| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Indeo Video Interactive v5 compatible decoder | ||
| 3 | * Copyright (c) 2009 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 5 decoder | ||
| 25 | * | ||
| 26 | * Indeo5 data is usually transported within .avi or .mov files. | ||
| 27 | * Known FOURCCs: 'IV50' | ||
| 28 | */ | ||
| 29 | |||
| 30 | #include "libavutil/attributes.h" | ||
| 31 | #define BITSTREAM_READER_LE | ||
| 32 | #include "avcodec.h" | ||
| 33 | #include "codec_internal.h" | ||
| 34 | #include "get_bits.h" | ||
| 35 | #include "ivi.h" | ||
| 36 | #include "ivi_dsp.h" | ||
| 37 | #include "indeo5data.h" | ||
| 38 | |||
| 39 | /** | ||
| 40 | * Indeo5 frame types. | ||
| 41 | */ | ||
| 42 | enum { | ||
| 43 | FRAMETYPE_INTRA = 0, | ||
| 44 | FRAMETYPE_INTER = 1, ///< non-droppable P-frame | ||
| 45 | FRAMETYPE_INTER_SCAL = 2, ///< droppable P-frame used in the scalability mode | ||
| 46 | FRAMETYPE_INTER_NOREF = 3, ///< droppable P-frame | ||
| 47 | FRAMETYPE_NULL = 4 ///< empty frame with no data | ||
| 48 | }; | ||
| 49 | |||
| 50 | #define IVI5_PIC_SIZE_ESC 15 | ||
| 51 | |||
| 52 | /** | ||
| 53 | * Decode Indeo5 GOP (Group of pictures) header. | ||
| 54 | * This header is present in key frames only. | ||
| 55 | * It defines parameters for all frames in a GOP. | ||
| 56 | * | ||
| 57 | * @param[in,out] ctx ptr to the decoder context | ||
| 58 | * @param[in] avctx ptr to the AVCodecContext | ||
| 59 | * @return result code: 0 = OK, -1 = error | ||
| 60 | */ | ||
| 61 | 9 | static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx) | |
| 62 | { | ||
| 63 | int result, i, p, tile_size, pic_size_indx, mb_size, blk_size, is_scalable; | ||
| 64 | 9 | int quant_mat, blk_size_changed = 0; | |
| 65 | IVIBandDesc *band, *band1, *band2; | ||
| 66 | IVIPicConfig pic_conf; | ||
| 67 | |||
| 68 | 9 | ctx->gop_flags = get_bits(&ctx->gb, 8); | |
| 69 | |||
| 70 |
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9 | ctx->gop_hdr_size = (ctx->gop_flags & 1) ? get_bits(&ctx->gb, 16) : 0; |
| 71 | |||
| 72 |
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9 | if (ctx->gop_flags & IVI5_IS_PROTECTED) |
| 73 | ✗ | ctx->lock_word = get_bits_long(&ctx->gb, 32); | |
| 74 | |||
| 75 |
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9 | tile_size = (ctx->gop_flags & 0x40) ? 64 << get_bits(&ctx->gb, 2) : 0; |
| 76 |
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9 | if (tile_size > 256) { |
| 77 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid tile size: %d\n", tile_size); | |
| 78 | ✗ | return AVERROR_INVALIDDATA; | |
| 79 | } | ||
| 80 | |||
| 81 | /* decode number of wavelet bands */ | ||
| 82 | /* num_levels * 3 + 1 */ | ||
| 83 | 9 | pic_conf.luma_bands = get_bits(&ctx->gb, 2) * 3 + 1; | |
| 84 | 9 | pic_conf.chroma_bands = get_bits1(&ctx->gb) * 3 + 1; | |
| 85 |
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9 | is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1; |
| 86 |
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9 | if (is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) { |
| 87 | ✗ | av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n", | |
| 88 | ✗ | pic_conf.luma_bands, pic_conf.chroma_bands); | |
| 89 | ✗ | return AVERROR_INVALIDDATA; | |
| 90 | } | ||
| 91 | |||
| 92 | 9 | pic_size_indx = get_bits(&ctx->gb, 4); | |
| 93 |
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9 | if (pic_size_indx == IVI5_PIC_SIZE_ESC) { |
| 94 | ✗ | pic_conf.pic_height = get_bits(&ctx->gb, 13); | |
| 95 | ✗ | pic_conf.pic_width = get_bits(&ctx->gb, 13); | |
| 96 | } else { | ||
| 97 | 9 | pic_conf.pic_height = ivi5_common_pic_sizes[pic_size_indx * 2 + 1] << 2; | |
| 98 | 9 | pic_conf.pic_width = ivi5_common_pic_sizes[pic_size_indx * 2 ] << 2; | |
| 99 | } | ||
| 100 | |||
| 101 |
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9 | if (ctx->gop_flags & 2) { |
