| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Indeo Video Interactive v4 compatible decoder | ||
| 3 | * Copyright (c) 2009-2011 Maxim Poliakovski | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * Indeo Video Interactive version 4 decoder | ||
| 25 | * | ||
| 26 | * Indeo 4 data is usually transported within .avi or .mov files. | ||
| 27 | * Known FOURCCs: 'IV41' | ||
| 28 | */ | ||
| 29 | |||
| 30 | #define BITSTREAM_READER_LE | ||
| 31 | #include "avcodec.h" | ||
| 32 | #include "codec_internal.h" | ||
| 33 | #include "get_bits.h" | ||
| 34 | #include "libavutil/imgutils.h" | ||
| 35 | #include "indeo4data.h" | ||
| 36 | #include "ivi.h" | ||
| 37 | #include "ivi_dsp.h" | ||
| 38 | |||
| 39 | #define IVI4_PIC_SIZE_ESC 7 | ||
| 40 | |||
| 41 | |||
| 42 | static const struct { | ||
| 43 | InvTransformPtr *inv_trans; | ||
| 44 | DCTransformPtr *dc_trans; | ||
| 45 | int is_2d_trans; | ||
| 46 | } transforms[18] = { | ||
| 47 | { ff_ivi_inverse_haar_8x8, ff_ivi_dc_haar_2d, 1 }, | ||
| 48 | { ff_ivi_row_haar8, ff_ivi_dc_haar_2d, 0 }, | ||
| 49 | { ff_ivi_col_haar8, ff_ivi_dc_haar_2d, 0 }, | ||
| 50 | { ff_ivi_put_pixels_8x8, ff_ivi_put_dc_pixel_8x8, 1 }, | ||
| 51 | { ff_ivi_inverse_slant_8x8, ff_ivi_dc_slant_2d, 1 }, | ||
| 52 | { ff_ivi_row_slant8, ff_ivi_dc_row_slant, 1 }, | ||
| 53 | { ff_ivi_col_slant8, ff_ivi_dc_col_slant, 1 }, | ||
| 54 | { NULL, NULL, 0 }, /* inverse DCT 8x8 */ | ||
| 55 | { NULL, NULL, 0 }, /* inverse DCT 8x1 */ | ||
| 56 | { NULL, NULL, 0 }, /* inverse DCT 1x8 */ | ||
| 57 | { ff_ivi_inverse_haar_4x4, ff_ivi_dc_haar_2d, 1 }, | ||
| 58 | { ff_ivi_inverse_slant_4x4, ff_ivi_dc_slant_2d, 1 }, | ||
| 59 | { NULL, NULL, 0 }, /* no transform 4x4 */ | ||
| 60 | { ff_ivi_row_haar4, ff_ivi_dc_haar_2d, 0 }, | ||
| 61 | { ff_ivi_col_haar4, ff_ivi_dc_haar_2d, 0 }, | ||
| 62 | { ff_ivi_row_slant4, ff_ivi_dc_row_slant, 0 }, | ||
| 63 | { ff_ivi_col_slant4, ff_ivi_dc_col_slant, 0 }, | ||
| 64 | { NULL, NULL, 0 }, /* inverse DCT 4x4 */ | ||
| 65 | }; | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Decode subdivision of a plane. | ||
| 69 | * This is a simplified version that checks for two supported subdivisions: | ||
| 70 | * - 1 wavelet band per plane, size factor 1:1, code pattern: 3 | ||
| 71 | * - 4 wavelet bands per plane, size factor 1:4, code pattern: 2,3,3,3,3 | ||
| 72 | * Anything else is either unsupported or corrupt. | ||
| 73 | * | ||
| 74 | * @param[in,out] gb the GetBit context | ||
| 75 | * @return number of wavelet bands or 0 on error | ||
| 76 | */ | ||
| 77 | 202 | static int decode_plane_subdivision(GetBitContext *gb) | |
| 78 | { | ||
| 79 | int i; | ||
| 80 | |||
| 81 |
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202 | switch (get_bits(gb, 2)) { |
| 82 | 202 | case 3: | |
| 83 | 202 | return 1; | |
| 84 | ✗ | case 2: | |
| 85 | ✗ | for (i = 0; i < 4; i++) | |
| 86 | ✗ | if (get_bits(gb, 2) != 3) | |
| 87 | ✗ | return 0; | |
| 88 | ✗ | return 4; | |
| 89 | ✗ | default: | |
| 90 | ✗ | return 0; | |
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | ✗ | static inline int scale_tile_size(int def_size, int size_factor) | |
| 95 | { | ||
| 96 | ✗ | return size_factor == 15 ? def_size : (size_factor + 1) << 5; | |
| 97 | } | ||
| 98 | |||
| 99 | /** | ||
| 100 | * Decode Indeo 4 picture header. | ||
| 101 | * | ||
| 102 | * @param[in,out] ctx pointer to the decoder context | ||
| 103 | * @param[in] avctx pointer to the AVCodecContext | ||
| 104 | * @return result code: 0 = OK, negative number = error | ||
| 105 | */ | ||
| 106 | 101 | static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx) | |
| 107 | { | ||
| 108 | int pic_size_indx, i, p; | ||
| 109 | IVIPicConfig pic_conf; | ||
| 110 | |||
| 111 |
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101 | if (get_bits(&ctx->gb, 18) != 0x3FFF8) { |
| 112 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n"); | |
| 113 | ✗ | return AVERROR_INVALIDDATA; | |
| 114 | } | ||
| 115 | |||
| 116 | 101 | ctx->prev_frame_type = ctx->frame_type; | |
| 117 | 101 | ctx->frame_type = get_bits(&ctx->gb, 3); | |
| 118 |
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101 | if (ctx->frame_type == 7) { |
| 119 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type); | |
| 120 | ✗ | return AVERROR_INVALIDDATA; | |
