LCOV - code coverage report
Current view: top level - tests/api - api-seek-test.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 113 163 69.3 %
Date: 2017-12-14 19:11:59 Functions: 6 6 100.0 %

          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             :  * Seek 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             : int64_t *pts_array;
      33             : uint32_t *crc_array;
      34             : int size_of_array;
      35             : int number_of_elements;
      36             : 
      37          25 : static int add_crc_to_array(uint32_t crc, int64_t pts)
      38             : {
      39          25 :     if (size_of_array <= number_of_elements) {
      40           2 :         if (size_of_array == 0)
      41           1 :             size_of_array = 10;
      42           2 :         size_of_array *= 2;
      43           2 :         crc_array = av_realloc_f(crc_array, size_of_array, sizeof(uint32_t));
      44           2 :         pts_array = av_realloc_f(pts_array, size_of_array, sizeof(int64_t));
      45           2 :         if ((crc_array == NULL) || (pts_array == NULL)) {
      46           0 :             av_log(NULL, AV_LOG_ERROR, "Can't allocate array to store crcs\n");
      47           0 :             return AVERROR(ENOMEM);
      48             :         }
      49             :     }
      50          25 :     crc_array[number_of_elements] = crc;
      51          25 :     pts_array[number_of_elements] = pts;
      52          25 :     number_of_elements++;
      53          25 :     return 0;
      54             : }
      55             : 
      56         119 : static int compare_crc_in_array(uint32_t crc, int64_t pts)
      57             : {
      58             :     int i;
      59        1183 :     for (i = 0; i < number_of_elements; i++) {
      60        1183 :         if (pts_array[i] == pts) {
      61         119 :             if (crc_array[i] == crc) {
      62         119 :                 printf("Comparing 0x%08"PRIx32" %"PRId64" %d is OK\n", crc, pts, i);
      63         119 :                 return 0;
      64             :             }
      65             :             else {
      66           0 :                 av_log(NULL, AV_LOG_ERROR, "Incorrect crc of a frame after seeking\n");
      67           0 :                 return -1;
      68             :             }
      69             :         }
      70             :     }
      71           0 :     av_log(NULL, AV_LOG_ERROR, "Incorrect pts of a frame after seeking\n");
      72           0 :     return -1;
      73             : }
      74             : 
      75          29 : static int compute_crc_of_packets(AVFormatContext *fmt_ctx, int video_stream,
      76             :                                 AVCodecContext *ctx, AVFrame *fr, uint64_t ts_start, uint64_t ts_end, int no_seeking)
      77             : {
      78             :     int number_of_written_bytes;
      79          29 :     int got_frame = 0;
      80             :     int result;
      81          29 :     int end_of_stream = 0;
      82             :     int byte_buffer_size;
      83             :     uint8_t *byte_buffer;
      84             :     uint32_t crc;
      85             :     AVPacket pkt;
      86             : 
      87          29 :     byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16);
      88          29 :     byte_buffer = av_malloc(byte_buffer_size);
      89          29 :     if (!byte_buffer) {
      90           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
      91           0 :         return AVERROR(ENOMEM);
      92             :     }
      93             : 
      94          29 :     if (!no_seeking) {
      95          28 :         result = av_seek_frame(fmt_ctx, video_stream, ts_start, AVSEEK_FLAG_ANY);
      96          28 :         printf("Seeking to %"PRId64", computing crc for frames with pts < %"PRId64"\n", ts_start, ts_end);
      97          28 :         if (result < 0) {
      98           0 :             av_log(NULL, AV_LOG_ERROR, "Error in seeking\n");
      99           0 :             return result;
     100             :         }
     101          28 :         avcodec_flush_buffers(ctx);
     102             :     }
     103             : 
     104          29 :     av_init_packet(&pkt);
     105             :     do {
     106         154 :         if (!end_of_stream)
     107         154 :             if (av_read_frame(fmt_ctx, &pkt) < 0)
     108           1 :                 end_of_stream = 1;
     109         154 :         if (end_of_stream) {
     110           1 :             pkt.data = NULL;
     111           1 :             pkt.size = 0;
     112             :         }
     113         154 :         if (pkt.stream_index == video_stream || end_of_stream) {
     114         154 :             got_frame = 0;
     115         154 :             if ((pkt.pts == AV_NOPTS_VALUE) && (!end_of_stream)) {
     116           0 :                 av_log(NULL, AV_LOG_ERROR, "Error: frames doesn't have pts values\n");
     117           0 :                 return -1;
     118             :             }
     119         154 :             result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt);
     120         154 :             if (result < 0) {
     121           0 :                 av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
     122           0 :                 return result;
     123             :             }
     124         154 :             if (got_frame) {
     125         306 :                 number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
     126         153 :                                         (const uint8_t* const *)fr->data, (const int*) fr->linesize,
     127             :                                         ctx->pix_fmt, ctx->width, ctx->height, 1);
     128         153 :                 if (number_of_written_bytes < 0) {
     129           0 :                     av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
     130           0 :                     return number_of_written_bytes;
     131             :                 }
     132         153 :                 if ((!no_seeking) && (fr->pts > ts_end))
     133           9 :                     break;
     134         144 :                 crc = av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes);
     135         144 :                 printf("%10"PRId64", 0x%08"PRIx32"\n", fr->pts, crc);
     136         144 :                 if (no_seeking) {
     137          25 :                     if (add_crc_to_array(crc, fr->pts) < 0)
     138           0 :                         return -1;
     139             :                 }
     140             :                 else {
     141         119 :                     if (compare_crc_in_array(crc, fr->pts) < 0)
     142           0 :                         return -1;
     143             :                 }
     144             :             }
     145             :         }
     146         145 :         av_packet_unref(&pkt);