| 102 | ✗ | avpriv_report_missing_feature(avctx, "YV12 picture format"); | |
| 103 | ✗ | return AVERROR_PATCHWELCOME; | |
| 104 | } | ||
| 105 | |||
| 106 | 9 | pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2; | |
| 107 | 9 | pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2; | |
| 108 | |||
| 109 |
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9 | if (!tile_size) { |
| 110 | 9 | pic_conf.tile_height = pic_conf.pic_height; | |
| 111 | 9 | pic_conf.tile_width = pic_conf.pic_width; | |
| 112 | } else { | ||
| 113 | ✗ | pic_conf.tile_height = pic_conf.tile_width = tile_size; | |
| 114 | } | ||
| 115 | |||
| 116 | /* check if picture layout was changed and reallocate buffers */ | ||
| 117 |
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9 | if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) { |
| 118 | 1 | result = ff_ivi_init_planes(avctx, ctx->planes, &pic_conf, 0); | |
| 119 |
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1 | if (result < 0) { |
| 120 | ✗ | av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n"); | |
| 121 | ✗ | return result; | |
| 122 | } | ||
| 123 | 1 | ctx->pic_conf = pic_conf; | |
| 124 | 1 | ctx->is_scalable = is_scalable; | |
| 125 | 1 | blk_size_changed = 1; /* force reallocation of the internal structures */ | |
| 126 | } | ||
| 127 | |||
| 128 |
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27 | for (p = 0; p <= 1; p++) { |
| 129 |
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36 | for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) { |
| 130 | 18 | band = &ctx->planes[p].bands[i]; | |
| 131 | |||
| 132 | 18 | band->is_halfpel = get_bits1(&ctx->gb); | |
| 133 | |||
| 134 | 18 | mb_size = get_bits1(&ctx->gb); | |
| 135 | 18 | blk_size = 8 >> get_bits1(&ctx->gb); | |
| 136 | 18 | mb_size = blk_size << !mb_size; | |
| 137 | |||
| 138 |
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18 | if (p==0 && blk_size==4) { |
| 139 | ✗ | av_log(avctx, AV_LOG_ERROR, "4x4 luma blocks are unsupported!\n"); | |
| 140 | ✗ | return AVERROR_PATCHWELCOME; | |
| 141 | } | ||
| 142 | |||
| 143 |
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18 | blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size; |
| 144 |
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18 | if (blk_size_changed) { |
| 145 | 2 | band->mb_size = mb_size; | |
| 146 | 2 | band->blk_size = blk_size; | |
| 147 | } | ||
| 148 | |||
| 149 |
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18 | if (get_bits1(&ctx->gb)) { |
| 150 | ✗ | avpriv_report_missing_feature(avctx, "Extended transform info"); | |
| 151 | ✗ | return AVERROR_PATCHWELCOME; | |
| 152 | } | ||
| 153 | |||
| 154 | /* select transform function and scan pattern according to plane and band number */ | ||
| 155 |
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18 | switch ((p << 2) + i) { |
| 156 | 9 | case 0: | |
| 157 | 9 | band->inv_transform = ff_ivi_inverse_slant_8x8; | |
| 158 | 9 | band->dc_transform = ff_ivi_dc_slant_2d; | |
| 159 | 9 | band->scan = ff_zigzag_direct; | |
| 160 | 9 | band->transform_size = 8; | |
| 161 | 9 | break; | |
| 162 | |||
| 163 | ✗ | case 1: | |
| 164 | ✗ | band->inv_transform = ff_ivi_row_slant8; | |
| 165 | ✗ | band->dc_transform = ff_ivi_dc_row_slant; | |
| 166 | ✗ | band->scan = ff_ivi_vertical_scan_8x8; | |
| 167 | ✗ | band->transform_size = 8; | |
| 168 | ✗ | break; | |
| 169 | |||
| 170 | ✗ | case 2: | |
| 171 | ✗ | band->inv_transform = ff_ivi_col_slant8; | |
| 172 | ✗ | band->dc_transform = ff_ivi_dc_col_slant; | |
| 173 | ✗ | band->scan = ff_ivi_horizontal_scan_8x8; | |
| 174 | ✗ | band->transform_size = 8; | |
| 175 | ✗ | break; | |
| 176 | |||
| 177 | ✗ | case 3: | |
| 178 | ✗ | band->inv_transform = ff_ivi_put_pixels_8x8; | |
| 179 | ✗ | band->dc_transform = ff_ivi_put_dc_pixel_8x8; | |
| 180 | ✗ | band->scan = ff_ivi_horizontal_scan_8x8; | |
| 181 | ✗ | band->transform_size = 8; | |
| 182 | ✗ | break; | |
