LCOV - code coverage report
Current view: top level - src/tests/api - api-h264-test.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 68 93 73.1 %
Date: 2017-04-24 03:48:25 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2015 Ludmila Glinskih
       3             :  *
       4             :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       5             :  * of this software and associated documentation files (the "Software"), to deal
       6             :  * in the Software without restriction, including without limitation the rights
       7             :  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       8             :  * copies of the Software, and to permit persons to whom the Software is
       9             :  * furnished to do so, subject to the following conditions:
      10             :  *
      11             :  * The above copyright notice and this permission notice shall be included in
      12             :  * all copies or substantial portions of the Software.
      13             :  *
      14             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      15             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      16             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      17             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      18             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      19             :  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      20             :  * THE SOFTWARE.
      21             :  */
      22             : 
      23             : /**
      24             :  * H264 codec test.
      25             :  */
      26             : 
      27             : #include "libavutil/adler32.h"
      28             : #include "libavcodec/avcodec.h"
      29             : #include "libavformat/avformat.h"
      30             : #include "libavutil/imgutils.h"
      31             : 
      32           1 : static int video_decode_example(const char *input_filename)
      33             : {
      34           1 :     AVCodec *codec = NULL;
      35           1 :     AVCodecContext *ctx= NULL;
      36           1 :     AVCodecParameters *origin_par = NULL;
      37           1 :     AVFrame *fr = NULL;
      38           1 :     uint8_t *byte_buffer = NULL;
      39             :     AVPacket pkt;
      40           1 :     AVFormatContext *fmt_ctx = NULL;
      41             :     int number_of_written_bytes;
      42             :     int video_stream;
      43           1 :     int got_frame = 0;
      44             :     int byte_buffer_size;
      45           1 :     int i = 0;
      46             :     int result;
      47           1 :     int end_of_stream = 0;
      48             : 
      49           1 :     result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
      50           1 :     if (result < 0) {
      51           0 :         av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
      52           0 :         return result;
      53             :     }
      54             : 
      55           1 :     result = avformat_find_stream_info(fmt_ctx, NULL);
      56           1 :     if (result < 0) {
      57           0 :         av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
      58           0 :         return result;
      59             :     }
      60             : 
      61           1 :     video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
      62           1 :     if (video_stream < 0) {
      63           0 :       av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
      64           0 :       return -1;
      65             :     }
      66             : 
      67           1 :     origin_par = fmt_ctx->streams[video_stream]->codecpar;
      68             : 
      69           1 :     codec = avcodec_find_decoder(origin_par->codec_id);
      70           1 :     if (!codec) {
      71           0 :         av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
      72           0 :         return -1;
      73             :     }
      74             : 
      75           1 :     ctx = avcodec_alloc_context3(codec);
      76           1 :     if (!ctx) {
      77           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
      78           0 :         return AVERROR(ENOMEM);
      79             :     }
      80             : 
      81           1 :     result = avcodec_parameters_to_context(ctx, origin_par);
      82           1 :     if (result) {
      83           0 :         av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
      84           0 :         return result;
      85             :     }
      86             : 
      87           1 :     result = avcodec_open2(ctx, codec, NULL);
      88           1 :     if (result < 0) {
      89           0 :         av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
      90           0 :         return result;
      91             :     }
      92             : 
      93           1 :     fr = av_frame_alloc();
      94           1 :     if (!fr) {
      95           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
      96           0 :         return AVERROR(ENOMEM);
      97             :     }
      98             : 
      99           1 :     byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16);
     100           1 :     byte_buffer = av_malloc(byte_buffer_size);
     101           1 :     if (!byte_buffer) {
     102           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
     103           0 :         return AVERROR(ENOMEM);
     104             :     }
     105             : 
     106           1 :     printf("#tb %d: %d/%d\n", video_stream, fmt_ctx->streams[video_stream]->time_base.num, fmt_ctx->streams[video_stream]->time_base.den);
     107           1 :     i = 0;
     108           1 :     av_init_packet(&pkt);
     109             :     do {
     110          18 :         if (!end_of_stream)
     111          18 :             if (av_read_frame(fmt_ctx, &pkt) < 0)
     112           1 :                 end_of_stream = 1;
     113          18 :         if (end_of_stream) {
     114           1 :             pkt.data = NULL;
     115           1 :             pkt.size = 0;
     116             :         }
     117          18 :         if (pkt.stream_index == video_stream || end_of_stream) {
     118          18 :             got_frame = 0;
     119          18 :             if (pkt.pts == AV_NOPTS_VALUE)
     120          18 :                 pkt.pts = pkt.dts = i;
     121          18 :             result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt);
     122          18 :             if (result < 0) {
     123           0 :                 av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
     124           0 :                 return result;
     125             :             }
     126          18 :             if (got_frame) {
     127          68 :                 number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
     128          17 :                                         (const uint8_t* const *)fr->data, (const int*) fr->linesize,
     129          51 :                                         ctx->pix_fmt, ctx->width, ctx->height, 1);
     130          17 :                 if (number_of_written_bytes < 0) {
     131           0 :                     av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
     132           0 :                     return number_of_written_bytes;
     133             :                 }
     134          68 :                 printf("%d, %10"PRId64", %10"PRId64", %8"PRId64", %8d, 0x%08lx\n", video_stream,
     135          51 :                         fr->pts, fr->pkt_dts, fr->pkt_duration,
     136             :                         number_of_written_bytes, av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes));
     137             :             }
     138          18 :             av_packet_unref(&pkt);
     139          18 :             av_init_packet(&pkt);
     140             :         }
     141          18 :         i++;
     142          18 :     } while (!end_of_stream || got_frame);
     143             : 
     144           1 :     av_packet_unref(&pkt);
     145           1 :     av_frame_free(&fr);
     146           1 :     avcodec_close(ctx);
     147           1 :     avformat_close_input(&fmt_ctx);
     148           1 :     avcodec_free_context(&ctx);
     149           1 :     av_freep(&byte_buffer);
     150           1 :     return 0;
     151             : }
     152             : 
     153           1 : int main(int argc, char **argv)
     154             : {
     155           1 :     if (argc < 2)
     156             :     {
     157           0 :         av_log(NULL, AV_LOG_ERROR, "Incorrect input\n");
     158           0 :         return 1;
     159             :     }
     160             : 
     161           1 :     av_register_all();
     162             : 
     163           1 :     if (video_decode_example(argv[1]) != 0)
     164           0 :         return 1;
     165             : 
     166           1 :     return 0;
     167             : }

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