62 printf(
"Comparing 0x%08"PRIx32
" %"PRId64
" %d is OK\n", crc,
pts,
i);
77 uint64_t ts_start, uint64_t ts_end,
int no_seeking)
79 int number_of_written_bytes;
86 byte_buffer =
av_malloc(byte_buffer_size);
94 printf(
"Seeking to %"PRId64
", computing crc for frames with pts < %"PRId64
"\n", ts_start, ts_end);
126 while (result >= 0) {
130 else if (result ==
AVERROR(EAGAIN)) {
133 }
else if (result < 0) {
140 ctx->pix_fmt,
ctx->width,
ctx->height, 1);
141 if (number_of_written_bytes < 0) {
143 return number_of_written_bytes;
145 if ((!no_seeking) && (fr->
pts > ts_end))
148 printf(
"%10"PRId64
", 0x%08"PRIx32
"\n", fr->
pts, crc);
159 }
while (result >= 0 && (no_seeking || (fr->
pts + fr->
pkt_duration <= ts_end)));
170 char *end_of_string =
NULL;
171 number = strtol(string_with_number, &end_of_string, 10);
172 if ((strlen(string_with_number) != end_of_string - string_with_number) || (number < 0)) {
176 else if ((number == LONG_MAX) || (number == LONG_MIN)) {
177 if (errno == ERANGE) {
196 long int start_ts, end_ts;
217 if ((start_ts < 0) || (end_ts < 0)) {
276 for (
i = start_ts;
i < end_ts;
i += 100) {
277 for (j =
i + 100; j < end_ts; j += 100) {
294 int main(
int argc,
char **argv)
301 if (
seek_test(argv[1], argv[2], argv[3]) != 0)
Public header for Adler-32 hash function implementation.
static int add_crc_to_array(uint32_t crc, int64_t pts)
static int compute_crc_of_packets(AVFormatContext *fmt_ctx, int video_stream, AVCodecContext *ctx, AVPacket *pkt, AVFrame *fr, uint64_t ts_start, uint64_t ts_end, int no_seeking)
int main(int argc, char **argv)
static long int read_seek_range(const char *string_with_number)
static int seek_test(const char *input_filename, const char *start, const char *end)
int64_t * pts_array
Seek test.
static int compare_crc_in_array(uint32_t crc, int64_t pts)
Libavcodec external API header.
static AVFormatContext * fmt_ctx
static AVStream * video_stream
static const char * input_filename
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal codec state / flush internal buffers.
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
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 avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
int avformat_open_input(AVFormatContext **ps, const char *url, ff_const59 AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len)
Calculate the Adler32 checksum of a buffer.
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
#define AVERROR_EOF
End of file.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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.
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.
#define AV_NOPTS_VALUE
Undefined timestamp value.
main external API structure.
This struct describes the properties of an encoded stream.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVStream ** streams
A list of all streams in the file.
This structure describes decoded (raw) audio or video data.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
AVCodecParameters * codecpar
Codec parameters associated with this stream.
#define av_realloc_f(p, o, n)