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79ae084e9b
* qatar/master: (58 commits) amrnbdec: check frame size before decoding. cscd: use negative error values to indicate decode_init() failures. h264: prevent overreads in intra PCM decoding. FATE: do not decode audio in the nuv test. dxa: set audio stream time base using the sample rate psx-str: do not allow seeking by bytes asfdec: Do not set AVCodecContext.frame_size vqf: set packet parameters after av_new_packet() mpegaudiodec: use DSPUtil.butterflies_float(). FATE: add mp3 test for sample that exhibited false overreads fate: add cdxl test for bit line plane arrangement vmnc: return error on decode_init() failure. libvorbis: add/update error messages libvorbis: use AVFifoBuffer for output packet buffer libvorbis: remove unneeded e_o_s check libvorbis: check return values for functions that can return errors libvorbis: use float input instead of s16 libvorbis: do not flush libvorbis analysis if dsp state was not initialized libvorbis: use VBR by default, with default quality of 3 libvorbis: fix use of minrate/maxrate AVOptions ... Conflicts: Changelog doc/APIchanges libavcodec/avcodec.h libavcodec/dpxenc.c libavcodec/libvorbis.c libavcodec/vmnc.c libavformat/asfdec.c libavformat/id3v2enc.c libavformat/internal.h libavformat/mp3enc.c libavformat/utils.c libavformat/version.h libswscale/utils.c tests/fate/video.mak tests/ref/fate/nuv tests/ref/fate/prores-alpha tests/ref/lavf/ffm tests/ref/vsynth1/prores tests/ref/vsynth2/prores Merged-by: Michael Niedermayer <michaelni@gmx.at>
101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
/*
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* FLV Encoding specific code.
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mpegvideo.h"
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#include "h263.h"
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#include "flv.h"
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void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number)
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{
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int format;
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avpriv_align_put_bits(&s->pb);
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put_bits(&s->pb, 17, 1);
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put_bits(&s->pb, 5, (s->h263_flv-1)); /* 0: h263 escape codes 1: 11-bit escape codes */
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put_bits(&s->pb, 8, (((int64_t)s->picture_number * 30 * s->avctx->time_base.num) / //FIXME use timestamp
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s->avctx->time_base.den) & 0xff); /* TemporalReference */
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if (s->width == 352 && s->height == 288)
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format = 2;
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else if (s->width == 176 && s->height == 144)
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format = 3;
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else if (s->width == 128 && s->height == 96)
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format = 4;
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else if (s->width == 320 && s->height == 240)
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format = 5;
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else if (s->width == 160 && s->height == 120)
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format = 6;
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else if (s->width <= 255 && s->height <= 255)
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format = 0; /* use 1 byte width & height */
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else
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format = 1; /* use 2 bytes width & height */
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put_bits(&s->pb, 3, format); /* PictureSize */
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if (format == 0) {
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put_bits(&s->pb, 8, s->width);
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put_bits(&s->pb, 8, s->height);
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} else if (format == 1) {
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put_bits(&s->pb, 16, s->width);
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put_bits(&s->pb, 16, s->height);
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}
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put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_P); /* PictureType */
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put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */
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put_bits(&s->pb, 5, s->qscale); /* Quantizer */
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put_bits(&s->pb, 1, 0); /* ExtraInformation */
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if(s->h263_aic){
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s->y_dc_scale_table=
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s->c_dc_scale_table= ff_aic_dc_scale_table;
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}else{
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s->y_dc_scale_table=
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s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
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}
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}
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void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, int last){
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if(level < 64) { // 7-bit level
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put_bits(pb, 1, 0);
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put_bits(pb, 1, last);
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put_bits(pb, 6, run);
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put_sbits(pb, 7, slevel);
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} else {
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/* 11-bit level */
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put_bits(pb, 1, 1);
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put_bits(pb, 1, last);
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put_bits(pb, 6, run);
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put_sbits(pb, 11, slevel);
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}
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}
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FF_MPV_GENERIC_CLASS(flv)
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AVCodec ff_flv_encoder = {
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.name = "flv",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_FLV1,
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.priv_data_size = sizeof(MpegEncContext),
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.init = ff_MPV_encode_init,
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.encode2 = ff_MPV_encode_picture,
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.close = ff_MPV_encode_end,
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.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
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.long_name= NULL_IF_CONFIG_SMALL("Flash Video (FLV) / Sorenson Spark / Sorenson H.263"),
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.priv_class = &flv_class,
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};
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