diff options
Diffstat (limited to 'ffmpeg1/libavcodec/flvdec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/flvdec.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/ffmpeg1/libavcodec/flvdec.c b/ffmpeg1/libavcodec/flvdec.c deleted file mode 100644 index bb693d7..0000000 --- a/ffmpeg1/libavcodec/flvdec.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * FLV decoding. - * 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" -#include "flv.h" -#include "libavutil/imgutils.h" - -void ff_flv2_decode_ac_esc(GetBitContext *gb, int *level, int *run, int *last){ - int is11 = get_bits1(gb); - *last = get_bits1(gb); - *run = get_bits(gb, 6); - if(is11){ - *level = get_sbits(gb, 11); - } else { - *level = get_sbits(gb, 7); - } -} - -int ff_flv_decode_picture_header(MpegEncContext *s) -{ - int format, width, height; - - /* picture header */ - if (get_bits_long(&s->gb, 17) != 1) { - av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n"); - return AVERROR_INVALIDDATA; - } - format = get_bits(&s->gb, 5); - if (format != 0 && format != 1) { - av_log(s->avctx, AV_LOG_ERROR, "Bad picture format\n"); - return AVERROR_INVALIDDATA; - } - s->h263_flv = format+1; - s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */ - format = get_bits(&s->gb, 3); - switch (format) { - case 0: - width = get_bits(&s->gb, 8); - height = get_bits(&s->gb, 8); - break; - case 1: - width = get_bits(&s->gb, 16); - height = get_bits(&s->gb, 16); - break; - case 2: - width = 352; - height = 288; - break; - case 3: - width = 176; - height = 144; - break; - case 4: - width = 128; - height = 96; - break; - case 5: - width = 320; - height = 240; - break; - case 6: - width = 160; - height = 120; - break; - default: - width = height = 0; - break; - } - if(av_image_check_size(width, height, 0, s->avctx)) - return AVERROR(EINVAL); - s->width = width; - s->height = height; - - s->pict_type = AV_PICTURE_TYPE_I + get_bits(&s->gb, 2); - s->droppable = s->pict_type > AV_PICTURE_TYPE_P; - if (s->droppable) - s->pict_type = AV_PICTURE_TYPE_P; - - skip_bits1(&s->gb); /* deblocking flag */ - s->chroma_qscale= s->qscale = get_bits(&s->gb, 5); - - s->h263_plus = 0; - - s->unrestricted_mv = 1; - s->h263_long_vectors = 0; - - /* PEI */ - while (get_bits1(&s->gb) != 0) { - skip_bits(&s->gb, 8); - } - s->f_code = 1; - - if(s->avctx->debug & FF_DEBUG_PICT_INFO){ - av_log(s->avctx, AV_LOG_DEBUG, "%c esc_type:%d, qp:%d num:%d\n", - s->droppable ? 'D' : av_get_picture_type_char(s->pict_type), - s->h263_flv - 1, s->qscale, s->picture_number); - } - - s->y_dc_scale_table= - s->c_dc_scale_table= ff_mpeg1_dc_scale_table; - - return 0; -} - -AVCodec ff_flv_decoder = { - .name = "flv", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_FLV1, - .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, - .max_lowres = 3, - .long_name = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"), - .pix_fmts = ff_pixfmt_list_420, -}; |