| 183 | |||
| 184 | 9 | case 4: | |
| 185 | 9 | band->inv_transform = ff_ivi_inverse_slant_4x4; | |
| 186 | 9 | band->dc_transform = ff_ivi_dc_slant_2d; | |
| 187 | 9 | band->scan = ff_ivi_direct_scan_4x4; | |
| 188 | 9 | band->transform_size = 4; | |
| 189 | 9 | break; | |
| 190 | } | ||
| 191 | |||
| 192 |
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27 | band->is_2d_trans = band->inv_transform == ff_ivi_inverse_slant_8x8 || |
| 193 |
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9 | band->inv_transform == ff_ivi_inverse_slant_4x4; |
| 194 | |||
| 195 |
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18 | if (band->transform_size != band->blk_size) { |
| 196 | ✗ | av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size); | |
| 197 | ✗ | return AVERROR_INVALIDDATA; | |
| 198 | } | ||
| 199 | |||
| 200 | /* select dequant matrix according to plane and band number */ | ||
| 201 |
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18 | if (!p) { |
| 202 |
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9 | quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0; |
| 203 | } else { | ||
| 204 | 9 | quant_mat = 5; | |
| 205 | } | ||
| 206 | |||
| 207 |
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18 | if (band->blk_size == 8) { |
| 208 |
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9 | if(quant_mat >= 5){ |
| 209 | ✗ | av_log(avctx, AV_LOG_ERROR, "quant_mat %d too large!\n", quant_mat); | |
| 210 | ✗ | return -1; | |
| 211 | } | ||
| 212 | 9 | band->intra_base = &ivi5_base_quant_8x8_intra[quant_mat][0]; | |
| 213 | 9 | band->inter_base = &ivi5_base_quant_8x8_inter[quant_mat][0]; | |
| 214 | 9 | band->intra_scale = &ivi5_scale_quant_8x8_intra[quant_mat][0]; | |
| 215 | 9 | band->inter_scale = &ivi5_scale_quant_8x8_inter[quant_mat][0]; | |
| 216 | } else { | ||
| 217 | 9 | band->intra_base = ivi5_base_quant_4x4_intra; | |
| 218 | 9 | band->inter_base = ivi5_base_quant_4x4_inter; | |
| 219 | 9 | band->intra_scale = ivi5_scale_quant_4x4_intra; | |
| 220 | 9 | band->inter_scale = ivi5_scale_quant_4x4_inter; | |
| 221 | } | ||
| 222 | |||
| 223 |
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18 | if (get_bits(&ctx->gb, 2)) { |
| 224 | ✗ | av_log(avctx, AV_LOG_ERROR, "End marker missing!\n"); | |
| 225 | ✗ | return AVERROR_INVALIDDATA; | |
| 226 | } | ||
| 227 | } | ||
| 228 | } | ||
| 229 | |||
| 230 | /* copy chroma parameters into the 2nd chroma plane */ | ||
| 231 |
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18 | for (i = 0; i < pic_conf.chroma_bands; i++) { |
| 232 | 9 | band1 = &ctx->planes[1].bands[i]; | |
| 233 | 9 | band2 = &ctx->planes[2].bands[i]; | |
| 234 | |||
| 235 | 9 | band2->width = band1->width; | |
| 236 | 9 | band2->height = band1->height; | |
| 237 | 9 | band2->mb_size = band1->mb_size; | |
| 238 | 9 | band2->blk_size = band1->blk_size; | |
| 239 | 9 | band2->is_halfpel = band1->is_halfpel; | |
| 240 | 9 | band2->intra_base = band1->intra_base; | |
| 241 | 9 | band2->inter_base = band1->inter_base; | |
| 242 | 9 | band2->intra_scale = band1->intra_scale; | |
| 243 | 9 | band2->inter_scale = band1->inter_scale; | |
| 244 | 9 | band2->scan = band1->scan; | |
| 245 | 9 | band2->inv_transform = band1->inv_transform; | |
| 246 | 9 | band2->dc_transform = band1->dc_transform; | |
| 247 | 9 | band2->is_2d_trans = band1->is_2d_trans; | |
| 248 | 9 | band2->transform_size= band1->transform_size; | |
| 249 | } | ||
| 250 | |||
| 251 | /* reallocate internal structures if needed */ | ||
| 252 |
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9 | if (blk_size_changed) { |
| 253 | 1 | result = ff_ivi_init_tiles(ctx->planes, pic_conf.tile_width, | |
| 254 | 1 | pic_conf.tile_height); | |
| 255 |
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1 | if (result < 0) { |
| 256 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 257 | "Couldn't reallocate internal structures!\n"); | ||