| 121 | } | ||
| 122 | |||
| 123 |
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101 | if (ctx->frame_type == IVI4_FRAMETYPE_BIDIR) |
| 124 | ✗ | ctx->has_b_frames = 1; | |
| 125 | |||
| 126 | 101 | ctx->has_transp = get_bits1(&ctx->gb); | |
| 127 | |||
| 128 | /* unknown bit: Mac decoder ignores this bit, XANIM returns error */ | ||
| 129 |
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101 | if (get_bits1(&ctx->gb)) { |
| 130 | ✗ | av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n"); | |
| 131 | ✗ | return AVERROR_INVALIDDATA; | |
| 132 | } | ||
| 133 | |||
| 134 |
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101 | ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0; |
| 135 | |||
| 136 | /* null frames don't contain anything else so we just return */ | ||
| 137 |
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101 | if (ctx->frame_type >= IVI4_FRAMETYPE_NULL_FIRST) { |
| 138 | ff_dlog(avctx, "Null frame encountered!\n"); | ||
| 139 | ✗ | return 0; | |
| 140 | } | ||
| 141 | |||
| 142 | /* Check key lock status. If enabled - ignore lock word. */ | ||
| 143 | /* Usually we have to prompt the user for the password, but */ | ||
| 144 | /* we don't do that because Indeo 4 videos can be decoded anyway */ | ||
| 145 |
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101 | if (get_bits1(&ctx->gb)) { |
| 146 | ✗ | skip_bits_long(&ctx->gb, 32); | |
| 147 | ff_dlog(avctx, "Password-protected clip!\n"); | ||
| 148 | } | ||
| 149 | |||
| 150 | 101 | pic_size_indx = get_bits(&ctx->gb, 3); | |
| 151 |
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101 | if (pic_size_indx == IVI4_PIC_SIZE_ESC) { |
| 152 | ✗ | pic_conf.pic_height = get_bits(&ctx->gb, 16); | |
| 153 | ✗ | pic_conf.pic_width = get_bits(&ctx->gb, 16); | |
| 154 | } else { | ||
| 155 | 101 | pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1]; | |
| 156 | 101 | pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ]; | |
| 157 | } | ||
| 158 | |||
| 159 | /* Decode tile dimensions. */ | ||
| 160 | 101 | ctx->uses_tiling = get_bits1(&ctx->gb); | |
| 161 |
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101 | if (ctx->uses_tiling) { |
| 162 | ✗ | pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4)); | |
| 163 | ✗ | pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4)); | |
| 164 | } else { | ||
| 165 | 101 | pic_conf.tile_height = pic_conf.pic_height; | |
| 166 | 101 | pic_conf.tile_width = pic_conf.pic_width; | |
| 167 | } | ||
| 168 | |||
| 169 | /* Decode chroma subsampling. We support only 4:4 aka YVU9. */ | ||
| 170 |
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101 | if (get_bits(&ctx->gb, 2)) { |
| 171 | ✗ | av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n"); | |
| 172 | ✗ | return AVERROR_INVALIDDATA; | |
| 173 | } | ||
| 174 | 101 | pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2; | |
| 175 | 101 | pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2; | |
| 176 | |||
| 177 | /* decode subdivision of the planes */ | ||
| 178 | 101 | pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb); | |
| 179 | 101 | pic_conf.chroma_bands = 0; | |
| 180 |
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101 | if (pic_conf.luma_bands) |
| 181 | 101 | pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb); | |
| 182 | |||
| 183 |
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101 | if (av_image_check_size2(pic_conf.pic_width, pic_conf.pic_height, avctx->max_pixels, AV_PIX_FMT_YUV410P, 0, avctx) < 0) { |
| 184 | ✗ | av_log(avctx, AV_LOG_ERROR, "picture dimensions %d %d cannot be decoded\n", | |
| 185 | ✗ | pic_conf.pic_width, pic_conf.pic_height); | |
| 186 | ✗ | return AVERROR_INVALIDDATA; | |
| 187 | } | ||
| 188 | |||
| 189 |
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101 | ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1; |
| 190 |
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101 | if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) { |
| 191 | ✗ | av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n", | |
| 192 | ✗ | pic_conf.luma_bands, pic_conf.chroma_bands); | |
| 193 | ✗ | return AVERROR_INVALIDDATA; | |
| 194 | } | ||
| 195 | |||
| 196 | /* check if picture layout was changed and reallocate buffers */ | ||
| 197 |
