LCOV - code coverage report
Current view: top level - libavformat - v210.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 26 0.0 %
Date: 2017-12-16 21:16:39 Functions: 0 2 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Raw v210 video demuxer
       3             :  * Copyright (c) 2015 Tiancheng "Timothy" Gu
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "libavutil/imgutils.h"
      23             : #include "libavutil/parseutils.h"
      24             : #include "libavutil/pixdesc.h"
      25             : #include "libavutil/opt.h"
      26             : #include "internal.h"
      27             : #include "avformat.h"
      28             : 
      29             : typedef struct V210DemuxerContext {
      30             :     const AVClass *class;     /**< Class for private options. */
      31             :     int width, height;        /**< Integers describing video size, set by a private option. */
      32             :     AVRational framerate;     /**< AVRational describing framerate, set by a private option. */
      33             : } V210DemuxerContext;
      34             : 
      35             : // v210 frame width is padded to multiples of 48
      36             : #define GET_PACKET_SIZE(w, h) (((w + 47) / 48) * 48 * h * 8 / 3)
      37             : 
      38           0 : static int v210_read_header(AVFormatContext *ctx)
      39             : {
      40           0 :     V210DemuxerContext *s = ctx->priv_data;
      41             :     AVStream *st;
      42             :     int ret;
      43             : 
      44           0 :     st = avformat_new_stream(ctx, NULL);
      45           0 :     if (!st)
      46           0 :         return AVERROR(ENOMEM);
      47             : 
      48           0 :     st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
      49             : 
      50           0 :     st->codecpar->codec_id = ctx->iformat->raw_codec_id;
      51             : 
      52           0 :     avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
      53             : 
      54           0 :     ret = av_image_check_size(s->width, s->height, 0, ctx);
      55           0 :     if (ret < 0)
      56           0 :         return ret;
      57           0 :     st->codecpar->width    = s->width;
      58           0 :     st->codecpar->height   = s->height;
      59           0 :     st->codecpar->format   = ctx->iformat->raw_codec_id == AV_CODEC_ID_V210 ?
      60           0 :                              AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV422P16;
      61           0 :     ctx->packet_size       = GET_PACKET_SIZE(s->width, s->height);
      62           0 :     st->codecpar->bit_rate = av_rescale_q(ctx->packet_size,
      63           0 :                                        (AVRational){8,1}, st->time_base);
      64             : 
      65           0 :     return 0;
      66             : }
      67             : 
      68             : 
      69           0 : static int v210_read_packet(AVFormatContext *s, AVPacket *pkt)
      70             : {
      71             :     int ret;
      72             : 
      73           0 :     ret = av_get_packet(s->pb, pkt, s->packet_size);
      74           0 :     pkt->pts = pkt->dts = pkt->pos / s->packet_size;
      75             : 
      76           0 :     pkt->stream_index = 0;
      77           0 :     if (ret < 0)
      78           0 :         return ret;
      79           0 :     return 0;
      80             : }
      81             : 
      82             : #define OFFSET(x) offsetof(V210DemuxerContext, x)
      83             : #define DEC AV_OPT_FLAG_DECODING_PARAM
      84             : static const AVOption v210_options[] = {
      85             :     { "video_size", "set frame size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
      86             :     { "framerate", "set frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC },
      87             :     { NULL },
      88             : };
      89             : 
      90             : #if CONFIG_V210_DEMUXER
      91             : static const AVClass v210_demuxer_class = {
      92             :     .class_name = "v210 demuxer",
      93             :     .item_name  = av_default_item_name,
      94             :     .option     = v210_options,
      95             :     .version    = LIBAVUTIL_VERSION_INT,
      96             : };
      97             : 
      98             : AVInputFormat ff_v210_demuxer = {
      99             :     .name           = "v210",
     100             :     .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
     101             :     .priv_data_size = sizeof(V210DemuxerContext),
     102             :     .read_header    = v210_read_header,
     103             :     .read_packet    = v210_read_packet,
     104             :     .flags          = AVFMT_GENERIC_INDEX,
     105             :     .extensions     = "v210",
     106             :     .raw_codec_id   = AV_CODEC_ID_V210,
     107             :     .priv_class     = &v210_demuxer_class,
     108             : };
     109             : #endif // CONFIG_V210_DEMUXER
     110             : 
     111             : #if CONFIG_V210X_DEMUXER
     112             : static const AVClass v210x_demuxer_class = {
     113             :     .class_name = "v210x demuxer",
     114             :     .item_name  = av_default_item_name,
     115             :     .option     = v210_options,
     116             :     .version    = LIBAVUTIL_VERSION_INT,
     117             : };
     118             : 
     119             : AVInputFormat ff_v210x_demuxer = {
     120             :     .name           = "v210x",
     121             :     .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
     122             :     .priv_data_size = sizeof(V210DemuxerContext),
     123             :     .read_header    = v210_read_header,
     124             :     .read_packet    = v210_read_packet,
     125             :     .flags          = AVFMT_GENERIC_INDEX,
     126             :     .extensions     = "yuv10",
     127             :     .raw_codec_id   = AV_CODEC_ID_V210X,
     128             :     .priv_class     = &v210x_demuxer_class,
     129             : };
     130             : #endif // CONFIG_V210X_DEMUXER

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