| 258 | ✗ | return result; | |
| 259 | } | ||
| 260 | } | ||
| 261 | |||
| 262 |
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9 | if (ctx->gop_flags & 8) { |
| 263 | ✗ | if (get_bits(&ctx->gb, 3)) { | |
| 264 | ✗ | av_log(avctx, AV_LOG_ERROR, "Alignment bits are not zero!\n"); | |
| 265 | ✗ | return AVERROR_INVALIDDATA; | |
| 266 | } | ||
| 267 | |||
| 268 | ✗ | if (get_bits1(&ctx->gb)) | |
| 269 | ✗ | skip_bits(&ctx->gb, 24); /* skip transparency fill color */ | |
| 270 | } | ||
| 271 | |||
| 272 | 9 | align_get_bits(&ctx->gb); | |
| 273 | |||
| 274 | 9 | skip_bits(&ctx->gb, 23); /* FIXME: unknown meaning */ | |
| 275 | |||
| 276 | /* skip GOP extension if any */ | ||
| 277 |
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9 | if (get_bits1(&ctx->gb)) { |
| 278 | do { | ||
| 279 | ✗ | i = get_bits(&ctx->gb, 16); | |
| 280 | ✗ | } while (i & 0x8000); | |
| 281 | } | ||
| 282 | |||
| 283 | 9 | align_get_bits(&ctx->gb); | |
| 284 | |||
| 285 | 9 | return 0; | |
| 286 | } | ||
| 287 | |||
| 288 | |||
| 289 | /** | ||
| 290 | * Skip a header extension. | ||
| 291 | * | ||
| 292 | * @param[in,out] gb the GetBit context | ||
| 293 | */ | ||
| 294 | ✗ | static inline int skip_hdr_extension(GetBitContext *gb) | |
| 295 | { | ||
| 296 | int i, len; | ||
| 297 | |||
| 298 | do { | ||
| 299 | ✗ | len = get_bits(gb, 8); | |
| 300 | ✗ | if (8*len > get_bits_left(gb)) | |
| 301 | ✗ | return AVERROR_INVALIDDATA; | |
| 302 | ✗ | for (i = 0; i < len; i++) skip_bits(gb, 8); | |
| 303 | ✗ | } while(len); | |
| 304 | |||
| 305 | ✗ | return 0; | |
| 306 | } | ||
| 307 | |||
| 308 | |||
| 309 | /** | ||
| 310 | * Decode Indeo5 picture header. | ||
| 311 | * | ||
| 312 | * @param[in,out] ctx ptr to the decoder context | ||
| 313 | * @param[in] avctx ptr to the AVCodecContext | ||
| 314 | * @return result code: 0 = OK, -1 = error | ||
| 315 | */ | ||
| 316 | 134 | static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx) | |
| 317 | { | ||
| 318 | int ret; | ||
| 319 | |||
| 320 |
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134 | if (get_bits(&ctx->gb, 5) != 0x1F) { |
| 321 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n"); | |
| 322 | ✗ | return AVERROR_INVALIDDATA; | |
| 323 | } | ||
| 324 | |||
| 325 | 134 | ctx->prev_frame_type = ctx->frame_type; | |
| 326 | 134 | ctx->frame_type = get_bits(&ctx->gb, 3); | |
| 327 |
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134 | if (ctx->frame_type >= 5) { |
| 328 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d \n", ctx->frame_type); | |
| 329 | ✗ | ctx->frame_type = FRAMETYPE_INTRA; | |
| 330 | ✗ | return AVERROR_INVALIDDATA; | |
| 331 | } | ||
| 332 | |||
| 333 | 134 | ctx->frame_num = get_bits(&ctx->gb, 8); | |
| 334 | |||
| 335 |
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134 | if (ctx->frame_type == FRAMETYPE_INTRA) { |
| 336 |
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9 | if ((ret = decode_gop_header(ctx, avctx)) < 0) { |
| 337 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n"); | |
| 338 | ✗ | ctx->gop_invalid = 1; | |
| 339 | ✗ | return ret; | |
| 340 | } | ||
| 341 | 9 | ctx->gop_invalid = 0; | |
| 342 | } | ||
| 343 | |||
| 344 |
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134 | if (ctx->frame_type == FRAMETYPE_INTER_SCAL && !ctx->is_scalable) { |
| 345 | ✗ | av_log(avctx, AV_LOG_ERROR, "Scalable inter frame in non scalable stream\n"); | |
| 346 | ✗ | ctx->frame_type = FRAMETYPE_INTER; | |
| 347 | ✗ | return AVERROR_INVALIDDATA; | |
| 348 | } | ||
| 349 | |||
| 350 |
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134 | if (ctx->frame_type != FRAMETYPE_NULL) { |
| 351 | 133 | ctx->frame_flags = get_bits(&ctx->gb, 8); | |
| 352 | |||
| 353 |
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133 | ctx->pic_hdr_size = (ctx->frame_flags & 1) ? get_bits(&ctx->gb, 24) : 0; |
| 354 | |||
| 355 |