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101 | if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) { |
| 198 |
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1 | if (ff_ivi_init_planes(avctx, ctx->planes, &pic_conf, 1)) { |
| 199 | ✗ | av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n"); | |
| 200 | ✗ | ctx->pic_conf.luma_bands = 0; | |
| 201 | ✗ | return AVERROR(ENOMEM); | |
| 202 | } | ||
| 203 | |||
| 204 | 1 | ctx->pic_conf = pic_conf; | |
| 205 | |||
| 206 | /* set default macroblock/block dimensions */ | ||
| 207 |
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4 | for (p = 0; p <= 2; p++) { |
| 208 |
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6 | for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) { |
| 209 |
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3 | ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4; |
| 210 |
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3 | ctx->planes[p].bands[i].blk_size = !p ? 8 : 4; |
| 211 | } | ||
| 212 | } | ||
| 213 | |||
| 214 |
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1 | if (ff_ivi_init_tiles(ctx->planes, ctx->pic_conf.tile_width, |
| 215 | 1 | ctx->pic_conf.tile_height)) { | |
| 216 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 217 | "Couldn't reallocate internal structures!\n"); | ||
| 218 | ✗ | return AVERROR(ENOMEM); | |
| 219 | } | ||
| 220 | } | ||
| 221 | |||
| 222 |
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101 | ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0; |
| 223 | |||
| 224 | /* skip decTimeEst field if present */ | ||
| 225 |
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101 | if (get_bits1(&ctx->gb)) |
| 226 | ✗ | skip_bits(&ctx->gb, 8); | |
| 227 | |||
| 228 | /* decode macroblock and block huffman codebooks */ | ||
| 229 |
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202 | if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) || |
| 230 | 101 | ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx)) | |
| 231 | ✗ | return AVERROR_INVALIDDATA; | |
| 232 | |||
| 233 |
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101 | ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8; |
| 234 | |||
| 235 | 101 | ctx->in_imf = get_bits1(&ctx->gb); | |
| 236 | 101 | ctx->in_q = get_bits1(&ctx->gb); | |
| 237 | |||
| 238 | 101 | ctx->pic_glob_quant = get_bits(&ctx->gb, 5); | |
| 239 | |||
| 240 | /* TODO: ignore this parameter if unused */ | ||
| 241 |
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101 | ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0; |
| 242 | |||
| 243 |
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101 | ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0; |
| 244 | |||
| 245 | /* skip picture header extension if any */ | ||
| 246 |
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202 | while (get_bits1(&ctx->gb)) { |
| 247 | ff_dlog(avctx, "Pic hdr extension encountered!\n"); | ||
| 248 |
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101 | if (get_bits_left(&ctx->gb) < 10) |
| 249 | ✗ | return AVERROR_INVALIDDATA; | |
| 250 | 101 | skip_bits(&ctx->gb, 8); | |
| 251 | } | ||
| 252 | |||
| 253 |
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101 | if (get_bits1(&ctx->gb)) { |
| 254 | ✗ | av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n"); | |
| 255 | } | ||
| 256 | |||
| 257 | 101 | align_get_bits(&ctx->gb); | |
| 258 | |||
| 259 | 101 | return 0; | |
| 260 | } | ||
| 261 | |||
| 262 | |||
| 263 | /** | ||
| 264 | * Decode Indeo 4 band header. | ||
| 265 | * | ||
| 266 | * @param[in,out] ctx pointer to the decoder context | ||
| 267 | * @param[in,out] band pointer to the band descriptor | ||
| 268 | * @param[in] avctx pointer to the AVCodecContext | ||
| 269 | * @return result code: 0 = OK, negative number = error | ||
| 270 | */ | ||
| 271 | 301 | static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *arg_band, | |
| 272 | AVCodecContext *avctx) | ||
| 273 | { | ||
| 274 | int plane, band_num, indx, transform_id, scan_indx; | ||
| 275 | int i; | ||
| 276 | int quant_mat; | ||
| 277 | 301 | IVIBandDesc temp_band, *band = &temp_band; | |
| 278 | 301 | memcpy(&temp_band, arg_band, sizeof(temp_band)); | |
| 279 | |||
| 280 | 301 | plane = get_bits(&ctx->gb, 2); | |
