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00030 #define ALT_BITSTREAM_READER_LE
00031 #include "avcodec.h"
00032 #include "get_bits.h"
00033 #include "dsputil.h"
00034 #include "ivi_dsp.h"
00035 #include "ivi_common.h"
00036 #include "indeo5data.h"
00037
00041 enum {
00042 FRAMETYPE_INTRA = 0,
00043 FRAMETYPE_INTER = 1,
00044 FRAMETYPE_INTER_SCAL = 2,
00045 FRAMETYPE_INTER_NOREF = 3,
00046 FRAMETYPE_NULL = 4
00047 };
00048
00049 #define IVI5_PIC_SIZE_ESC 15
00050
00051 #define IVI5_IS_PROTECTED 0x20
00052
00053 typedef struct {
00054 GetBitContext gb;
00055 AVFrame frame;
00056 RVMapDesc rvmap_tabs[9];
00057 IVIPlaneDesc planes[3];
00058 const uint8_t *frame_data;
00059 int buf_switch;
00060 int inter_scal;
00061 int dst_buf;
00062 int ref_buf;
00063 int ref2_buf;
00064 uint32_t frame_size;
00065 int frame_type;
00066 int prev_frame_type;
00067 int frame_num;
00068 uint32_t pic_hdr_size;
00069 uint8_t frame_flags;
00070 uint16_t checksum;
00071
00072 IVIHuffTab mb_vlc;
00073
00074 uint16_t gop_hdr_size;
00075 uint8_t gop_flags;
00076 int is_scalable;
00077 uint32_t lock_word;
00078 IVIPicConfig pic_conf;
00079 } IVI5DecContext;
00080
00081
00091 static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx)
00092 {
00093 int result, i, p, tile_size, pic_size_indx, mb_size, blk_size;
00094 int quant_mat, blk_size_changed = 0;
00095 IVIBandDesc *band, *band1, *band2;
00096 IVIPicConfig pic_conf;
00097
00098 ctx->gop_flags = get_bits(&ctx->gb, 8);
00099
00100 ctx->gop_hdr_size = (ctx->gop_flags & 1) ? get_bits(&ctx->gb, 16) : 0;
00101
00102 if (ctx->gop_flags & IVI5_IS_PROTECTED)
00103 ctx->lock_word = get_bits_long(&ctx->gb, 32);
00104
00105 tile_size = (ctx->gop_flags & 0x40) ? 64 << get_bits(&ctx->gb, 2) : 0;
00106 if (tile_size > 256) {
00107 av_log(avctx, AV_LOG_ERROR, "Invalid tile size: %d\n", tile_size);
00108 return -1;
00109 }
00110
00111
00112
00113 pic_conf.luma_bands = get_bits(&ctx->gb, 2) * 3 + 1;
00114 pic_conf.chroma_bands = get_bits1(&ctx->gb) * 3 + 1;
00115 ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
00116 if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
00117 av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
00118 pic_conf.luma_bands, pic_conf.chroma_bands);
00119 return -1;
00120 }
00121
00122 pic_size_indx = get_bits(&ctx->gb, 4);
00123 if (pic_size_indx == IVI5_PIC_SIZE_ESC) {
00124 pic_conf.pic_height = get_bits(&ctx->gb, 13);
00125 pic_conf.pic_width = get_bits(&ctx->gb, 13);
00126 } else {
00127 pic_conf.pic_height = ivi5_common_pic_sizes[pic_size_indx * 2 + 1] << 2;
00128 pic_conf.pic_width = ivi5_common_pic_sizes[pic_size_indx * 2 ] << 2;
00129 }
00130
00131 if (ctx->gop_flags & 2) {
00132 av_log(avctx, AV_LOG_ERROR, "YV12 picture format not supported!\n");
00133 return -1;
00134 }
00135
00136 pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
00137 pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
00138
00139 if (!tile_size) {
00140 pic_conf.tile_height = pic_conf.pic_height;
00141 pic_conf.tile_width = pic_conf.pic_width;
00142 } else {
00143 pic_conf.tile_height = pic_conf.tile_width = tile_size;
00144 }
00145
00146
00147 if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
00148 result = ff_ivi_init_planes(ctx->planes, &pic_conf);
00149 if (result) {
00150 av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
00151 return -1;
00152 }
00153 ctx->pic_conf = pic_conf;
00154 blk_size_changed = 1;
