FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/api/api-seek-test.c
Date: 2026-04-24 10:13:59
Exec Total Coverage
Lines: 115 172 66.9%
Functions: 6 6 100.0%
Branches: 63 100 63.0%
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 * Seek 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
33 int64_t *pts_array;
34 uint32_t *crc_array;
35 int size_of_array;
36 int number_of_elements;
37
38 25 static int add_crc_to_array(uint32_t crc, int64_t pts)
39 {
40
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 25 if (size_of_array <= number_of_elements) {
41
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 2 if (size_of_array == 0)
42 1 size_of_array = 10;
43 2 size_of_array *= 2;
44 2 crc_array = av_realloc_f(crc_array, size_of_array, sizeof(uint32_t));
45 2 pts_array = av_realloc_f(pts_array, size_of_array, sizeof(int64_t));
46
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 2 if ((crc_array == NULL) || (pts_array == NULL)) {
47 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate array to store crcs\n");
48 ✗ return AVERROR(ENOMEM);
49 }
50 }
51 25 crc_array[number_of_elements] = crc;
52 25 pts_array[number_of_elements] = pts;
53 25 number_of_elements++;
54 25 return 0;
55 }
56
57 19 static int compare_crc_in_array(uint32_t crc, int64_t pts)
58 {
59 int i;
60
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 163 for (i = 0; i < number_of_elements; i++) {
61
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 163 if (pts_array[i] == pts) {
62
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 19 if (crc_array[i] == crc) {
63 19 printf("Comparing 0x%08"PRIx32" %"PRId64" %d is OK\n", crc, pts, i);
64 19 return 0;
65 }
66 else {
67 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect crc of a frame after seeking\n");
68 ✗ return -1;
69 }
70 }
71 }
72 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect pts of a frame after seeking\n");
73 ✗ return -1;
74 }
75
76 29 static int compute_crc_of_packets(AVFormatContext *fmt_ctx, int video_stream,
77 AVCodecContext *ctx, AVPacket *pkt, AVFrame *fr,
78 uint64_t ts_start, uint64_t ts_end, int no_seeking)
79 {
80 int number_of_written_bytes;
81 int result;
82 int byte_buffer_size;
83 uint8_t *byte_buffer;
84 uint32_t crc;
85
86 29 byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16);
87 29 byte_buffer = av_malloc(byte_buffer_size);
88
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 29 if (!byte_buffer) {
89 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
90 ✗ return AVERROR(ENOMEM);
91 }
92
93
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 29 if (!no_seeking) {
94 28 result = av_seek_frame(fmt_ctx, video_stream, ts_start, AVSEEK_FLAG_ANY);
95 28 printf("Seeking to %"PRId64", computing crc for frames with pts < %"PRId64"\n", ts_start, ts_end);
96
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 28 if (result < 0) {
97 ✗ av_log(NULL, AV_LOG_ERROR, "Error in seeking\n");
98 ✗ return result;
99 }
100 28 avcodec_flush_buffers(ctx);
101 }
102
103 do {
104 54 result = av_read_frame(fmt_ctx, pkt);
105
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 54 if (result >= 0 && pkt->stream_index != video_stream) {
106 ✗ av_packet_unref(pkt);
107 ✗ continue;
108 }
109
110
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 54 if (result < 0)
111 1 result = avcodec_send_packet(ctx, NULL);
112 else {
113
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 53 if (pkt->pts == AV_NOPTS_VALUE) {
114 ✗ av_log(NULL, AV_LOG_ERROR, "Error: frames doesn't have pts values\n");
115 ✗ return -1;
116 }
117 53 result = avcodec_send_packet(ctx, pkt);
118 }
119
120 54 av_packet_unref(pkt);
121
122
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 54 if (result < 0) {
123 ✗ av_log(NULL, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
124 ✗ return result;
125 }
126
127
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 98 while (result >= 0) {
128 98 result = avcodec_receive_frame(ctx, fr);
129
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 98 if (result == AVERROR_EOF)
130 1 goto finish;
131
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 97 else if (result == AVERROR(EAGAIN)) {
132 44 result = 0;
133 44 break;
134
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 53 } else if (result < 0) {
135 ✗ av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
136 ✗ return result;
137 }
138
139 53 number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
140 53 (const uint8_t* const *)fr->data, (const int*) fr->linesize,
141 ctx->pix_fmt, ctx->width, ctx->height, 1);
142
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 53 if (number_of_written_bytes < 0) {
143 ✗ av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
144 ✗ return number_of_written_bytes;
145 }
146
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 53 if ((!no_seeking) && (fr->pts > ts_end))
147 9 break;
148 44 crc = av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes);
149 44 printf("%10"PRId64", 0x%08"PRIx32"\n", fr->pts, crc);
150
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 44 if (no_seeking) {
151
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 25 if (add_crc_to_array(crc, fr->pts) < 0)
152 ✗ return -1;
153 }
154 else {