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133 | ctx->checksum = (ctx->frame_flags & 0x10) ? get_bits(&ctx->gb, 16) : 0; |
| 356 | |||
| 357 | /* skip unknown extension if any */ | ||
| 358 |
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133 | if (ctx->frame_flags & 0x20) |
| 359 | ✗ | skip_hdr_extension(&ctx->gb); /* XXX: untested */ | |
| 360 | |||
| 361 | /* decode macroblock huffman codebook */ | ||
| 362 | 133 | ret = ff_ivi_dec_huff_desc(&ctx->gb, ctx->frame_flags & 0x40, | |
| 363 | IVI_MB_HUFF, &ctx->mb_vlc, avctx); | ||
| 364 |
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133 | if (ret < 0) |
| 365 | ✗ | return ret; | |
| 366 | |||
| 367 | 133 | skip_bits(&ctx->gb, 3); /* FIXME: unknown meaning! */ | |
| 368 | } | ||
| 369 | |||
| 370 | 134 | align_get_bits(&ctx->gb); | |
| 371 | |||
| 372 | 134 | return 0; | |
| 373 | } | ||
| 374 | |||
| 375 | |||
| 376 | /** | ||
| 377 | * Decode Indeo5 band header. | ||
| 378 | * | ||
| 379 | * @param[in,out] ctx ptr to the decoder context | ||
| 380 | * @param[in,out] band ptr to the band descriptor | ||
| 381 | * @param[in] avctx ptr to the AVCodecContext | ||
| 382 | * @return result code: 0 = OK, -1 = error | ||
| 383 | */ | ||
| 384 | 399 | static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, | |
| 385 | AVCodecContext *avctx) | ||
| 386 | { | ||
| 387 | int i, ret; | ||
| 388 | uint8_t band_flags; | ||
| 389 | |||
| 390 | 399 | band_flags = get_bits(&ctx->gb, 8); | |
| 391 | |||
| 392 |
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399 | if (band_flags & 1) { |
| 393 | ✗ | band->is_empty = 1; | |
| 394 | ✗ | return 0; | |
| 395 | } | ||
| 396 | |||
| 397 |
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399 | band->data_size = (ctx->frame_flags & 0x80) ? get_bits(&ctx->gb, 24) : 0; |
| 398 | |||
| 399 | 399 | band->inherit_mv = band_flags & 2; | |
| 400 | 399 | band->inherit_qdelta = band_flags & 8; | |
| 401 | 399 | band->qdelta_present = band_flags & 4; | |
| 402 |
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399 | if (!band->qdelta_present) band->inherit_qdelta = 1; |
| 403 | |||
| 404 | /* decode rvmap probability corrections if any */ | ||
| 405 | 399 | band->num_corr = 0; /* there are no corrections */ | |
| 406 |
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399 | if (band_flags & 0x10) { |
| 407 | 252 | band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */ | |
| 408 |
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252 | if (band->num_corr > 61) { |
| 409 | ✗ | av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n", | |
| 410 | band->num_corr); | ||
| 411 | ✗ | return AVERROR_INVALIDDATA; | |
| 412 | } | ||
| 413 | |||
| 414 | /* read correction pairs */ | ||
| 415 |
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2316 | for (i = 0; i < band->num_corr * 2; i++) |
| 416 | 2064 | band->corr[i] = get_bits(&ctx->gb, 8); | |
| 417 | } | ||
| 418 | |||
| 419 | /* select appropriate rvmap table for this band */ | ||
| 420 |
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399 | band->rvmap_sel = (band_flags & 0x40) ? get_bits(&ctx->gb, 3) : 8; |
| 421 | |||
| 422 | /* decode block huffman codebook */ | ||
| 423 | 399 | ret = ff_ivi_dec_huff_desc(&ctx->gb, band_flags & 0x80, IVI_BLK_HUFF, | |
| 424 | &band->blk_vlc, avctx); | ||
| 425 |
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399 | if (ret < 0) |
| 426 | ✗ | return ret; | |
| 427 | |||
| 428 | 399 | band->checksum_present = get_bits1(&ctx->gb); | |
| 429 |
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399 | if (band->checksum_present) |
| 430 | 399 | band->checksum = get_bits(&ctx->gb, 16); | |
| 431 | |||
| 432 | 399 | band->glob_quant = get_bits(&ctx->gb, 5); | |
| 433 | |||
| 434 | /* skip unknown extension if any */ | ||
| 435 |
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399 | if (band_flags & 0x20) { /* XXX: untested */ |
| 436 | ✗ | align_get_bits(&ctx->gb); | |