00155 }
00156
00157 for (p = 0; p <= 1; p++) {
00158 for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
00159 band = &ctx->planes[p].bands[i];
00160
00161 band->is_halfpel = get_bits1(&ctx->gb);
00162
00163 mb_size = get_bits1(&ctx->gb);
00164 blk_size = 8 >> get_bits1(&ctx->gb);
00165 mb_size = blk_size << !mb_size;
00166
00167 blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size;
00168 if (blk_size_changed) {
00169 band->mb_size = mb_size;
00170 band->blk_size = blk_size;
00171 }
00172
00173 if (get_bits1(&ctx->gb)) {
00174 av_log(avctx, AV_LOG_ERROR, "Extended transform info encountered!\n");
00175 return -1;
00176 }
00177
00178
00179 switch ((p << 2) + i) {
00180 case 0:
00181 band->inv_transform = ff_ivi_inverse_slant_8x8;
00182 band->dc_transform = ff_ivi_dc_slant_2d;
00183 band->scan = ff_zigzag_direct;
00184 break;
00185
00186 case 1:
00187 band->inv_transform = ff_ivi_row_slant8;
00188 band->dc_transform = ff_ivi_dc_row_slant;
00189 band->scan = ff_ivi_vertical_scan_8x8;
00190 break;
00191
00192 case 2:
00193 band->inv_transform = ff_ivi_col_slant8;
00194 band->dc_transform = ff_ivi_dc_col_slant;
00195 band->scan = ff_ivi_horizontal_scan_8x8;
00196 break;
00197
00198 case 3:
00199 band->inv_transform = ff_ivi_put_pixels_8x8;
00200 band->dc_transform = ff_ivi_put_dc_pixel_8x8;
00201 band->scan = ff_ivi_horizontal_scan_8x8;
00202 break;
00203
00204 case 4:
00205 band->inv_transform = ff_ivi_inverse_slant_4x4;
00206 band->dc_transform = ff_ivi_dc_slant_2d;
00207 band->scan = ff_ivi_direct_scan_4x4;
00208 break;
00209 }
00210
00211 band->is_2d_trans = band->inv_transform == ff_ivi_inverse_slant_8x8 ||
00212 band->inv_transform == ff_ivi_inverse_slant_4x4;
00213
00214
00215 if (!p) {
00216 quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0;
00217 } else {
00218 quant_mat = 5;
00219 }
00220
00221 if (band->blk_size == 8) {
00222 band->intra_base = &ivi5_base_quant_8x8_intra[quant_mat][0];
00223 band->inter_base = &ivi5_base_quant_8x8_inter[quant_mat][0];
00224 band->intra_scale = &ivi5_scale_quant_8x8_intra[quant_mat][0];
00225 band->inter_scale = &ivi5_scale_quant_8x8_inter[quant_mat][0];
00226 } else {
00227 band->intra_base = ivi5_base_quant_4x4_intra;
00228 band->inter_base = ivi5_base_quant_4x4_inter;
00229 band->intra_scale = ivi5_scale_quant_4x4_intra;
00230 band->inter_scale = ivi5_scale_quant_4x4_inter;
00231 }
00232
00233 if (get_bits(&ctx->gb, 2)) {
00234 av_log(avctx, AV_LOG_ERROR, "End marker missing!\n");
00235 return -1;
00236 }
00237 }
00238 }
00239
00240
00241 for (i = 0; i < pic_conf.chroma_bands; i++) {
00242 band1 = &ctx->planes[1].bands[i];
00243 band2 = &ctx->planes[2].bands[i];
00244
00245 band2->width = band1->width;
00246 band2->height = band1->height;
00247 band2->mb_size = band1->mb_size;
00248 band2->blk_size = band1->blk_size;
00249 band2->is_halfpel = band1->is_halfpel;
00250 band2->intra_base = band1->intra_base;
00251 band2->inter_base = band1->inter_base;
00252 band2->intra_scale = band1->intra_scale;
00253 band2->inter_scale = band1->inter_scale;
00254 band2->scan = band1->scan;
00255 band2->inv_transform = band1->inv_transform;
00256 band2->dc_transform = band1->dc_transform;
00257 band2->is_2d_trans = band1->is_2d_trans;
00258 }
00259
00260
00261 if (blk_size_changed) {
00262 result = ff_ivi_init_tiles(ctx->planes, pic_conf.tile_width,
00263 pic_conf.tile_height);
00264 if (result) {
00265 av_log(avctx, AV_LOG_ERROR,