| 281 | 301 | band_num = get_bits(&ctx->gb, 4); | |
| 282 |
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301 | if (band->plane != plane || band->band_num != band_num) { |
| 283 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n"); | |
| 284 | ✗ | return AVERROR_INVALIDDATA; | |
| 285 | } | ||
| 286 | |||
| 287 | 301 | band->is_empty = get_bits1(&ctx->gb); | |
| 288 |
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301 | if (!band->is_empty) { |
| 289 | 301 | int old_blk_size = band->blk_size; | |
| 290 | /* skip header size | ||
| 291 | * If header size is not given, header size is 4 bytes. */ | ||
| 292 |
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301 | if (get_bits1(&ctx->gb)) |
| 293 | 301 | skip_bits(&ctx->gb, 16); | |
| 294 | |||
| 295 | 301 | band->is_halfpel = get_bits(&ctx->gb, 2); | |
| 296 |
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301 | if (band->is_halfpel >= 2) { |
| 297 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n", | |
| 298 | band->is_halfpel); | ||
| 299 | ✗ | return AVERROR_INVALIDDATA; | |
| 300 | } | ||
| 301 |
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301 | if (!band->is_halfpel) |
| 302 | ✗ | ctx->uses_fullpel = 1; | |
| 303 | |||
| 304 | 301 | band->checksum_present = get_bits1(&ctx->gb); | |
| 305 |
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301 | if (band->checksum_present) |
| 306 | 301 | band->checksum = get_bits(&ctx->gb, 16); | |
| 307 | |||
| 308 | 301 | indx = get_bits(&ctx->gb, 2); | |
| 309 |
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301 | if (indx == 3) { |
| 310 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n"); | |
| 311 | ✗ | return AVERROR_INVALIDDATA; | |
| 312 | } | ||
| 313 | 301 | band->mb_size = 16 >> indx; | |
| 314 | 301 | band->blk_size = 8 >> (indx >> 1); | |
| 315 | |||
| 316 | 301 | band->inherit_mv = get_bits1(&ctx->gb); | |
| 317 | 301 | band->inherit_qdelta = get_bits1(&ctx->gb); | |
| 318 | |||
| 319 | 301 | band->glob_quant = get_bits(&ctx->gb, 5); | |
| 320 | |||
| 321 |
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301 | if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) { |
| 322 | 21 | transform_id = get_bits(&ctx->gb, 5); | |
| 323 |
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21 | if (transform_id >= FF_ARRAY_ELEMS(transforms) || |
| 324 |
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21 | !transforms[transform_id].inv_trans) { |
| 325 | ✗ | avpriv_request_sample(avctx, "Transform %d", transform_id); | |
| 326 | ✗ | return AVERROR_PATCHWELCOME; | |
| 327 | } | ||
| 328 |
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21 | if ((transform_id >= 7 && transform_id <= 9) || |
| 329 | transform_id == 17) { | ||
| 330 | ✗ | avpriv_request_sample(avctx, "DCT transform"); | |
| 331 | ✗ | return AVERROR_PATCHWELCOME; | |
| 332 | } | ||
| 333 | |||
| 334 |
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21 | if (transform_id < 10 && band->blk_size < 8) { |
| 335 | ✗ | av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n"); | |
| 336 | ✗ | return AVERROR_INVALIDDATA; | |
| 337 | } | ||
| 338 |
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21 | if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10) |
| 339 | ✗ | ctx->uses_haar = 1; | |
| 340 | |||
| 341 | 21 | band->inv_transform = transforms[transform_id].inv_trans; | |
| 342 | 21 | band->dc_transform = transforms[transform_id].dc_trans; | |
| 343 | 21 | band->is_2d_trans = transforms[transform_id].is_2d_trans; | |
| 344 | |||
| 345 |
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21 | if (transform_id < 10) |
| 346 | 7 | band->transform_size = 8; | |
| 347 | else | ||
| 348 | 14 | band->transform_size = 4; | |
| 349 | |||
| 350 |
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21 | if (band->blk_size != band->transform_size) { |
| 351 | ✗ | av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size); | |
| 352 | ✗ | return AVERROR_INVALIDDATA; | |
| 353 | } | ||
| 354 | |||
| 355 | 21 | scan_indx = get_bits(&ctx->gb, 4); | |
| 356 |
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21 | if (scan_indx == 15) { |
| 357 | ✗ | av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n"); | |
| 358 | ✗ | return AVERROR_INVALIDDATA; | |
| 359 | } | ||
