diff options
Diffstat (limited to 'ffmpeg1/libavcodec/intelh263dec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/intelh263dec.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/ffmpeg1/libavcodec/intelh263dec.c b/ffmpeg1/libavcodec/intelh263dec.c deleted file mode 100644 index ac2695e..0000000 --- a/ffmpeg1/libavcodec/intelh263dec.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * H.263i decoder - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "mpegvideo.h" -#include "h263.h" - -/* don't understand why they choose a different header ! */ -int ff_intel_h263_decode_picture_header(MpegEncContext *s) -{ - int format; - - /* picture header */ - if (get_bits_long(&s->gb, 22) != 0x20) { - av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n"); - return -1; - } - s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */ - - if (get_bits1(&s->gb) != 1) { - av_log(s->avctx, AV_LOG_ERROR, "Bad marker\n"); - return -1; /* marker */ - } - if (get_bits1(&s->gb) != 0) { - av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n"); - return -1; /* h263 id */ - } - skip_bits1(&s->gb); /* split screen off */ - skip_bits1(&s->gb); /* camera off */ - skip_bits1(&s->gb); /* freeze picture release off */ - - format = get_bits(&s->gb, 3); - if (format == 0 || format == 6) { - av_log(s->avctx, AV_LOG_ERROR, "Intel H263 free format not supported\n"); - return -1; - } - s->h263_plus = 0; - - s->pict_type = AV_PICTURE_TYPE_I + get_bits1(&s->gb); - - s->h263_long_vectors = get_bits1(&s->gb); - - if (get_bits1(&s->gb) != 0) { - av_log(s->avctx, AV_LOG_ERROR, "SAC not supported\n"); - return -1; /* SAC: off */ - } - s->obmc= get_bits1(&s->gb); - s->unrestricted_mv = s->obmc || s->h263_long_vectors; - s->pb_frame = get_bits1(&s->gb); - - if (format < 6) { - s->width = ff_h263_format[format][0]; - s->height = ff_h263_format[format][1]; - s->avctx->sample_aspect_ratio.num = 12; - s->avctx->sample_aspect_ratio.den = 11; - } else { - format = get_bits(&s->gb, 3); - if(format == 0 || format == 7){ - av_log(s->avctx, AV_LOG_ERROR, "Wrong Intel H263 format\n"); - return -1; - } - if(get_bits(&s->gb, 2)) - av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n"); - s->loop_filter = get_bits1(&s->gb) * !s->avctx->lowres; - if(get_bits1(&s->gb)) - av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n"); - if(get_bits1(&s->gb)) - s->pb_frame = 2; - if(get_bits(&s->gb, 5)) - av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n"); - if(get_bits(&s->gb, 5) != 1) - av_log(s->avctx, AV_LOG_ERROR, "Invalid marker\n"); - } - if(format == 6){ - int ar = get_bits(&s->gb, 4); - skip_bits(&s->gb, 9); // display width - skip_bits1(&s->gb); - skip_bits(&s->gb, 9); // display height - if(ar == 15){ - s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 8); // aspect ratio - width - s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 8); // aspect ratio - height - } else { - s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[ar]; - } - if (s->avctx->sample_aspect_ratio.num == 0) - av_log(s->avctx, AV_LOG_ERROR, "Invalid aspect ratio.\n"); - } - - s->chroma_qscale= s->qscale = get_bits(&s->gb, 5); - skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */ - - if(s->pb_frame){ - skip_bits(&s->gb, 3); //temporal reference for B-frame - skip_bits(&s->gb, 2); //dbquant - } - - /* PEI */ - while (get_bits1(&s->gb) != 0) { - skip_bits(&s->gb, 8); - } - s->f_code = 1; - - s->y_dc_scale_table= - s->c_dc_scale_table= ff_mpeg1_dc_scale_table; - - ff_h263_show_pict_info(s); - - return 0; -} - -AVCodec ff_h263i_decoder = { - .name = "h263i", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_H263I, - .priv_data_size = sizeof(MpegEncContext), - .init = ff_h263_decode_init, - .close = ff_h263_decode_end, - .decode = ff_h263_decode_frame, - .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Intel H.263"), - .pix_fmts = ff_pixfmt_list_420, -}; |