00266 "Couldn't reallocate internal structures!\n");
00267 return -1;
00268 }
00269 }
00270
00271 if (ctx->gop_flags & 8) {
00272 if (get_bits(&ctx->gb, 3)) {
00273 av_log(avctx, AV_LOG_ERROR, "Alignment bits are not zero!\n");
00274 return -1;
00275 }
00276
00277 if (get_bits1(&ctx->gb))
00278 skip_bits_long(&ctx->gb, 24);
00279 }
00280
00281 align_get_bits(&ctx->gb);
00282
00283 skip_bits(&ctx->gb, 23);
00284
00285
00286 if (get_bits1(&ctx->gb)) {
00287 do {
00288 i = get_bits(&ctx->gb, 16);
00289 } while (i & 0x8000);
00290 }
00291
00292 align_get_bits(&ctx->gb);
00293
00294 return 0;
00295 }
00296
00297
00303 static inline void skip_hdr_extension(GetBitContext *gb)
00304 {
00305 int i, len;
00306
00307 do {
00308 len = get_bits(gb, 8);
00309 for (i = 0; i < len; i++) skip_bits(gb, 8);
00310 } while(len);
00311 }
00312
00313
00321 static int decode_pic_hdr(IVI5DecContext *ctx, AVCodecContext *avctx)
00322 {
00323 if (get_bits(&ctx->gb, 5) != 0x1F) {
00324 av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
00325 return -1;
00326 }
00327
00328 ctx->prev_frame_type = ctx->frame_type;
00329 ctx->frame_type = get_bits(&ctx->gb, 3);
00330 if (ctx->frame_type >= 5) {
00331 av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d \n", ctx->frame_type);
00332 return -1;
00333 }
00334
00335 ctx->frame_num = get_bits(&ctx->gb, 8);
00336
00337 if (ctx->frame_type == FRAMETYPE_INTRA) {
00338 if (decode_gop_header(ctx, avctx))
00339 return -1;
00340 }
00341
00342 if (ctx->frame_type != FRAMETYPE_NULL) {
00343 ctx->frame_flags = get_bits(&ctx->gb, 8);
00344
00345 ctx->pic_hdr_size = (ctx->frame_flags & 1) ? get_bits_long(&ctx->gb, 24) : 0;
00346
00347 ctx->checksum = (ctx->frame_flags & 0x10) ? get_bits(&ctx->gb, 16) : 0;
00348
00349
00350 if (ctx->frame_flags & 0x20)
00351 skip_hdr_extension(&ctx->gb);
00352
00353
00354 if (ff_ivi_dec_huff_desc(&ctx->gb, ctx->frame_flags & 0x40, IVI_MB_HUFF, &ctx->mb_vlc, avctx))
00355 return -1;
00356
00357 skip_bits(&ctx->gb, 3);
00358 }
00359
00360 align_get_bits(&ctx->gb);
00361
00362 return 0;
00363 }
00364
00365
00374 static int decode_band_hdr(IVI5DecContext *ctx, IVIBandDesc *band,
00375 AVCodecContext *avctx)
00376 {
00377 int i;
00378 uint8_t band_flags;
00379
00380 band_flags = get_bits(&ctx->gb, 8);
00381
00382 if (band_flags & 1) {
00383 band->is_empty = 1;
00384 return 0;
00385 }
00386
00387 band->data_size = (ctx->frame_flags & 0x80) ? get_bits_long(&ctx->gb, 24) : 0;
00388
00389 band->inherit_mv = band_flags & 2;
00390 band->inherit_qdelta = band_flags & 8;
00391 band->qdelta_present = band_flags & 4;
00392 if (!band->qdelta_present) band->inherit_qdelta = 1;
00393
00394
00395 band->num_corr = 0;
00396 if (band_flags & 0x10) {
00397 band->num_corr = get_bits(&ctx->gb, 8);
00398 if (band->num_corr > 61) {
00399 av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
00400 band->num_corr);
00401 return -1;
00402 }
00403
00404
00405 for (i = 0; i < band->num_corr * 2; i++)
00406 band->corr[i] = get_bits(&ctx->gb, 8);
00407 }
00408
00409
00410 band->rvmap_sel = (band_flags & 0x40) ? get_bits(&ctx->gb, 3) : 8;
00411
00412
00413 if (ff_ivi_dec_huff_desc(&ctx->gb, band_flags & 0x80, IVI_BLK_HUFF, &band->blk_vlc, avctx))
00414 return -1;
00415
00416 band->checksum_present = get_bits1(&ctx->gb);
00417 if (band->checksum_present)
00418 band->checksum = get_bits(&ctx->gb, 16);
00419
00420 band->glob_quant = get_bits(&ctx->gb, 5);
