FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/api/api-h264-test.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 69 102 67.6%
Functions: 2 2 100.0%
Branches: 27 46 58.7%
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