| 437 | ✗ | skip_hdr_extension(&ctx->gb); | |
| 438 | } | ||
| 439 | |||
| 440 | 399 | align_get_bits(&ctx->gb); | |
| 441 | |||
| 442 | 399 | return 0; | |
| 443 | } | ||
| 444 | |||
| 445 | |||
| 446 | /** | ||
| 447 | * Decode info (block type, cbp, quant delta, motion vector) | ||
| 448 | * for all macroblocks in the current tile. | ||
| 449 | * | ||
| 450 | * @param[in,out] ctx ptr to the decoder context | ||
| 451 | * @param[in,out] band ptr to the band descriptor | ||
| 452 | * @param[in,out] tile ptr to the tile descriptor | ||
| 453 | * @param[in] avctx ptr to the AVCodecContext | ||
| 454 | * @return result code: 0 = OK, -1 = error | ||
| 455 | */ | ||
| 456 | 399 | static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, | |
| 457 | IVITile *tile, AVCodecContext *avctx) | ||
| 458 | { | ||
| 459 | int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, | ||
| 460 | mv_scale, blks_per_mb, s; | ||
| 461 | IVIMbInfo *mb, *ref_mb; | ||
| 462 | 399 | int row_offset = band->mb_size * band->pitch; | |
| 463 | |||
| 464 | 399 | mb = tile->mbs; | |
| 465 | 399 | ref_mb = tile->ref_mbs; | |
| 466 | 399 | offs = tile->ypos * band->pitch + tile->xpos; | |
| 467 | |||
| 468 |
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399 | if (!ref_mb && |
| 469 |
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133 | ((band->qdelta_present && band->inherit_qdelta) || band->inherit_mv)) |
| 470 | ✗ | return AVERROR_INVALIDDATA; | |
| 471 | |||
| 472 |
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399 | if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) { |
| 473 | ✗ | av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches parameters %d\n", | |
| 474 | ✗ | tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)); | |
| 475 | ✗ | return AVERROR_INVALIDDATA; | |
| 476 | } | ||
| 477 | |||
| 478 | /* scale factor for motion vectors */ | ||
| 479 | 399 | mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3); | |
| 480 | 399 | mv_x = mv_y = 0; | |
| 481 | |||
| 482 |
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5187 | for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) { |
| 483 | 4788 | mb_offset = offs; | |
| 484 | |||
| 485 |
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76608 | for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) { |
| 486 | 71820 | mb->xpos = x; | |
| 487 | 71820 | mb->ypos = y; | |
| 488 | 71820 | mb->buf_offs = mb_offset; | |
| 489 | |||
| 490 |
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71820 | if (get_bits1(&ctx->gb)) { |
| 491 |
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27025 | if (ctx->frame_type == FRAMETYPE_INTRA) { |
| 492 | ✗ | av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n"); | |
| 493 | ✗ | return AVERROR_INVALIDDATA; | |
| 494 | } | ||
| 495 | 27025 | mb->type = 1; /* empty macroblocks are always INTER */ | |
| 496 | 27025 | mb->cbp = 0; /* all blocks are empty */ | |
| 497 | |||
| 498 | 27025 | mb->q_delta = 0; | |
| 499 |
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27025 | if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) { |
| 500 | ✗ | mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 501 | IVI_VLC_BITS, 1); | ||
| 502 | ✗ | mb->q_delta = IVI_TOSIGNED(mb->q_delta); | |
| 503 | } | ||
| 504 | |||
| 505 | 27025 | mb->mv_x = mb->mv_y = 0; /* no motion vector coded */ | |
| 506 |
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27025 | if (band->inherit_mv && ref_mb){ |
| 507 | /* motion vector inheritance */ | ||
| 508 |
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19295 | if (mv_scale) { |
| 509 | 19295 | mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); | |
| 510 | 19295 | mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); | |
| 511 | } else { | ||
| 512 | ✗ | mb->mv_x = ref_mb->mv_x; | |
| 513 | ✗ | mb->mv_y = ref_mb->mv_y; | |
| 514 | } | ||
| 515 | } | ||
| 516 | } else { | ||
| 517 |