00421
00422
00423 if (band_flags & 0x20) {
00424 align_get_bits(&ctx->gb);
00425 skip_hdr_extension(&ctx->gb);
00426 }
00427
00428 align_get_bits(&ctx->gb);
00429
00430 return 0;
00431 }
00432
00433
00444 static int decode_mb_info(IVI5DecContext *ctx, IVIBandDesc *band,
00445 IVITile *tile, AVCodecContext *avctx)
00446 {
00447 int x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
00448 mv_scale, blks_per_mb;
00449 IVIMbInfo *mb, *ref_mb;
00450 int row_offset = band->mb_size * band->pitch;
00451
00452 mb = tile->mbs;
00453 ref_mb = tile->ref_mbs;
00454 offs = tile->ypos * band->pitch + tile->xpos;
00455
00456
00457 mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
00458 mv_x = mv_y = 0;
00459
00460 for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) {
00461 mb_offset = offs;
00462
00463 for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) {
00464 mb->xpos = x;
00465 mb->ypos = y;
00466 mb->buf_offs = mb_offset;
00467
00468 if (get_bits1(&ctx->gb)) {
00469 if (ctx->frame_type == FRAMETYPE_INTRA) {
00470 av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
00471 return -1;
00472 }
00473 mb->type = 1;
00474 mb->cbp = 0;
00475
00476 mb->q_delta = 0;
00477 if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) {
00478 mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
00479 IVI_VLC_BITS, 1);
00480 mb->q_delta = IVI_TOSIGNED(mb->q_delta);
00481 }
00482
00483 mb->mv_x = mb->mv_y = 0;
00484 if (band->inherit_mv){
00485
00486 if (mv_scale) {
00487 mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
00488 mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
00489 } else {
00490 mb->mv_x = ref_mb->mv_x;
00491 mb->mv_y = ref_mb->mv_y;
00492 }
00493 }
00494 } else {
00495 if (band->inherit_mv) {
00496 mb->type = ref_mb->type;
00497 } else if (ctx->frame_type == FRAMETYPE_INTRA) {
00498 mb->type = 0;
00499 } else {
00500 mb->type = get_bits1(&ctx->gb);
00501 }
00502
00503 blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
00504 mb->cbp = get_bits(&ctx->gb, blks_per_mb);
00505
00506 mb->q_delta = 0;
00507 if (band->qdelta_present) {
00508 if (band->inherit_qdelta) {
00509 if (ref_mb) mb->q_delta = ref_mb->q_delta;
00510 } else if (mb->cbp || (!band->plane && !band->band_num &&
00511 (ctx->frame_flags & 8))) {
00512 mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
00513 IVI_VLC_BITS, 1);
00514 mb->q_delta = IVI_TOSIGNED(mb->q_delta);
00515 }
00516 }
00517
00518 if (!mb->type) {
00519 mb->mv_x = mb->mv_y = 0;
00520 } else {
00521 if (band->inherit_mv){
00522
00523 if (mv_scale) {
00524 mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
00525 mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
00526 } else {
00527 mb->mv_x = ref_mb->mv_x;
00528 mb->mv_y = ref_mb->mv_y;
00529 }
00530 } else {
00531
00532 mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
00533 IVI_VLC_BITS, 1);
00534 mv_y += IVI_TOSIGNED(mv_delta);
00535 mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
00536 IVI_VLC_BITS, 1);
00537 mv_x += IVI_TOSIGNED(mv_delta);
00538 mb->mv_x = mv_x;
00539 mb->mv_y = mv_y;
00540 }
00541 }
00542 }
00543
00544 mb++;
00545 if (ref_mb)
00546 ref_mb++;
00547 mb_offset += band->mb_size;
00548 }
00549
00550 offs += row_offset;
00551 }
00552
00553 align_get_bits(&ctx->gb);
00554
00555 return 0;
00556 }
00557
00558
00567 static int decode_band(IVI5DecContext *ctx, int plane_num,
00568 IVIBandDesc *band, AVCodecContext *avctx)