| 360 |
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21 | if (scan_indx > 4 && scan_indx < 10) { |
| 361 |
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14 | if (band->blk_size != 4) { |
| 362 | ✗ | av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n"); | |
| 363 | ✗ | return AVERROR_INVALIDDATA; | |
| 364 | } | ||
| 365 |
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7 | } else if (band->blk_size != 8) { |
| 366 | ✗ | av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n"); | |
| 367 | ✗ | return AVERROR_INVALIDDATA; | |
| 368 | } | ||
| 369 | |||
| 370 | 21 | band->scan = scan_index_to_tab[scan_indx]; | |
| 371 | 21 | band->scan_size = band->blk_size; | |
| 372 | |||
| 373 | 21 | quant_mat = get_bits(&ctx->gb, 5); | |
| 374 |
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21 | if (quant_mat == 31) { |
| 375 | ✗ | av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n"); | |
| 376 | ✗ | return AVERROR_INVALIDDATA; | |
| 377 | } | ||
| 378 |
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21 | if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) { |
| 379 | ✗ | avpriv_request_sample(avctx, "Quantization matrix %d", | |
| 380 | quant_mat); | ||
| 381 | ✗ | return AVERROR_INVALIDDATA; | |
| 382 | } | ||
| 383 | 21 | band->quant_mat = quant_mat; | |
| 384 | } else { | ||
| 385 |
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280 | if (old_blk_size != band->blk_size) { |
| 386 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 387 | "The band block size does not match the configuration " | ||
| 388 | "inherited\n"); | ||
| 389 | ✗ | return AVERROR_INVALIDDATA; | |
| 390 | } | ||
| 391 | } | ||
| 392 |
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301 | if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) { |
| 393 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n"); | |
| 394 | ✗ | band->quant_mat = 0; | |
| 395 | ✗ | return AVERROR_INVALIDDATA; | |
| 396 | } | ||
| 397 |
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301 | if (band->scan_size != band->blk_size) { |
| 398 | ✗ | av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n"); | |
| 399 | ✗ | return AVERROR_INVALIDDATA; | |
| 400 | } | ||
| 401 |
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301 | if (band->transform_size == 8 && band->blk_size < 8) { |
| 402 | ✗ | av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n"); | |
| 403 | ✗ | return AVERROR_INVALIDDATA; | |
| 404 | } | ||
| 405 | |||
| 406 | /* decode block huffman codebook */ | ||
| 407 |
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|
301 | if (!get_bits1(&ctx->gb)) |
| 408 | ✗ | arg_band->blk_vlc.tab = ctx->blk_vlc.tab; | |
| 409 | else | ||
| 410 |
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301 | if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF, |
| 411 | &arg_band->blk_vlc, avctx)) | ||
| 412 | ✗ | return AVERROR_INVALIDDATA; | |
| 413 | |||
| 414 | /* select appropriate rvmap table for this band */ | ||
| 415 |
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301 | band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8; |
| 416 | |||
| 417 | /* decode rvmap probability corrections if any */ | ||
| 418 | 301 | band->num_corr = 0; /* there is no corrections */ | |
| 419 |
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301 | if (get_bits1(&ctx->gb)) { |
| 420 | 253 | band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */ | |
| 421 |
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253 | if (band->num_corr > 61) { |
| 422 | ✗ | av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n", | |
| 423 | band->num_corr); | ||
| 424 | ✗ | return AVERROR_INVALIDDATA; | |
| 425 | } | ||
| 426 | |||
| 427 | /* read correction pairs */ | ||
| 428 |
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4087 | for (i = 0; i < band->num_corr * 2; i++) |
| 429 | 3834 | band->corr[i] = get_bits(&ctx->gb, 8); | |
| 430 | } | ||
| 431 | } | ||
| 432 | |||
| 433 |
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301 | if (band->blk_size == 8) { |
| 434 | 101 | band->intra_base = &ivi4_quant_8x8_intra[quant_index_to_tab[band->quant_mat]][0]; | |
| 435 | 101 | band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0]; | |
| 436 | } else { | ||
