static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
static void av_frac_add(AVFrac *f, int64_t incr);
-static void av_frac_set(AVFrac *f, int64_t val);
/** head of registered input format linked list. */
AVInputFormat *first_iformat = NULL;
return fmt;
}
-/**
- * Guesses the codec id based upon muxer and filename.
- */
enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
const char *filename, const char *mime_type, enum CodecType type){
if(type == CODEC_TYPE_VIDEO){
return CODEC_ID_NONE;
}
-/**
- * finds AVInputFormat based on input format's short name.
- */
AVInputFormat *av_find_input_format(const char *short_name)
{
AVInputFormat *fmt;
/* memory handling */
-/**
- * Default packet destructor.
- */
void av_destruct_packet(AVPacket *pkt)
{
av_free(pkt->data);
pkt->data = NULL; pkt->size = 0;
}
-/**
- * Allocate the payload of a packet and intialized its fields to default values.
- *
- * @param pkt packet
- * @param size wanted payload size
- * @return 0 if OK. AVERROR_xxx otherwise.
- */
int av_new_packet(AVPacket *pkt, int size)
{
uint8_t *data;
return 0;
}
-/**
- * Allocate and read the payload of a packet and intialized its fields to default values.
- *
- * @param pkt packet
- * @param size wanted payload size
- * @return >0 (read size) if OK. AVERROR_xxx otherwise.
- */
int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
{
int ret= av_new_packet(pkt, size);
return ret;
}
-/* This is a hack - the packet memory allocation stuff is broken. The
- packet is allocated if it was not really allocated */
int av_dup_packet(AVPacket *pkt)
{
if (pkt->destruct != av_destruct_packet) {
return 0;
}
-/**
- * Allocate the payload of a packet and intialized its fields to default values.
- *
- * @param filename possible numbered sequence string
- * @return 1 if a valid numbered sequence string, 0 otherwise.
- */
int av_filename_number_test(const char *filename)
{
char buf[1024];
return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
}
-/**
- * Guess file format.
- */
-AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened)
+static AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
{
AVInputFormat *fmt1, *fmt;
- int score, score_max;
+ int score;
fmt = NULL;
- score_max = 0;
for(fmt1 = first_iformat; fmt1 != NULL; fmt1 = fmt1->next) {
- if (!is_opened && !(fmt1->flags & AVFMT_NOFILE))
+ if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
continue;
score = 0;
if (fmt1->read_probe) {
score = 50;
}
}
- if (score > score_max) {
- score_max = score;
+ if (score > *score_max) {
+ *score_max = score;
fmt = fmt1;
}
}
return fmt;
}
+AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
+ int score=0;
+ return av_probe_input_format2(pd, is_opened, &score);
+}
+
/************************************************************/
/* input media file */
{"genpts", "generate pts", 0, FF_OPT_TYPE_CONST, AVFMT_FLAG_GENPTS, INT_MIN, INT_MAX, D, "fflags"},
{"track", " set the track number", OFFSET(track), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
{"year", "set the year", OFFSET(year), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, E},
+{"analyzeduration", "how many microseconds are analyzed to estimate duration", OFFSET(max_analyze_duration), FF_OPT_TYPE_INT, 3*AV_TIME_BASE, 0, INT_MAX, D},
{NULL},
};
static const AVClass av_format_context_class = { "AVFormatContext", format_to_name, options };
-#if LIBAVFORMAT_VERSION_INT >= ((51<<16)+(0<<8)+0)
-static
-#endif
-void avformat_get_context_defaults(AVFormatContext *s){
+static void avformat_get_context_defaults(AVFormatContext *s)
+{
memset(s, 0, sizeof(AVFormatContext));
s->av_class = &av_format_context_class;
return ic;
}
-/**
- * Allocates all the structures needed to read an input stream.
- * This does not open the needed codecs for decoding the stream[s].
- */
int av_open_input_stream(AVFormatContext **ic_ptr,
ByteIOContext *pb, const char *filename,
AVInputFormat *fmt, AVFormatParameters *ap)
#define PROBE_BUF_MIN 2048
#define PROBE_BUF_MAX (1<<20)
-/**
- * Open a media file as input. The codec are not opened. Only the file
- * header (if present) is read.
