s->compression) { |
| 701 | case 0: |
| 702 | if (avctx->codec_tag == MKTAG('A', 'C', 'B', 'M')) { |
| 703 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
| 704 | memset(s->frame->data[0], 0, avctx->height * s->frame->linesize[0]); |
| 705 | for (plane = 0; plane < s->bpp; plane++) { |
| 706 | for (y = 0; y < avctx->height && buf < buf_end; y++) { |
| 707 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 708 | decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); |
| 709 | buf += s->planesize; |
| 710 | } |
| 711 | } |
| 712 | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 |
| 713 | memset(s->frame->data[0], 0, avctx->height * s->frame->linesize[0]); |
| 714 | for (y = 0; y < avctx->height; y++) { |
| 715 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 716 | memset(s->ham_buf, 0, s->planesize * 8); |
| 717 | for (plane = 0; plane < s->bpp; plane++) { |
| 718 | const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize; |
| 719 | if (start >= buf_end) |
| 720 | break; |
| 721 | decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane); |
| 722 | } |
| 723 | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); |
| 724 | } |
| 725 | } else |
| 726 | return unsupported(avctx); |
| 727 | } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { |
| 728 | int raw_width = avctx->width * (av_get_bits_per_pixel(desc) >> 3); |
| 729 | int x; |
| 730 | for (y = 0; y < avctx->height && buf < buf_end; y++) { |
| 731 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 732 | memcpy(row, buf, FFMIN(raw_width, buf_end - buf)); |
| 733 | buf += raw_width; |
| 734 | if (avctx->pix_fmt == AV_PIX_FMT_BGR32) { |
| 735 | for (x = 0; x < avctx->width; x++) |
| 736 | row[4 * x + 3] = row[4 * x + 3] & 0xF0 | (row[4 * x + 3] >> 4); |
| 737 | } |
| 738 | } |
| 739 | } else if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M')) { // interleaved |
| 740 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
| 741 | for (y = 0; y < avctx->height; y++) { |
| 742 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 743 | memset(row, 0, avctx->width); |
| 744 | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { |
| 745 | decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); |
| 746 | buf += s->planesize; |
| 747 | } |
| 748 | } |
| 749 | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 |
| 750 | for (y = 0; y < avctx->height; y++) { |
| 751 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 752 | memset(s->ham_buf, 0, s->planesize * 8); |
| 753 | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { |
| 754 | decodeplane8(s->ham_buf, buf, FFMIN(s->planesize, buf_end - buf), plane); |
| 755 | buf += s->planesize; |
| 756 | } |
| 757 | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); |
| 758 | } |
| 759 | } else { // AV_PIX_FMT_BGR32 |
| 760 | for (y = 0; y < avctx->height; y++) { |
| 761 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 762 | memset(row, 0, avctx->width << 2); |
| 763 | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { |
| 764 | decodeplane32((uint32_t *)row, buf, |
| 765 | FFMIN(s->planesize, buf_end - buf), plane); |
| 766 | buf += s->planesize; |
| 767 | } |
| 768 | } |
| 769 | } |
| 770 | } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM |
| 771 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
| 772 | for (y = 0; y < avctx->height && buf_end > buf; y++) { |
| 773 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 774 | memcpy(row, buf, FFMIN(avctx->width, buf_end - buf)); |
| 775 | buf += avctx->width + (avctx->width % 2); // padding if odd |
| 776 | } |
| 777 | } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 |
| 778 | for (y = 0; y < avctx->height && buf_end > buf; y++) { |
| 779 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 780 | memcpy(s->ham_buf, buf, FFMIN(avctx->width, buf_end - buf)); |
| 781 | buf += avctx->width + (avctx->width & 1); // padding if odd |
| 782 | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); |
| 783 | } |
| 784 | } else |
| 785 | return unsupported(avctx); |
| 786 | } |
| 787 | break; |
| 788 | case 1: |
| 789 | if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M')) { // interleaved |
| 790 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
| 791 | for (y = 0; y < avctx->height; y++) { |
| 792 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 793 | memset(row, 0, avctx->width); |
| 794 | for (plane = 0; plane < s->bpp; plane++) { |
| 795 | buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); |
| 796 | decodeplane8(row, s->planebuf, s->planesize, plane); |
| 797 | } |
