/*
* FLV decoding.
- * This file is part of FFmpeg.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "mpegvideo.h"
+#include "libavutil/imgutils.h"
+
#include "flv.h"
+#include "h263.h"
+#include "mpegvideo.h"
-void ff_flv2_decode_ac_esc(GetBitContext *gb, int *level, int *run, int *last){
+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){
+ *run = get_bits(gb, 6);
+ if (is11)
*level = get_sbits(gb, 11);
- } else {
+ else
*level = get_sbits(gb, 7);
- }
}
int ff_flv_decode_picture_header(MpegEncContext *s)
av_log(s->avctx, AV_LOG_ERROR, "Bad picture format\n");
return -1;
}
- s->h263_flv = format+1;
+ s->h263_flv = format + 1;
s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
- format = get_bits(&s->gb, 3);
+ format = get_bits(&s->gb, 3);
switch (format) {
case 0:
- width = get_bits(&s->gb, 8);
+ width = get_bits(&s->gb, 8);
height = get_bits(&s->gb, 8);
break;
case 1:
- width = get_bits(&s->gb, 16);
+ width = get_bits(&s->gb, 16);
height = get_bits(&s->gb, 16);
break;
case 2:
- width = 352;
+ width = 352;
height = 288;
break;
case 3:
- width = 176;
+ width = 176;
height = 144;
break;
case 4:
- width = 128;
+ width = 128;
height = 96;
break;
case 5:
- width = 320;
+ width = 320;
height = 240;
break;
case 6:
- width = 160;
+ width = 160;
height = 120;
break;
default:
width = height = 0;
break;
}
- if(avcodec_check_dimensions(s->avctx, width, height))
+ if (av_image_check_size(width, height, 0, s->avctx))
return -1;
- s->width = width;
+ s->width = width;
s->height = height;
- s->pict_type = FF_I_TYPE + get_bits(&s->gb, 2);
- s->dropable= s->pict_type > FF_P_TYPE;
- if (s->dropable)
- s->pict_type = FF_P_TYPE;
+ 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->chroma_qscale = s->qscale = get_bits(&s->gb, 5);
s->h263_plus = 0;
- s->unrestricted_mv = 1;
+ s->unrestricted_mv = 1;
s->h263_long_vectors = 0;
/* PEI */
- while (get_bits1(&s->gb) != 0) {
+ while (get_bits1(&s->gb) != 0)
skip_bits(&s->gb, 8);
- }
s->f_code = 1;
- if(s->avctx->debug & FF_DEBUG_PICT_INFO){
+ 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->dropable ? 'D' : av_get_pict_type_char(s->pict_type), s->h263_flv-1, s->qscale, s->picture_number);
+ 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;
+ s->y_dc_scale_table = s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
return 0;
}
-AVCodec flv_decoder = {
- "flv",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FLV1,
- sizeof(MpegEncContext),
- ff_h263_decode_init,
- NULL,
- ff_h263_decode_end,
- ff_h263_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
- .long_name= NULL_IF_CONFIG_SMALL("Flash Video (FLV) / Sorenson Spark / Sorenson H.263"),
- .pix_fmts= ff_pixfmt_list_420,
+AVCodec ff_flv_decoder = {
+ .name = "flv",
+ .long_name = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"),
+ .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,
+ .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_NONE },
};