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
31
36
38 {
48 }
49 }
53 return 0;
54 }
55
57 {
58 int i;
62 printf("Comparing 0x%08lx %"PRId64" %d is OK\n", crc, pts, i);
63 return 0;
64 }
65 else {
67 return -1;
68 }
69 }
70 }
72 return -1;
73 }
74
77 {
78 int number_of_written_bytes;
79 int got_frame = 0;
80 int result;
81 int end_of_stream = 0;
82 int byte_buffer_size;
84 int64_t crc;
86
88 byte_buffer =
av_malloc(byte_buffer_size);
89 if (!byte_buffer) {
92 }
93
94 if (!no_seeking) {
96 printf("Seeking to %"PRId64", computing crc for frames with pts < %"PRId64"\n", ts_start, ts_end);
97 if (result < 0) {
99 return result;
100 }
102 }
103
105 do {
106 if (!end_of_stream)
108 end_of_stream = 1;
109 if (end_of_stream) {
112 }
113 if (pkt.
stream_index == video_stream || end_of_stream) {
114 got_frame = 0;
117 return -1;
118 }
120 if (result < 0) {
122 return result;
123 }
124 if (got_frame) {
128 if (number_of_written_bytes < 0) {
130 return number_of_written_bytes;
131 }
132 if ((fr->
pkt_pts > ts_end) && (!no_seeking))
133 break;
135 printf(
"%10"PRId64
", 0x%08lx\n", fr->
pkt_pts, crc);
136 if (no_seeking) {
138 return -1;
139 }
140 else {
142 return -1;
143 }
144 }
145 }
149
152
153 return 0;
154 }
155
157 {
158 long int number;
159 char *end_of_string =
NULL;
160 number = strtol(string_with_number, &end_of_string, 10);
161 if ((strlen(string_with_number) != end_of_string - string_with_number) || (number < 0)) {
163 return -1;
164 }
165 else if ((number == LONG_MAX) || (number == LONG_MIN)) {
166 if (errno == ERANGE) {
168 return -1;
169 }
170 }
171 return number;
172 }
173
175 {
181 int result;
182 int i, j;
183 long int start_ts, end_ts;
184
188
190 if (result < 0) {
192 return result;
193 }
194
196 if (result < 0) {
198 return result;
199 }
200
203 if ((start_ts < 0) || (end_ts < 0))
204 return -1;
205
206 //TODO: add ability to work with audio format
208 if (video_stream < 0) {
210 return -1;
211 }
212
214
216 if (!codec) {
218 return -1;
219 }
220
222 if (!ctx) {
225 }
226
228 if (result) {
230 return result;
231 }
232
234 if (result < 0) {
236 return result;
237 }
238
240 if (!fr) {
243 }
244
246 if (result != 0)
247 return -1;
248
249 for (i = start_ts; i < end_ts; i += 100) {
250 for (j = i + 100; j < end_ts; j += 100)
252 if (result != 0)
253 return -1;
254 }
255
262 return 0;
263 }
264
265 int main(
int argc,
char **argv)
266 {
267 if (argc < 4) {
269 return 1;
270 }
271
273
274 if (
seek_test(argv[1], argv[2], argv[3]) != 0)
275 return 1;
276
277 return 0;
278 }
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
This structure describes decoded (raw) audio or video data.
int av_image_copy_to_buffer(uint8_t *dst, int dst_size, const uint8_t *const src_data[4], const int src_linesize[4], enum AVPixelFormat pix_fmt, int width, int height, int align)
Copy image data from an image into a buffer.
static AVFormatContext * fmt_ctx
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static AVStream * video_stream
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
Copy the settings of the source AVCodecContext into the destination AVCodecContext.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
static av_cold int end(AVCodecContext *avctx)
unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len)
Calculate the Adler32 checksum of a buffer.
AVStream ** streams
A list of all streams in the file.
static int seek_test(const char *input_filename, const char *start, const char *end)
int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags)
Find the "best" stream in the file.
int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static long int read_seek_range(const char *string_with_number)
AVCodecContext * codec
Codec context associated with this stream.
static int compute_crc_of_packets(AVFormatContext *fmt_ctx, int video_stream, AVCodecContext *ctx, AVFrame *fr, uint64_t ts_start, uint64_t ts_end, int no_seeking)
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
int width
picture width / height.
static const char * input_filename
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal decoder state / flush internal buffers.
Public header for libavutil Adler32 hasher.
static int add_crc_to_array(int64_t crc, int64_t pts)
Libavcodec external API header.
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer...
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
static int64_t pts
Global timestamp for the audio frames.
static int compare_crc_in_array(int64_t crc, int64_t pts)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
int64_t * pts_array
Seek test.
void * av_realloc(void *ptr, size_t size)
Allocate or reallocate a block of memory.
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
int main(int argc, char **argv)
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
This structure stores compressed data.
void av_register_all(void)
Initialize libavformat and register all the muxers, demuxers and protocols.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define AV_NOPTS_VALUE
Undefined timestamp value.