| 437 | 200 | band->intra_base = &ivi4_quant_4x4_intra[quant_index_to_tab[band->quant_mat]][0]; | |
| 438 | 200 | band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0]; | |
| 439 | } | ||
| 440 | |||
| 441 | /* Indeo 4 doesn't use scale tables */ | ||
| 442 | 301 | band->intra_scale = NULL; | |
| 443 | 301 | band->inter_scale = NULL; | |
| 444 | |||
| 445 | 301 | align_get_bits(&ctx->gb); | |
| 446 | |||
| 447 |
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301 | if (!band->scan) { |
| 448 | ✗ | av_log(avctx, AV_LOG_ERROR, "band->scan not set\n"); | |
| 449 | ✗ | return AVERROR_INVALIDDATA; | |
| 450 | } | ||
| 451 | |||
| 452 | 301 | band->blk_vlc = arg_band->blk_vlc; | |
| 453 | 301 | memcpy(arg_band, band, sizeof(*arg_band)); | |
| 454 | |||
| 455 | 301 | return 0; | |
| 456 | } | ||
| 457 | |||
| 458 | |||
| 459 | /** | ||
| 460 | * Decode information (block type, cbp, quant delta, motion vector) | ||
| 461 | * for all macroblocks in the current tile. | ||
| 462 | * | ||
| 463 | * @param[in,out] ctx pointer to the decoder context | ||
| 464 | * @param[in,out] band pointer to the band descriptor | ||
| 465 | * @param[in,out] tile pointer to the tile descriptor | ||
| 466 | * @param[in] avctx pointer to the AVCodecContext | ||
| 467 | * @return result code: 0 = OK, negative number = error | ||
| 468 | */ | ||
| 469 | 301 | static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, | |
| 470 | IVITile *tile, AVCodecContext *avctx) | ||
| 471 | { | ||
| 472 | int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb, | ||
| 473 | mv_scale, mb_type_bits, s; | ||
| 474 | IVIMbInfo *mb, *ref_mb; | ||
| 475 | 301 | int row_offset = band->mb_size * band->pitch; | |
| 476 | |||
| 477 | 301 | mb = tile->mbs; | |
| 478 | 301 | ref_mb = tile->ref_mbs; | |
| 479 | 301 | offs = tile->ypos * band->pitch + tile->xpos; | |
| 480 | |||
| 481 |
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301 | blks_per_mb = band->mb_size != band->blk_size ? 4 : 1; |
| 482 |
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301 | mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1; |
| 483 | |||
| 484 | /* scale factor for motion vectors */ | ||
| 485 | 301 | mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3); | |
| 486 | 301 | mv_x = mv_y = 0; | |
| 487 | |||
| 488 |
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301 | if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) { |
| 489 | ✗ | av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs); | |
| 490 | ✗ | return -1; | |
| 491 | } | ||
| 492 | |||
| 493 |
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4816 | for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) { |
| 494 | 4515 | mb_offset = offs; | |
| 495 | |||
| 496 |
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94815 | for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) { |
| 497 | 90300 | mb->xpos = x; | |
| 498 | 90300 | mb->ypos = y; | |
| 499 | 90300 | mb->buf_offs = mb_offset; | |
| 500 | 90300 | mb->b_mv_x = | |
| 501 | 90300 | mb->b_mv_y = 0; | |
| 502 | |||
| 503 |
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90300 | if (get_bits_left(&ctx->gb) < 1) { |
| 504 | ✗ | av_log(avctx, AV_LOG_ERROR, "Insufficient input for mb info\n"); | |
| 505 | ✗ | return AVERROR_INVALIDDATA; | |
| 506 | } | ||
| 507 | |||
| 508 |
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90300 | if (get_bits1(&ctx->gb)) { |
| 509 |
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2014 | if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) { |
| 510 | ✗ | av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n"); | |
| 511 | ✗ | return AVERROR_INVALIDDATA; | |
| 512 | } | ||
| 513 | 2014 | mb->type = 1; /* empty macroblocks are always INTER */ | |
| 514 | 2014 | mb->cbp = 0; /* all blocks are empty */ | |
| 515 | |||
| 516 | 2014 | mb->q_delta = 0; | |
| 517 |
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2014 | if (!band->plane && !band->band_num && ctx->in_q) { |
| 518 | 56 | mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 519 | IVI_VLC_BITS, 1); | ||
| 520 | 56 | mb->q_delta = IVI_TOSIGNED(mb->q_delta); | |
| 521 | } | ||
| 522 | |||
| 523 | 2014 | mb->mv_x = mb->mv_y = 0; /* no motion vector coded */ | |
| 524 |
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2014 | if (band->inherit_mv && ref_mb) { |