00569 {
00570 int result, i, t, idx1, idx2, pos;
00571 IVITile *tile;
00572
00573 band->buf = band->bufs[ctx->dst_buf];
00574 band->ref_buf = band->bufs[ctx->ref_buf];
00575 band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
00576
00577 result = decode_band_hdr(ctx, band, avctx);
00578 if (result) {
00579 av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",
00580 result);
00581 return -1;
00582 }
00583
00584 if (band->is_empty) {
00585 av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
00586 return -1;
00587 }
00588
00589 band->rv_map = &ctx->rvmap_tabs[band->rvmap_sel];
00590
00591
00592 for (i = 0; i < band->num_corr; i++) {
00593 idx1 = band->corr[i*2];
00594 idx2 = band->corr[i*2+1];
00595 FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
00596 FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
00597 }
00598
00599 pos = get_bits_count(&ctx->gb);
00600
00601 for (t = 0; t < band->num_tiles; t++) {
00602 tile = &band->tiles[t];
00603
00604 tile->is_empty = get_bits1(&ctx->gb);
00605 if (tile->is_empty) {
00606 ff_ivi_process_empty_tile(avctx, band, tile,
00607 (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
00608 } else {
00609 tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);
00610
00611 result = decode_mb_info(ctx, band, tile, avctx);
00612 if (result < 0)
00613 break;
00614
00615 result = ff_ivi_decode_blocks(&ctx->gb, band, tile);
00616 if (result < 0 || (get_bits_count(&ctx->gb) - pos) >> 3 != tile->data_size) {
00617 av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n");
00618 break;
00619 }
00620 pos += tile->data_size << 3;
00621 }
00622 }
00623
00624
00625 for (i = band->num_corr-1; i >= 0; i--) {
00626 idx1 = band->corr[i*2];
00627 idx2 = band->corr[i*2+1];
00628 FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
00629 FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
00630 }
00631
00632 #if IVI_DEBUG
00633 if (band->checksum_present) {
00634 uint16_t chksum = ivi_calc_band_checksum(band);
00635 if (chksum != band->checksum) {
00636 av_log(avctx, AV_LOG_ERROR,
00637 "Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",
00638 band->plane, band->band_num, band->checksum, chksum);
00639 }
00640 }
00641 #endif
00642
00643 align_get_bits(&ctx->gb);
00644
00645 return result;
00646 }
00647
00648
00654 static void switch_buffers(IVI5DecContext *ctx)
00655 {
00656 switch (ctx->prev_frame_type) {
00657 case FRAMETYPE_INTRA:
00658 case FRAMETYPE_INTER:
00659 ctx->buf_switch ^= 1;
00660 ctx->dst_buf = ctx->buf_switch;
00661 ctx->ref_buf = ctx->buf_switch ^ 1;
00662 break;
00663 case FRAMETYPE_INTER_SCAL:
00664 if (!ctx->inter_scal) {
00665 ctx->ref2_buf = 2;
00666 ctx->inter_scal = 1;
00667 }
00668 FFSWAP(int, ctx->dst_buf, ctx->ref2_buf);
00669 ctx->ref_buf = ctx->ref2_buf;
00670 break;
00671 case FRAMETYPE_INTER_NOREF:
00672 break;
00673 }
00674
00675 switch (ctx->frame_type) {
00676 case FRAMETYPE_INTRA:
00677 ctx->buf_switch = 0;
00678
00679 case FRAMETYPE_INTER:
00680 ctx->inter_scal = 0;
00681 ctx->dst_buf = ctx->buf_switch;
00682 ctx->ref_buf = ctx->buf_switch ^ 1;
00683 break;
00684 case FRAMETYPE_INTER_SCAL:
00685 case FRAMETYPE_INTER_NOREF:
00686 case FRAMETYPE_NULL:
00687 break;
00688 }
00689 }
00690
00691
00695 static av_cold int decode_init(AVCodecContext *avctx)
00696 {
00697 IVI5DecContext *ctx = avctx->priv_data;
00698 int result;
00699
00700 ff_ivi_init_static_vlc();
00701
00702
