LCOV - code coverage report
Current view: top level - libavformat - ivfenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 49 0.0 %
Date: 2017-12-15 18:13:28 Functions: 0 4 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2010 Reimar Döffinger
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : #include "avformat.h"
      21             : #include "internal.h"
      22             : #include "libavutil/intreadwrite.h"
      23             : 
      24             : typedef struct IVFEncContext {
      25             :     unsigned frame_cnt;
      26             :     uint64_t last_pts, sum_delta_pts;
      27             : } IVFEncContext;
      28             : 
      29           0 : static int ivf_write_header(AVFormatContext *s)
      30             : {
      31             :     AVCodecParameters *par;
      32           0 :     AVIOContext *pb = s->pb;
      33             : 
      34           0 :     if (s->nb_streams != 1) {
      35           0 :         av_log(s, AV_LOG_ERROR, "Format supports only exactly one video stream\n");
      36           0 :         return AVERROR(EINVAL);
      37             :     }
      38           0 :     par = s->streams[0]->codecpar;
      39           0 :     if (par->codec_type != AVMEDIA_TYPE_VIDEO ||
      40           0 :         !(par->codec_id == AV_CODEC_ID_VP8 || par->codec_id == AV_CODEC_ID_VP9 ||
      41           0 :           par->codec_id == AV_CODEC_ID_AV1)) {
      42           0 :         av_log(s, AV_LOG_ERROR, "Currently only VP8, VP9 and AV1 are supported!\n");
      43           0 :         return AVERROR(EINVAL);
      44             :     }
      45           0 :     avio_write(pb, "DKIF", 4);
      46           0 :     avio_wl16(pb, 0); // version
      47           0 :     avio_wl16(pb, 32); // header length
      48           0 :     avio_wl32(pb, par->codec_tag ? par->codec_tag :
      49           0 :               par->codec_id == AV_CODEC_ID_VP9 ? AV_RL32("VP90") :
      50           0 :               par->codec_id == AV_CODEC_ID_VP8 ? AV_RL32("VP80") : AV_RL32("AV01"));
      51           0 :     avio_wl16(pb, par->width);
      52           0 :     avio_wl16(pb, par->height);
      53           0 :     avio_wl32(pb, s->streams[0]->time_base.den);
      54           0 :     avio_wl32(pb, s->streams[0]->time_base.num);
      55           0 :     avio_wl64(pb, 0xFFFFFFFFFFFFFFFFULL);
      56             : 
      57           0 :     return 0;
      58             : }
      59             : 
      60           0 : static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
      61             : {
      62           0 :     AVIOContext *pb = s->pb;
      63           0 :     IVFEncContext *ctx = s->priv_data;
      64             : 
      65           0 :     avio_wl32(pb, pkt->size);
      66           0 :     avio_wl64(pb, pkt->pts);
      67           0 :     avio_write(pb, pkt->data, pkt->size);
      68           0 :     if (ctx->frame_cnt)
      69           0 :         ctx->sum_delta_pts += pkt->pts - ctx->last_pts;
      70           0 :     ctx->frame_cnt++;
      71           0 :     ctx->last_pts = pkt->pts;
      72             : 
      73           0 :     return 0;
      74             : }
      75             : 
      76           0 : static int ivf_write_trailer(AVFormatContext *s)
      77             : {
      78           0 :     AVIOContext *pb = s->pb;
      79           0 :     IVFEncContext *ctx = s->priv_data;
      80             : 
      81           0 :     if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && ctx->frame_cnt > 1) {
      82           0 :         size_t end = avio_tell(pb);
      83             : 
      84           0 :         avio_seek(pb, 24, SEEK_SET);
      85           0 :         avio_wl64(pb, ctx->frame_cnt * ctx->sum_delta_pts / (ctx->frame_cnt - 1));
      86           0 :         avio_seek(pb, end, SEEK_SET);
      87             :     }
      88             : 
      89           0 :     return 0;
      90             : }
      91             : 
      92           0 : static int ivf_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
      93             : {
      94           0 :     int ret = 1;
      95           0 :     AVStream *st = s->streams[pkt->stream_index];
      96             : 
      97           0 :     if (st->codecpar->codec_id == AV_CODEC_ID_VP9)
      98           0 :         ret = ff_stream_add_bitstream_filter(st, "vp9_superframe", NULL);
      99             : 
     100           0 :     return ret;
     101             : }
     102             : 
     103             : static const AVCodecTag codec_ivf_tags[] = {
     104             :     { AV_CODEC_ID_VP8,  MKTAG('V', 'P', '8', '0') },
     105             :     { AV_CODEC_ID_VP9,  MKTAG('V', 'P', '9', '0') },
     106             :     { AV_CODEC_ID_AV1,  MKTAG('A', 'V', '0', '1') },
     107             :     { AV_CODEC_ID_NONE, 0 }
     108             : };
     109             : 
     110             : AVOutputFormat ff_ivf_muxer = {
     111             :     .priv_data_size = sizeof(IVFEncContext),
     112             :     .name         = "ivf",
     113             :     .long_name    = NULL_IF_CONFIG_SMALL("On2 IVF"),
     114             :     .extensions   = "ivf",
     115             :     .audio_codec  = AV_CODEC_ID_NONE,
     116             :     .video_codec  = AV_CODEC_ID_VP8,
     117             :     .write_header = ivf_write_header,
     118             :     .write_packet = ivf_write_packet,
     119             :     .write_trailer = ivf_write_trailer,
     120             :     .check_bitstream = ivf_check_bitstream,
     121             :     .codec_tag    = (const AVCodecTag* const []){ codec_ivf_tags, 0 },
     122             : };

Generated by: LCOV version 1.13