155
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 19 if (compare_crc_in_array(crc, fr->pts) < 0)
156 ✗ return -1;
157 }
158 44 av_frame_unref(fr);
159 }
160
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 53 } while (result >= 0 && (no_seeking || (fr->pts + fr->duration <= ts_end)));
161
162 28 finish:
163 29 av_freep(&byte_buffer);
164
165 29 return 0;
166 }
167
168 2 static long int read_seek_range(const char *string_with_number)
169 {
170 long int number;
171 2 char *end_of_string = NULL;
172 2 number = strtol(string_with_number, &end_of_string, 10);
173
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 2 if ((strlen(string_with_number) != end_of_string - string_with_number) || (number < 0)) {
174 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect input ranges of seeking\n");
175 ✗ return -1;
176 }
177
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 2 else if ((number == LONG_MAX) || (number == LONG_MIN)) {
178 ✗ if (errno == ERANGE) {
179 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect input ranges of seeking\n");
180 ✗ return -1;
181 }
182 }
183 2 return number;
184 }
185
186 1 static int seek_test(const char *input_filename, const char *start, const char *end)
187 {
188 1 const AVCodec *codec = NULL;
189 1 AVCodecContext *ctx= NULL;
190 1 AVCodecParameters *origin_par = NULL;
191 1 AVPacket *pkt = NULL;
192 1 AVFrame *fr = NULL;
193 1 AVFormatContext *fmt_ctx = NULL;
194 int video_stream;
195 int result;
196 int i, j;
197 long int start_ts, end_ts;
198
199 1 size_of_array = 0;
200 1 number_of_elements = 0;
201 1 crc_array = NULL;
202 1 pts_array = NULL;
203
204 1 result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
205
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 1 if (result < 0) {
206 ✗ av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
207 ✗ return result;
208 }
209
210 1 result = avformat_find_stream_info(fmt_ctx, NULL);
211
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 1 if (result < 0) {
212 ✗ av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
213 ✗ goto end;
214 }
215
216 1 start_ts = read_seek_range(start);
217 1 end_ts = read_seek_range(end);
218
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 1 if ((start_ts < 0) || (end_ts < 0)) {
219 ✗ result = -1;
220 ✗ goto end;
221 }
222
223 //TODO: add ability to work with audio format
224 1 video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
225
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 1 if (video_stream < 0) {
226 ✗ av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
227 ✗ result = video_stream;
228 ✗ goto end;
229 }
230
231 1 origin_par = fmt_ctx->streams[video_stream]->codecpar;
232
233 1 codec = avcodec_find_decoder(origin_par->codec_id);
234
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 1 if (!codec) {
235 ✗ av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
236 ✗ result = AVERROR_DECODER_NOT_FOUND;
237 ✗ goto end;
238 }
239
240 1 ctx = avcodec_alloc_context3(codec);
241
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 1 if (!ctx) {
242 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
243 ✗ result = AVERROR(ENOMEM);
244 ✗ goto end;
245 }
246
247 1 result = avcodec_parameters_to_context(ctx, origin_par);
248
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 1 if (result) {
249 ✗ av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
250 ✗ goto end;
251 }
252
253 1 result = avcodec_open2(ctx, codec, NULL);
254
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 1 if (result < 0) {
255 ✗ av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
256 ✗ goto end;
257 }
258
259 1 fr = av_frame_alloc();
260
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 1 if (!fr) {
261 ✗ av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
262 ✗ result = AVERROR(ENOMEM);
263 ✗ goto end;
264 }
265
266 1 pkt = av_packet_alloc();
267
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 1 if (!pkt) {
268 ✗ av_log(NULL, AV_LOG_ERROR, "Cannot allocate packet\n");
269 ✗ result = AVERROR(ENOMEM);
270 ✗ goto end;
271 }
272
273 1 result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, pkt, fr, 0, 0, 1);
274
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 1 if (result != 0)
275 ✗ goto end;
276
277
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 9 for (i = start_ts; i < end_ts; i += 100) {
278
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 36 for (j = i + 100; j < end_ts; j += 100) {
279 28 result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, pkt, fr, i, j, 0);
280
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 28 if (result != 0)
281 ✗ break;
282 }
283 }
284
285 1 end:
286 1 av_freep(&crc_array);
287 1 av_freep(&pts_array);
288 1 av_packet_free(&pkt);
289 1 av_frame_free(&fr);
290 1 avformat_close_input(&fmt_ctx);
291 1 avcodec_free_context(&ctx);
292 1 return result;
293 }
294
295 1 int main(int argc, char **argv)
296 {
297
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 1 if (argc < 4) {
298 ✗ av_log(NULL, AV_LOG_ERROR, "Incorrect input\n");
299 ✗ return 1;
300 }
301
302
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 1 if (seek_test(argv[1], argv[2], argv[3]) != 0)
303 ✗ return 1;
304
305 1 return 0;
306 }
307