00703 memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
00704
00705
00706
00707
00708 ctx->pic_conf.pic_width = avctx->width;
00709 ctx->pic_conf.pic_height = avctx->height;
00710 ctx->pic_conf.chroma_width = (avctx->width + 3) >> 2;
00711 ctx->pic_conf.chroma_height = (avctx->height + 3) >> 2;
00712 ctx->pic_conf.tile_width = avctx->width;
00713 ctx->pic_conf.tile_height = avctx->height;
00714 ctx->pic_conf.luma_bands = ctx->pic_conf.chroma_bands = 1;
00715
00716 result = ff_ivi_init_planes(ctx->planes, &ctx->pic_conf);
00717 if (result) {
00718 av_log(avctx, AV_LOG_ERROR, "Couldn't allocate color planes!\n");
00719 return -1;
00720 }
00721
00722 ctx->buf_switch = 0;
00723 ctx->inter_scal = 0;
00724
00725 avctx->pix_fmt = PIX_FMT_YUV410P;
00726
00727 return 0;
00728 }
00729
00730
00734 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
00735 AVPacket *avpkt)
00736 {
00737 IVI5DecContext *ctx = avctx->priv_data;
00738 const uint8_t *buf = avpkt->data;
00739 int buf_size = avpkt->size;
00740 int result, p, b;
00741
00742 init_get_bits(&ctx->gb, buf, buf_size * 8);
00743 ctx->frame_data = buf;
00744 ctx->frame_size = buf_size;
00745
00746 result = decode_pic_hdr(ctx, avctx);
00747 if (result) {
00748 av_log(avctx, AV_LOG_ERROR,
00749 "Error while decoding picture header: %d\n", result);
00750 return -1;
00751 }
00752
00753 if (ctx->gop_flags & IVI5_IS_PROTECTED) {
00754 av_log(avctx, AV_LOG_ERROR, "Password-protected clip!\n");
00755 return -1;
00756 }
00757
00758 switch_buffers(ctx);
00759
00760
00761
00762 if (ctx->frame_type != FRAMETYPE_NULL) {
00763 for (p = 0; p < 3; p++) {
00764 for (b = 0; b < ctx->planes[p].num_bands; b++) {
00765 result = decode_band(ctx, p, &ctx->planes[p].bands[b], avctx);
00766 if (result) {
00767 av_log(avctx, AV_LOG_ERROR,
00768 "Error while decoding band: %d, plane: %d\n", b, p);
00769 return -1;
00770 }
00771 }
00772 }
00773 }
00774
00775
00776
00777 if (ctx->frame.data[0])
00778 avctx->release_buffer(avctx, &ctx->frame);
00779
00780 ctx->frame.reference = 0;
00781 if (avctx->get_buffer(avctx, &ctx->frame) < 0) {
00782 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
00783 return -1;
00784 }
00785
00786 if (ctx->is_scalable) {
00787 ff_ivi_recompose53 (&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0], 4);
00788 } else {
00789 ff_ivi_output_plane(&ctx->planes[0], ctx->frame.data[0], ctx->frame.linesize[0]);
00790 }
00791
00792 ff_ivi_output_plane(&ctx->planes[2], ctx->frame.data[1], ctx->frame.linesize[1]);
00793 ff_ivi_output_plane(&ctx->planes[1], ctx->frame.data[2], ctx->frame.linesize[2]);
00794
00795 *data_size = sizeof(AVFrame);
00796 *(AVFrame*)data = ctx->frame;
00797
00798 return buf_size;
00799 }
00800
00801
00805 static av_cold int decode_close(AVCodecContext *avctx)
00806 {
00807 IVI5DecContext *ctx = avctx->priv_data;
00808
00809 ff_ivi_free_buffers(&ctx->planes[0]);
00810
00811 if (ctx->mb_vlc.cust_tab.table)
00812 free_vlc(&ctx->mb_vlc.cust_tab);
00813
00814 if (ctx->frame.data[0])
00815 avctx->release_buffer(avctx, &ctx->frame);
00816
00817 return 0;
00818 }
00819
00820
00821 AVCodec ff_indeo5_decoder = {
00822 .name = "indeo5",
00823 .type = AVMEDIA_TYPE_VIDEO,
00824 .id = CODEC_ID_INDEO5,
00825 .priv_data_size = sizeof(IVI5DecContext),
00826 .init = decode_init,
00827 .close = decode_close,
00828 .decode = decode_frame,
00829 .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 5"),
00830 };