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63 printf(
"Comparing 0x%08"PRIx32
" %"PRId64
" %d is OK\n",
crc,
pts,
i);
78 uint64_t ts_start, uint64_t ts_end,
int no_seeking)
80 int number_of_written_bytes;
87 byte_buffer =
av_malloc(byte_buffer_size);
95 printf(
"Seeking to %"PRId64
", computing crc for frames with pts < %"PRId64
"\n", ts_start, ts_end);
140 (
const uint8_t*
const *)fr->
data, (
const int*) fr->
linesize,
141 ctx->pix_fmt,
ctx->width,
ctx->height, 1);
142 if (number_of_written_bytes < 0) {
144 return number_of_written_bytes;
146 if ((!no_seeking) && (fr->
pts > ts_end))
171 char *end_of_string =
NULL;
172 number = strtol(string_with_number, &end_of_string, 10);
173 if ((strlen(string_with_number) != end_of_string - string_with_number) || (number < 0)) {
177 else if ((number == LONG_MAX) || (number == LONG_MIN)) {
178 if (errno == ERANGE) {
197 long int start_ts, end_ts;
218 if ((start_ts < 0) || (end_ts < 0)) {
277 for (
i = start_ts;
i < end_ts;
i += 100) {
278 for (j =
i + 100; j < end_ts; j += 100) {
295 int main(
int argc,
char **argv)
302 if (
seek_test(argv[1], argv[2], argv[3]) != 0)
static int compare_crc_in_array(uint32_t crc, int64_t pts)
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
This struct describes the properties of an encoded stream.
int64_t duration
Duration of the frame, in the same units as pts.
#define AVERROR_EOF
End of file.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
AVStream ** streams
A list of all streams in the file.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
static int add_crc_to_array(uint32_t crc, int64_t pts)
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 avformat_open_input(AVFormatContext **ps, const char *url, const AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
static long int read_seek_range(const char *string_with_number)
static AVStream * video_stream
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder or encoder (when the AV_CODEC_FLAG_RECON_FRAME flag is used...
#define av_realloc_f(p, o, n)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avcodec_parameters_to_context(AVCodecContext *codec, const struct AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
and forward the result(frame or status change) to the corresponding input. If nothing is possible
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer.
static int seek_test(const char *input_filename, const char *start, const char *end)
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
AVAdler av_adler32_update(AVAdler adler, const uint8_t *buf, size_t len)
Calculate the Adler32 checksum of a buffer.
const AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
static AVFormatContext * fmt_ctx
#define AV_NOPTS_VALUE
Undefined timestamp value.
printf("static const uint8_t my_array[100] = {\n")
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.
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
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 avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
#define i(width, name, range_min, range_max)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal codec state / flush internal buffers.
main external API structure.
static const char * input_filename
#define AVERROR_DECODER_NOT_FOUND
Decoder not found.
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.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
int main(int argc, char **argv)
int64_t * pts_array
Seek test.