- *
- * @param ic_ptr the opened media file handle is put here
- * @param filename filename to open.
- * @param fmt if non NULL, force the file format to use
- * @param buf_size optional buffer size (zero if default is OK)
- * @param ap additionnal parameters needed when opening the file (NULL if default)
- * @return 0 if OK. AVERROR_xxx otherwise.
- */
int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
AVInputFormat *fmt,
int buf_size,
if (!fmt || must_open_file) {
/* if no file needed do not try to open one */
- if (url_fopen(pb, filename, URL_RDONLY) < 0) {
- err = AVERROR_IO;
+ if ((err=url_fopen(pb, filename, URL_RDONLY)) < 0) {
goto fail;
}
file_opened = 1;
}
for(probe_size= PROBE_BUF_MIN; probe_size<=PROBE_BUF_MAX && !fmt; probe_size<<=1){
+ int score= probe_size < PROBE_BUF_MAX ? AVPROBE_SCORE_MAX/4 : 0;
/* read probe data */
- pd->buf= av_realloc(pd->buf, probe_size);
+ pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
pd->buf_size = get_buffer(pb, pd->buf, probe_size);
- if (url_fseek(pb, 0, SEEK_SET) == (offset_t)-EPIPE) {
+ if (url_fseek(pb, 0, SEEK_SET) < 0) {
url_fclose(pb);
if (url_fopen(pb, filename, URL_RDONLY) < 0) {
file_opened = 0;
}
}
/* guess file format */
- fmt = av_probe_input_format(pd, 1);
+ fmt = av_probe_input_format2(pd, 1, &score);
}
av_freep(&pd->buf);
}
}
/* XXX: suppress this hack for redirectors */
-#ifdef CONFIG_NETWORK
+#ifdef CONFIG_REDIR_DEMUXER
if (fmt == &redir_demuxer) {
err = redir_open(ic_ptr, pb);
url_fclose(pb);
/*******************************************************/
-/**
- * Read a transport packet from a media file.
- *
- * This function is absolete and should never be used.
- * Use av_read_frame() instead.
- *
- * @param s media file handle
- * @param pkt is filled
- * @return 0 if OK. AVERROR_xxx if error.
- */
int av_read_packet(AVFormatContext *s, AVPacket *pkt)
{
+ av_init_packet(pkt);
return s->iformat->read_packet(s, pkt);
}
static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
AVCodecParserContext *pc, AVPacket *pkt)
{
- int num, den, presentation_delayed;
+ int num, den, presentation_delayed, delay, i;
+ int64_t offset;
/* handle wrapping */
if(st->cur_dts != AV_NOPTS_VALUE){
if(pkt->pts != AV_NOPTS_VALUE)
}
}
+ /* correct timestamps with byte offset if demuxers only have timestamps on packet boundaries */
+ if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
+ /* this will estimate bitrate based on this frame's duration and size */
+ offset = av_rescale(pc->offset, pkt->duration, pkt->size);
+ if(pkt->pts != AV_NOPTS_VALUE)
+ pkt->pts += offset;
+ if(pkt->dts != AV_NOPTS_VALUE)
+ pkt->dts += offset;
+ }
+
if(is_intra_only(st->codec))
pkt->flags |= PKT_FLAG_KEY;
/* do we have a video B frame ? */
+ delay= st->codec->has_b_frames;
presentation_delayed = 0;
- if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- /* XXX: need has_b_frame, but cannot get it if the codec is
- not initialized */
- if (( st->codec->codec_id == CODEC_ID_H264
- || st->codec->has_b_frames) &&
- pc && pc->pict_type != FF_B_TYPE)
- presentation_delayed = 1;
- /* this may be redundant, but it shouldnt hurt */
- if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
- presentation_delayed = 1;
- }
+ /* XXX: need has_b_frame, but cannot get it if the codec is
+ not initialized */
+ if (delay &&
+ pc && pc->pict_type != FF_B_TYPE)
+ presentation_delayed = 1;
+ /* this may be redundant, but it shouldnt hurt */
+ if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
+ presentation_delayed = 1;
if(st->cur_dts == AV_NOPTS_VALUE){
- if(presentation_delayed) st->cur_dts = -pkt->duration;
- else st->cur_dts = 0;