     147         145 :         av_init_packet(&pkt);
     148         145 :     } while ((!end_of_stream || got_frame) && (no_seeking || (fr->pts + fr->pkt_duration <= ts_end)));
     149             : 
     150          29 :     av_packet_unref(&pkt);
     151          29 :     av_freep(&byte_buffer);
     152             : 
     153          29 :     return 0;
     154             : }
     155             : 
     156           2 : static long int read_seek_range(const char *string_with_number)
     157             : {
     158             :     long int number;
     159           2 :     char *end_of_string = NULL;
     160           2 :     number = strtol(string_with_number, &end_of_string, 10);
     161           2 :     if ((strlen(string_with_number) != end_of_string - string_with_number)  || (number < 0)) {
     162           0 :         av_log(NULL, AV_LOG_ERROR, "Incorrect input ranges of seeking\n");
     163           0 :         return -1;
     164             :     }
     165           2 :     else if ((number == LONG_MAX) || (number == LONG_MIN)) {
     166           0 :         if (errno == ERANGE) {
     167           0 :             av_log(NULL, AV_LOG_ERROR, "Incorrect input ranges of seeking\n");
     168           0 :             return -1;
     169             :         }
     170             :     }
     171           2 :     return number;
     172             : }
     173             : 
     174           1 : static int seek_test(const char *input_filename, const char *start, const char *end)
     175             : {
     176           1 :     AVCodec *codec = NULL;
     177           1 :     AVCodecContext *ctx= NULL;
     178           1 :     AVCodecParameters *origin_par = NULL;
     179           1 :     AVFrame *fr = NULL;
     180           1 :     AVFormatContext *fmt_ctx = NULL;
     181             :     int video_stream;
     182             :     int result;
     183             :     int i, j;
     184             :     long int start_ts, end_ts;
     185             : 
     186           1 :     size_of_array = 0;
     187           1 :     number_of_elements = 0;
     188           1 :     crc_array = NULL;
     189           1 :     pts_array = NULL;
     190             : 
     191           1 :     result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
     192           1 :     if (result < 0) {
     193           0 :         av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
     194           0 :         return result;
     195             :     }
     196             : 
     197           1 :     result = avformat_find_stream_info(fmt_ctx, NULL);
     198           1 :     if (result < 0) {
     199           0 :         av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
     200           0 :         goto end;
     201             :     }
     202             : 
     203           1 :     start_ts = read_seek_range(start);
     204           1 :     end_ts = read_seek_range(end);
     205           1 :     if ((start_ts < 0) || (end_ts < 0)) {
     206           0 :         result = -1;
     207           0 :         goto end;
     208             :     }
     209             : 
     210             :     //TODO: add ability to work with audio format
     211           1 :     video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
     212           1 :     if (video_stream < 0) {
     213           0 :       av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
     214           0 :       result = video_stream;
     215           0 :       goto end;
     216             :     }
     217             : 
     218           1 :     origin_par = fmt_ctx->streams[video_stream]->codecpar;
     219             : 
     220           1 :     codec = avcodec_find_decoder(origin_par->codec_id);
     221           1 :     if (!codec) {
     222           0 :         av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
     223           0 :         result = AVERROR_DECODER_NOT_FOUND;
     224           0 :         goto end;
     225             :     }
     226             : 
     227           1 :     ctx = avcodec_alloc_context3(codec);
     228           1 :     if (!ctx) {
     229           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
     230           0 :         result = AVERROR(ENOMEM);
     231           0 :         goto end;
     232             :     }
     233             : 
     234           1 :     result = avcodec_parameters_to_context(ctx, origin_par);
     235           1 :     if (result) {
     236           0 :         av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
     237           0 :         goto end;
     238             :     }
     239             : 
     240           1 :     result = avcodec_open2(ctx, codec, NULL);
     241           1 :     if (result < 0) {
     242           0 :         av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
     243           0 :         goto end;
     244             :     }
     245             : 
     246           1 :     fr = av_frame_alloc();
     247           1 :     if (!fr) {
     248           0 :         av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
     249           0 :         result = AVERROR(ENOMEM);
     250           0 :         goto end;
     251             :     }
     252             : 
     253           1 :     result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, fr, 0, 0, 1);
     254           1 :     if (result != 0)
     255           0 :         goto end;
     256             : 
     257           9 :     for (i = start_ts; i < end_ts; i += 100) {
     258          36 :         for (j = i + 100; j < end_ts; j += 100) {
     259          28 :             result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, fr, i, j, 0);
     260          28 :             if (result != 0)
     261           0 :                 break;
     262             :         }
     263             :     }
     264             : 
     265           1 : end:
     266           1 :     av_freep(&crc_array);
     267           1 :     av_freep(&pts_array);
     268           1 :     av_frame_free(&fr);
     269           1 :     avcodec_close(ctx);
     270           1 :     avformat_close_input(&fmt_ctx);
     271           1 :     avcodec_free_context(&ctx);
     272           1 :     return result;
     273             : }
     274             : 
     275           1 : int main(int argc, char **argv)
     276             : {
     277           1 :     if (argc < 4) {
     278           0 :         av_log(NULL, AV_LOG_ERROR, "Incorrect input\n");
     279           0 :         return 1;
     280             :     }
     281             : 
     282           1 :     av_register_all();
     283             : 
     284           1 :     if (seek_test(argv[1], argv[2], argv[3]) != 0)
     285           0 :         return 1;
     286             : 
     287           1 :     return 0;
     288             : }

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