| 798 | } |
| 799 | } else if (avctx->bits_per_coded_sample <= 8) { //8-bit (+ mask) to AV_PIX_FMT_BGR32 |
| 800 | for (y = 0; y < avctx->height; y++) { |
| 801 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 802 | memset(s->mask_buf, 0, avctx->width * sizeof(uint32_t)); |
| 803 | for (plane = 0; plane < s->bpp; plane++) { |
| 804 | buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); |
| 805 | decodeplane32(s->mask_buf, s->planebuf, s->planesize, plane); |
| 806 | } |
| 807 | lookup_pal_indicies((uint32_t *)row, s->mask_buf, s->mask_palbuf, avctx->width); |
| 808 | } |
| 809 | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 |
| 810 | for (y = 0; y < avctx->height; y++) { |
| 811 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 812 | memset(s->ham_buf, 0, s->planesize * 8); |
| 813 | for (plane = 0; plane < s->bpp; plane++) { |
| 814 | buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); |
| 815 | decodeplane8(s->ham_buf, s->planebuf, s->planesize, plane); |
| 816 | } |
| 817 | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); |
| 818 | } |
| 819 | } else { // AV_PIX_FMT_BGR32 |
| 820 | for (y = 0; y < avctx->height; y++) { |
| 821 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 822 | memset(row, 0, avctx->width << 2); |
| 823 | for (plane = 0; plane < s->bpp; plane++) { |
| 824 | buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end); |
| 825 | decodeplane32((uint32_t *)row, s->planebuf, s->planesize, plane); |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM |
| 830 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
| 831 | for (y = 0; y < avctx->height; y++) { |
| 832 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 833 | buf += decode_byterun(row, avctx->width, buf, buf_end); |
| 834 | } |
| 835 | } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 |
| 836 | for (y = 0; y < avctx->height; y++) { |
| 837 | uint8_t *row = &s->frame->data[0][y * s->frame->linesize[0]]; |
| 838 | buf += decode_byterun(s->ham_buf, avctx->width, buf, buf_end); |
| 839 | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); |
| 840 | } |
| 841 | } else |
| 842 | return unsupported(avctx); |
| 843 | } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { // IFF-DEEP |
| 844 | if (av_get_bits_per_pixel(desc) == 32) |
| 845 | decode_deep_rle32(s->frame->data[0], buf, buf_size, avctx->width, avctx->height, s->frame->linesize[0]); |
| 846 | else |
| 847 | return unsupported(avctx); |
| 848 | } |
| 849 | break; |
| 850 | case 4: |
| 851 | bytestream2_init(&gb, buf, buf_size); |
| 852 | if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8') && avctx->pix_fmt == AV_PIX_FMT_RGB32) |
| 853 | decode_rgb8(&gb, s->frame->data[0], avctx->width, avctx->height, s->frame->linesize[0]); |
| 854 | else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N') && avctx->pix_fmt == AV_PIX_FMT_RGB444) |
| 855 | decode_rgbn(&gb, s->frame->data[0], avctx->width, avctx->height, s->frame->linesize[0]); |
| 856 | else |
| 857 | return unsupported(avctx); |
| 858 | break; |
| 859 | case 5: |
| 860 | if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { |
| 861 | if (av_get_bits_per_pixel(desc) == 32) |
| 862 | decode_deep_tvdc32(s->frame->data[0], buf, buf_size, avctx->width, avctx->height, s->frame->linesize[0], s->tvdc); |
| 863 | else |
| 864 | return unsupported(avctx); |
| 865 | } else |
| 866 | return unsupported(avctx); |
| 867 | break; |
| 868 | default: |
| 869 | return unsupported(avctx); |
| 870 | } |
| 871 | |
| 872 | if ((res = av_frame_ref(data, s->frame)) < 0) |
| 873 | return res; |
| 874 | |
| 875 | *got_frame = 1; |
| 876 | |
| 877 | return buf_size; |
| 878 | } |
| 879 | |
| 880 | #if CONFIG_IFF_ILBM_DECODER |
| 881 | AVCodec ff_iff_ilbm_decoder = { |
| 882 | .name = "iff", |
| 883 | .long_name = NULL_IF_CONFIG_SMALL("IFF"), |
| 884 | .type = AVMEDIA_TYPE_VIDEO, |
| 885 | .id = AV_CODEC_ID_IFF_ILBM, |
| 886 | .priv_data_size = sizeof(IffContext), |
| 887 | .init = decode_init, |
| 888 | .close = decode_end, |
| 889 | .decode = decode_frame, |
| 890 | .capabilities = CODEC_CAP_DR1, |
| 891 | }; |
| 892 | #endif |
| 893 | #if CONFIG_IFF_BYTERUN1_DECODER |
| 894 | AVCodec ff_iff_byterun1_decoder = { |
| 895 | .name = "iff", |
| 896 | .long_name = NULL_IF_CONFIG_SMALL("IFF"), |
| 897 | .type = AVMEDIA_TYPE_VIDEO, |
| 898 | .id = AV_CODEC_ID_IFF_BYTERUN1, |
| 899 | .priv_data_size = sizeof(IffContext), |
| 900 | .init = decode_init, |
| 901 | .close = decode_end, |
| 902 | .decode = decode_frame, |
| 903 | .capabilities = CODEC_CAP_DR1, |
| 904 | }; |
| 905 | #endif |