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44795 | if (band->inherit_mv && ref_mb) { |
| 518 | 28585 | mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */ | |
| 519 |
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16210 | } else if (ctx->frame_type == FRAMETYPE_INTRA) { |
| 520 | 1620 | mb->type = 0; /* mb_type is always INTRA for intra-frames */ | |
| 521 | } else { | ||
| 522 | 14590 | mb->type = get_bits1(&ctx->gb); | |
| 523 | } | ||
| 524 | |||
| 525 |
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44795 | blks_per_mb = band->mb_size != band->blk_size ? 4 : 1; |
| 526 | 44795 | mb->cbp = get_bits(&ctx->gb, blks_per_mb); | |
| 527 | |||
| 528 | 44795 | mb->q_delta = 0; | |
| 529 |
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44795 | if (band->qdelta_present) { |
| 530 | ✗ | if (band->inherit_qdelta) { | |
| 531 | ✗ | if (ref_mb) mb->q_delta = ref_mb->q_delta; | |
| 532 | ✗ | } else if (mb->cbp || (!band->plane && !band->band_num && | |
| 533 | ✗ | (ctx->frame_flags & 8))) { | |
| 534 | ✗ | mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 535 | IVI_VLC_BITS, 1); | ||
| 536 | ✗ | mb->q_delta = IVI_TOSIGNED(mb->q_delta); | |
| 537 | } | ||
| 538 | } | ||
| 539 | |||
| 540 |
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44795 | if (!mb->type) { |
| 541 | 13239 | mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */ | |
| 542 | } else { | ||
| 543 |
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31556 | if (band->inherit_mv && ref_mb){ |
| 544 | /* motion vector inheritance */ | ||
| 545 |
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19759 | if (mv_scale) { |
| 546 | 19759 | mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale); | |
| 547 | 19759 | mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale); | |
| 548 | } else { | ||
| 549 | ✗ | mb->mv_x = ref_mb->mv_x; | |
| 550 | ✗ | mb->mv_y = ref_mb->mv_y; | |
| 551 | } | ||
| 552 | } else { | ||
| 553 | /* decode motion vector deltas */ | ||
| 554 | 11797 | mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 555 | IVI_VLC_BITS, 1); | ||
| 556 | 11797 | mv_y += IVI_TOSIGNED(mv_delta); | |
| 557 | 11797 | mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table, | |
| 558 | IVI_VLC_BITS, 1); | ||
| 559 | 11797 | mv_x += IVI_TOSIGNED(mv_delta); | |
| 560 | 11797 | mb->mv_x = mv_x; | |
| 561 | 11797 | mb->mv_y = mv_y; | |
| 562 | } | ||
| 563 | } | ||
| 564 | } | ||
| 565 | |||
| 566 | 71820 | s= band->is_halfpel; | |
| 567 |
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71820 | if (mb->type) |
| 568 |
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58581 | if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 || |
| 569 | 58581 | x + ((mb->mv_x+s)>>s) + band->mb_size - 1 | |
| 570 |
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58581 | + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize - 1) { |
| 571 | ✗ | av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y); | |
| 572 | ✗ | return AVERROR_INVALIDDATA; | |
| 573 | } | ||
| 574 | |||
| 575 | 71820 | mb++; | |
| 576 |
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71820 | if (ref_mb) |
| 577 | 47880 | ref_mb++; | |
| 578 | 71820 | mb_offset += band->mb_size; | |
| 579 | } | ||
| 580 | |||
| 581 | 4788 | offs += row_offset; | |
| 582 | } | ||
| 583 | |||
| 584 | 399 | align_get_bits(&ctx->gb); | |
| 585 | |||
| 586 | 399 | return 0; | |
| 587 | } | ||
| 588 | |||
| 589 | |||
| 590 | /** | ||
| 591 | * Switch buffers. | ||
| 592 | * | ||
| 593 | * @param[in,out] ctx ptr to the decoder context | ||
| 594 | */ | ||
| 595 | 134 | static void switch_buffers(IVI45DecContext *ctx) | |
| 596 | { | ||
| 597 |
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134 | switch (ctx->prev_frame_type) { |
| 598 | 133 | case FRAMETYPE_INTRA: | |
| 599 | case FRAMETYPE_INTER: | ||
| 600 | 133 | ctx->buf_switch ^= 1; | |
| 601 | 133 | ctx->dst_buf = ctx->buf_switch; | |
