| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 "libavutil/mem.h" | ||
| 29 | #include "libavcodec/avcodec.h" | ||
| 30 | #include "libavformat/avformat.h" | ||
| 31 | #include "libavutil/imgutils.h" | ||
| 32 | #include "libavutil/timestamp.h" | ||
| 33 | |||
| 34 | 1 | static int video_decode_example(const char *input_filename) | |
| 35 | { | ||
| 36 | 1 | const AVCodec *codec = NULL; | |
| 37 | 1 | AVCodecContext *ctx= NULL; | |
| 38 | 1 | AVCodecParameters *origin_par = NULL; | |
| 39 | 1 | AVFrame *fr = NULL; | |
| 40 | 1 | uint8_t *byte_buffer = NULL; | |
| 41 | AVPacket *pkt; | ||
| 42 | 1 | AVFormatContext *fmt_ctx = NULL; | |
| 43 | int number_of_written_bytes; | ||
| 44 | int video_stream; | ||
| 45 | int byte_buffer_size; | ||
| 46 | 1 | int i = 0; | |
| 47 | int result; | ||
| 48 | |||
| 49 | 1 | result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL); | |
| 50 |
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1 | if (result < 0) { |
| 51 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't open file\n"); | |
| 52 | ✗ | return result; | |
| 53 | } | ||
| 54 | |||
| 55 | 1 | result = avformat_find_stream_info(fmt_ctx, NULL); | |
| 56 |
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1 | if (result < 0) { |
| 57 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n"); | |
| 58 | ✗ | return result; | |
| 59 | } | ||
| 60 | |||
| 61 | 1 | video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0); | |
| 62 |
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1 | if (video_stream < 0) { |
| 63 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n"); | |
| 64 | ✗ | 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 |
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1 | if (!codec) { |
| 71 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n"); | |
| 72 | ✗ | return -1; | |
| 73 | } | ||
| 74 | |||
| 75 | 1 | ctx = avcodec_alloc_context3(codec); | |
| 76 |
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1 | if (!ctx) { |
| 77 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n"); | |
| 78 | ✗ | return AVERROR(ENOMEM); | |
| 79 | } | ||
| 80 | |||
| 81 | 1 | result = avcodec_parameters_to_context(ctx, origin_par); | |
| 82 |
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1 | if (result) { |
| 83 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n"); | |
| 84 | ✗ | return result; | |
| 85 | } | ||
| 86 | |||
| 87 | 1 | result = avcodec_open2(ctx, codec, NULL); | |
| 88 |
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1 | if (result < 0) { |
| 89 | ✗ | av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n"); | |
| 90 | ✗ | return result; | |
| 91 | } | ||
| 92 | |||
| 93 | 1 | fr = av_frame_alloc(); | |
| 94 |
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1 | if (!fr) { |
| 95 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n"); | |
| 96 | ✗ | return AVERROR(ENOMEM); | |
| 97 | } | ||
| 98 | |||
| 99 | 1 | pkt = av_packet_alloc(); | |
| 100 |
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1 | if (!pkt) { |
| 101 | ✗ | av_log(NULL, AV_LOG_ERROR, "Cannot allocate packet\n"); | |
| 102 | ✗ | return AVERROR(ENOMEM); | |
| 103 | } | ||
| 104 | |||
| 105 | 1 | byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16); | |
| 106 | 1 | byte_buffer = av_malloc(byte_buffer_size); | |
| 107 |
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1 | if (!byte_buffer) { |
| 108 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); | |
| 109 | ✗ | return AVERROR(ENOMEM); | |
| 110 | } | ||
| 111 | |||
| 112 | 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); | |
| 113 | 1 | i = 0; | |
| 114 | |||
| 115 | 1 | result = 0; | |
| 116 |
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18 | while (result >= 0) { |
| 117 | 18 | result = av_read_frame(fmt_ctx, pkt); | |
| 118 |
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18 | if (result >= 0 && pkt->stream_index != video_stream) { |
| 119 | ✗ | av_packet_unref(pkt); | |
| 120 | ✗ | continue; | |
| 121 | } | ||
| 122 | |||
| 123 |
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18 | if (result < 0) |
| 124 | 1 | result = avcodec_send_packet(ctx, NULL); | |
| 125 | else { | ||
| 126 |
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17 | if (pkt->pts == AV_NOPTS_VALUE) |
| 127 | 17 | pkt->pts = pkt->dts = i; | |
| 128 | 17 | result = avcodec_send_packet(ctx, pkt); | |
| 129 | } | ||
| 130 | 18 | av_packet_unref(pkt); | |
| 131 | |||
| 132 |
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18 | if (result < 0) { |
| 133 | ✗ | av_log(NULL, AV_LOG_ERROR, "Error submitting a packet for decoding\n"); | |
| 134 | ✗ | return result; | |
| 135 | } | ||
| 136 | |||
| 137 |
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35 | while (result >= 0) { |
| 138 | 35 | result = avcodec_receive_frame(ctx, fr); | |
| 139 |
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35 | if (result == AVERROR_EOF) |
| 140 | 1 | goto finish; | |
| 141 |
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34 | else if (result == AVERROR(EAGAIN)) { |
| 142 | 17 | result = 0; | |
| 143 | 17 | break; | |
| 144 |
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17 | } else if (result < 0) { |
| 145 | ✗ | av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n"); | |
| 146 | ✗ | return result; | |
| 147 | } | ||
| 148 | |||
| 149 | 17 | number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size, | |
| 150 | 17 | (const uint8_t* const *)fr->data, (const int*) fr->linesize, | |
| 151 | 17 | ctx->pix_fmt, ctx->width, ctx->height, 1); | |
| 152 |
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17 | if (number_of_written_bytes < 0) { |
| 153 | ✗ | av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n"); | |
| 154 | ✗ | av_frame_unref(fr); | |
| 155 | ✗ | return number_of_written_bytes; | |
| 156 | } | ||
| 157 | 17 | printf("%d, %s, %s, %8"PRId64", %8d, 0x%08"PRIx32"\n", video_stream, | |
| 158 | 17 | av_ts2str(fr->pts), av_ts2str(fr->pkt_dts), fr->duration, | |
| 159 | number_of_written_bytes, av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes)); | ||
| 160 | |||
| 161 | 17 | av_frame_unref(fr); | |
| 162 | } | ||
| 163 | 17 | i++; | |
| 164 | } | ||
| 165 | |||
| 166 | ✗ | finish: | |
| 167 | 1 | av_packet_free(&pkt); | |
| 168 | 1 | av_frame_free(&fr); | |
| 169 | 1 | avformat_close_input(&fmt_ctx); | |
| 170 | 1 | avcodec_free_context(&ctx); | |
| 171 | 1 | av_freep(&byte_buffer); | |
| 172 | 1 | return 0; | |
| 173 | } | ||
| 174 | |||
| 175 | 1 | int main(int argc, char **argv) | |
| 176 | { | ||
| 177 |
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1 | if (argc < 2) |
| 178 | { | ||
| 179 | ✗ | av_log(NULL, AV_LOG_ERROR, "Incorrect input\n"); | |
| 180 | ✗ | return 1; | |
| 181 | } | ||
| 182 | |||
| 183 |
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1 | if (video_decode_example(argv[1]) != 0) |
| 184 | ✗ | return 1; | |
| 185 | |||
| 186 | 1 | return 0; | |
| 187 | } | ||
| 188 |