| 525 | /* motion vector inheritance */ | ||
| 526 |
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1958 | if (mv_scale) { |
| 527 | 1958 | mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); | |
| 528 | 1958 | mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); | |
| 529 | } else { | ||
| 530 | ✗ | mb->mv_x = ref_mb->mv_x; | |
| 531 | ✗ | mb->mv_y = ref_mb->mv_y; | |
| 532 | } | ||
| 533 | } | ||
| 534 | } else { | ||
| 535 |
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88286 | if (band->inherit_mv) { |
| 536 | /* copy mb_type from corresponding reference mb */ | ||
| 537 |
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58042 | if (!ref_mb) { |
| 538 | ✗ | av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n"); | |
| 539 | ✗ | return AVERROR_INVALIDDATA; | |
| 540 | } | ||
| 541 | 58042 | mb->type = ref_mb->type; | |
| 542 |
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30244 | } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA || |
| 543 |
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28144 | ctx->frame_type == IVI4_FRAMETYPE_INTRA1) { |
| 544 | 2100 | mb->type = 0; /* mb_type is always INTRA for intra-frames */ | |
| 545 | } else { | ||
| 546 | 28144 | mb->type = get_bits(&ctx->gb, mb_type_bits); | |
| 547 | } | ||
| 548 | |||
| 549 | 88286 | mb->cbp = get_bits(&ctx->gb, blks_per_mb); | |
| 550 | |||
| 551 | 88286 | mb->q_delta = 0; | |
| 552 |
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88286 | if (band->inherit_qdelta) { |
| 553 |
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58042 | if (ref_mb) mb->q_delta = ref_mb->q_delta; |
| 554 |
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30244 | } else if (mb->cbp || (!band->plane && !band->band_num && |
| 555 |
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967 | ctx->in_q)) { |
| 556 | 30244 | mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 557 | IVI_VLC_BITS, 1); | ||
| 558 | 30244 | mb->q_delta = IVI_TOSIGNED(mb->q_delta); | |
| 559 | } | ||
| 560 | |||
| 561 |
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88286 | if (!mb->type) { |
| 562 | 77874 | mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */ | |
| 563 | } else { | ||
| 564 |
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10412 | if (band->inherit_mv) { |
| 565 |
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6274 | if (ref_mb) |
| 566 | /* motion vector inheritance */ | ||
| 567 |
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6274 | if (mv_scale) { |
| 568 | 6274 | mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); | |
| 569 | 6274 | mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); | |
| 570 | } else { | ||
| 571 | ✗ | mb->mv_x = ref_mb->mv_x; | |
| 572 | ✗ | mb->mv_y = ref_mb->mv_y; | |
| 573 | } | ||
| 574 | } else { | ||
| 575 | /* decode motion vector deltas */ | ||
| 576 | 4138 | mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 577 | IVI_VLC_BITS, 1); | ||
| 578 | 4138 | mv_y += IVI_TOSIGNED(mv_delta); | |
| 579 | 4138 | mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 580 | IVI_VLC_BITS, 1); | ||
| 581 | 4138 | mv_x += IVI_TOSIGNED(mv_delta); | |
| 582 | 4138 | mb->mv_x = mv_x; | |
| 583 | 4138 | mb->mv_y = mv_y; | |
| 584 |
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4138 | if (mb->type == 3) { |
| 585 | ✗ | mv_delta = get_vlc2(&ctx->gb, | |
| 586 | ✗ | ctx->mb_vlc.tab->table, | |
| 587 | IVI_VLC_BITS, 1); | ||
| 588 | ✗ | mv_y += IVI_TOSIGNED(mv_delta); | |
| 589 | ✗ | mv_delta = get_vlc2(&ctx->gb, | |
| 590 | ✗ | ctx->mb_vlc.tab->table, | |
| 591 | IVI_VLC_BITS, 1); | ||
| 592 | ✗ | mv_x += IVI_TOSIGNED(mv_delta); | |
| 593 | ✗ | mb->b_mv_x = -mv_x; | |
| 594 | ✗ | mb->b_mv_y = -mv_y; | |
| 595 | } | ||
| 596 | } | ||
| 597 |
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10412 | if (mb->type == 2) { |
| 598 | ✗ | mb->b_mv_x = -mb->mv_x; | |
| 599 | ✗ | mb->b_mv_y = -mb->mv_y; | |
| 600 | ✗ | mb->mv_x = 0; | |
| 601 | ✗ | mb->mv_y = 0; | |
| 602 | } | ||
| 603 | } | ||
| 604 | } | ||
| 605 | |||
| 606 | 90300 | s= band->is_halfpel; | |
| 607 |
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90300 | if (mb->type) |
| 608 |
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12426 | if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 || |