| 602 | 133 | ctx->ref_buf = ctx->buf_switch ^ 1; | |
| 603 | 133 | break; | |
| 604 | ✗ | case FRAMETYPE_INTER_SCAL: | |
| 605 | ✗ | if (!ctx->inter_scal) { | |
| 606 | ✗ | ctx->ref2_buf = 2; | |
| 607 | ✗ | ctx->inter_scal = 1; | |
| 608 | } | ||
| 609 | ✗ | FFSWAP(int, ctx->dst_buf, ctx->ref2_buf); | |
| 610 | ✗ | ctx->ref_buf = ctx->ref2_buf; | |
| 611 | ✗ | break; | |
| 612 | ✗ | case FRAMETYPE_INTER_NOREF: | |
| 613 | ✗ | break; | |
| 614 | } | ||
| 615 | |||
| 616 |
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134 | switch (ctx->frame_type) { |
| 617 | 9 | case FRAMETYPE_INTRA: | |
| 618 | 9 | ctx->buf_switch = 0; | |
| 619 | av_fallthrough; | ||
| 620 | 133 | case FRAMETYPE_INTER: | |
| 621 | 133 | ctx->inter_scal = 0; | |
| 622 | 133 | ctx->dst_buf = ctx->buf_switch; | |
| 623 | 133 | ctx->ref_buf = ctx->buf_switch ^ 1; | |
| 624 | 133 | break; | |
| 625 | 1 | case FRAMETYPE_INTER_SCAL: | |
| 626 | case FRAMETYPE_INTER_NOREF: | ||
| 627 | case FRAMETYPE_NULL: | ||
| 628 | 1 | break; | |
| 629 | } | ||
| 630 | 134 | } | |
| 631 | |||
| 632 | |||
| 633 | 268 | static int is_nonnull_frame(IVI45DecContext *ctx) | |
| 634 | { | ||
| 635 | 268 | return ctx->frame_type != FRAMETYPE_NULL; | |
| 636 | } | ||
| 637 | |||
| 638 | |||
| 639 | /** | ||
| 640 | * Initialize Indeo5 decoder. | ||
| 641 | */ | ||
| 642 | 2 | static av_cold int decode_init(AVCodecContext *avctx) | |
| 643 | { | ||
| 644 | 2 | IVI45DecContext *ctx = avctx->priv_data; | |
| 645 | int result; | ||
| 646 | |||
| 647 | 2 | ctx->gop_invalid = 1; | |
| 648 | |||
| 649 | 2 | ff_ivi_init_static_vlc(); | |
| 650 | |||
| 651 | /* copy rvmap tables in our context so we can apply changes to them */ | ||
| 652 | 2 | memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs)); | |
| 653 | |||
| 654 | /* set the initial picture layout according to the basic profile: | ||
| 655 | there is only one band per plane (no scalability), only one tile (no local decoding) | ||
| 656 | and picture format = YVU9 */ | ||
| 657 | 2 | ctx->pic_conf.pic_width = avctx->width; | |
| 658 | 2 | ctx->pic_conf.pic_height = avctx->height; | |
| 659 | 2 | ctx->pic_conf.chroma_width = (avctx->width + 3) >> 2; | |
| 660 | 2 | ctx->pic_conf.chroma_height = (avctx->height + 3) >> 2; | |
| 661 | 2 | ctx->pic_conf.tile_width = avctx->width; | |
| 662 | 2 | ctx->pic_conf.tile_height = avctx->height; | |
| 663 | 2 | ctx->pic_conf.luma_bands = ctx->pic_conf.chroma_bands = 1; | |
| 664 | |||
| 665 | 2 | result = ff_ivi_init_planes(avctx, ctx->planes, &ctx->pic_conf, 0); | |
| 666 |
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2 | if (result) { |
| 667 | ✗ | av_log(avctx, AV_LOG_ERROR, "Couldn't allocate color planes!\n"); | |
| 668 | ✗ | return AVERROR_INVALIDDATA; | |
| 669 | } | ||
| 670 | |||
| 671 | 2 | ctx->buf_switch = 0; | |
| 672 | 2 | ctx->inter_scal = 0; | |
| 673 | |||
| 674 | 2 | ctx->decode_pic_hdr = decode_pic_hdr; | |
| 675 | 2 | ctx->decode_band_hdr = decode_band_hdr; | |
| 676 | 2 | ctx->decode_mb_info = decode_mb_info; | |
| 677 | 2 | ctx->switch_buffers = switch_buffers; | |
| 678 | 2 | ctx->is_nonnull_frame = is_nonnull_frame; | |
| 679 | |||
| 680 | 2 | ctx->is_indeo4 = 0; | |
| 681 | |||
| 682 | 2 | avctx->pix_fmt = AV_PIX_FMT_YUV410P; | |
| 683 | |||
| 684 | 2 | return 0; | |
| 685 | } | ||
| 686 | |||
| 687 | const FFCodec ff_indeo5_decoder = { | ||
| 688 | .p.name = "indeo5", | ||
| 689 | CODEC_LONG_NAME("Intel Indeo Video Interactive 5"), | ||
| 690 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 691 | .p.id = AV_CODEC_ID_INDEO5, | ||
| 692 | .priv_data_size = sizeof(IVI45DecContext), | ||
| 693 | .init = decode_init, | ||
| 694 | .close = ff_ivi_decode_close, | ||
| 695 | FF_CODEC_DECODE_CB(ff_ivi_decode_frame), | ||
| 696 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
| 697 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 698 | }; | ||
| 699 |