| 609 | 12426 | x + ((mb->mv_x+s)>>s) + band->mb_size - 1 | |
| 610 |
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12426 | + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) { |
| 611 | ✗ | av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y); | |
| 612 | ✗ | return AVERROR_INVALIDDATA; | |
| 613 | } | ||
| 614 | |||
| 615 | 90300 | mb++; | |
| 616 |
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90300 | if (ref_mb) |
| 617 | 60000 | ref_mb++; | |
| 618 | 90300 | mb_offset += band->mb_size; | |
| 619 | } | ||
| 620 | |||
| 621 | 4515 | offs += row_offset; | |
| 622 | } | ||
| 623 | |||
| 624 | 301 | align_get_bits(&ctx->gb); | |
| 625 | |||
| 626 | 301 | return 0; | |
| 627 | } | ||
| 628 | |||
| 629 | |||
| 630 | /** | ||
| 631 | * Rearrange decoding and reference buffers. | ||
| 632 | * | ||
| 633 | * @param[in,out] ctx pointer to the decoder context | ||
| 634 | */ | ||
| 635 | 101 | static void switch_buffers(IVI45DecContext *ctx) | |
| 636 | { | ||
| 637 | 101 | int is_prev_ref = 0, is_ref = 0; | |
| 638 | |||
| 639 |
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101 | switch (ctx->prev_frame_type) { |
| 640 | 54 | case IVI4_FRAMETYPE_INTRA: | |
| 641 | case IVI4_FRAMETYPE_INTRA1: | ||
| 642 | case IVI4_FRAMETYPE_INTER: | ||
| 643 | 54 | is_prev_ref = 1; | |
| 644 | 54 | break; | |
| 645 | } | ||
| 646 | |||
| 647 |
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101 | switch (ctx->frame_type) { |
| 648 | 54 | case IVI4_FRAMETYPE_INTRA: | |
| 649 | case IVI4_FRAMETYPE_INTRA1: | ||
| 650 | case IVI4_FRAMETYPE_INTER: | ||
| 651 | 54 | is_ref = 1; | |
| 652 | 54 | break; | |
| 653 | } | ||
| 654 | |||
| 655 |
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101 | if (is_prev_ref && is_ref) { |
| 656 | 7 | FFSWAP(int, ctx->dst_buf, ctx->ref_buf); | |
| 657 |
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94 | } else if (is_prev_ref) { |
| 658 | 47 | FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf); | |
| 659 | 47 | FFSWAP(int, ctx->dst_buf, ctx->ref_buf); | |
| 660 | } | ||
| 661 | 101 | } | |
| 662 | |||
| 663 | |||
| 664 | 201 | static int is_nonnull_frame(IVI45DecContext *ctx) | |
| 665 | { | ||
| 666 | 201 | return ctx->frame_type < IVI4_FRAMETYPE_NULL_FIRST; | |
| 667 | } | ||
| 668 | |||
| 669 | |||
| 670 | 2 | static av_cold int decode_init(AVCodecContext *avctx) | |
| 671 | { | ||
| 672 | 2 | IVI45DecContext *ctx = avctx->priv_data; | |
| 673 | |||
| 674 | 2 | ff_ivi_init_static_vlc(); | |
| 675 | |||
| 676 | /* copy rvmap tables in our context so we can apply changes to them */ | ||
| 677 | 2 | memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs)); | |
| 678 | |||
| 679 | /* Force allocation of the internal buffers */ | ||
| 680 | /* during picture header decoding. */ | ||
| 681 | 2 | ctx->pic_conf.pic_width = 0; | |
| 682 | 2 | ctx->pic_conf.pic_height = 0; | |
| 683 | |||
| 684 | 2 | avctx->pix_fmt = AV_PIX_FMT_YUV410P; | |
| 685 | |||
| 686 | 2 | ctx->decode_pic_hdr = decode_pic_hdr; | |
| 687 | 2 | ctx->decode_band_hdr = decode_band_hdr; | |
| 688 | 2 | ctx->decode_mb_info = decode_mb_info; | |
| 689 | 2 | ctx->switch_buffers = switch_buffers; | |
| 690 | 2 | ctx->is_nonnull_frame = is_nonnull_frame; | |
| 691 | |||
| 692 | 2 | ctx->is_indeo4 = 1; | |
| 693 | 2 | ctx->show_indeo4_info = 1; | |
| 694 | |||
| 695 | 2 | ctx->dst_buf = 0; | |
| 696 | 2 | ctx->ref_buf = 1; | |
| 697 | 2 | ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */ | |
| 698 | 2 | ctx->p_frame = av_frame_alloc(); | |
| 699 |
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2 | if (!ctx->p_frame) |
| 700 | ✗ | return AVERROR(ENOMEM); | |
| 701 | |||
| 702 | 2 | return 0; | |
| 703 | } | ||
| 704 | |||
| 705 | |||
| 706 | const FFCodec ff_indeo4_decoder = { | ||
| 707 | .p.name = "indeo4", | ||
| 708 | CODEC_LONG_NAME("Intel Indeo Video Interactive 4"), | ||
| 709 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 710 | .p.id = AV_CODEC_ID_INDEO4, | ||
| 711 | .priv_data_size = sizeof(IVI45DecContext), | ||
| 712 | .init = decode_init, | ||
| 713 | .close = ff_ivi_decode_close, | ||
| 714 | FF_CODEC_DECODE_CB(ff_ivi_decode_frame), | ||
| 715 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
| 716 | }; | ||
| 717 |