+ st->cur_dts = -delay * pkt->duration;
}
// av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
/* interpolate PTS and DTS if they are not present */
- if (presentation_delayed) {
- /* DTS = decompression time stamp */
- /* PTS = presentation time stamp */
- if (pkt->dts == AV_NOPTS_VALUE) {
- /* if we know the last pts, use it */
- if(st->last_IP_pts != AV_NOPTS_VALUE)
- st->cur_dts = pkt->dts = st->last_IP_pts;
- else
+ if(delay <=1){
+ if (presentation_delayed) {
+ /* DTS = decompression time stamp */
+ /* PTS = presentation time stamp */
+ if (pkt->dts == AV_NOPTS_VALUE)
+ pkt->dts = st->last_IP_pts;
+ if (pkt->dts == AV_NOPTS_VALUE)
pkt->dts = st->cur_dts;
- } else {
- st->cur_dts = pkt->dts;
- }
- /* this is tricky: the dts must be incremented by the duration
- of the frame we are displaying, i.e. the last I or P frame */
- if (st->last_IP_duration == 0)
- st->cur_dts += pkt->duration;
- else
- st->cur_dts += st->last_IP_duration;
- st->last_IP_duration = pkt->duration;
- st->last_IP_pts= pkt->pts;
- /* cannot compute PTS if not present (we can compute it only
- by knowing the futur */
- } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
- if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
- int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
- int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
- if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
- pkt->pts += pkt->duration;
-// av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
- }
- }
- /* presentation is not delayed : PTS and DTS are the same */
- if (pkt->pts == AV_NOPTS_VALUE) {
- if (pkt->dts == AV_NOPTS_VALUE) {
- pkt->pts = st->cur_dts;
- pkt->dts = st->cur_dts;
+ /* this is tricky: the dts must be incremented by the duration
+ of the frame we are displaying, i.e. the last I or P frame */
+ if (st->last_IP_duration == 0)
+ st->last_IP_duration = pkt->duration;
+ st->cur_dts = pkt->dts + st->last_IP_duration;
+ st->last_IP_duration = pkt->duration;
+ st->last_IP_pts= pkt->pts;
+ /* cannot compute PTS if not present (we can compute it only
+ by knowing the futur */
+ } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
+ if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
+ int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
+ int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
+ if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
+ pkt->pts += pkt->duration;
+ // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
+ }
}
- else {
- st->cur_dts = pkt->dts;
+
+ /* presentation is not delayed : PTS and DTS are the same */
+ if(pkt->pts == AV_NOPTS_VALUE)
pkt->pts = pkt->dts;
- }
- } else {
- st->cur_dts = pkt->pts;
+ if(pkt->pts == AV_NOPTS_VALUE)
+ pkt->pts = st->cur_dts;
pkt->dts = pkt->pts;
+ st->cur_dts = pkt->pts + pkt->duration;
}
- st->cur_dts += pkt->duration;
}
-// av_log(NULL, AV_LOG_DEBUG, "OUTdelayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts);
+
+ if(pkt->pts != AV_NOPTS_VALUE){
+ st->pts_buffer[0]= pkt->pts;
+ for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
+ st->pts_buffer[i]= (i-delay-1) * pkt->duration;
+ for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
+ FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
+ if(pkt->dts == AV_NOPTS_VALUE)
+ pkt->dts= st->pts_buffer[0];
+ if(pkt->dts > st->cur_dts)
+ st->cur_dts = pkt->dts;
+ }
+
+// av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, delay, pkt->pts, pkt->dts, st->cur_dts);
/* update flags */
if (pc) {
pkt->flags = 0;
/* key frame computation */
- switch(st->codec->codec_type) {
- case CODEC_TYPE_VIDEO:
if (pc->pict_type == FF_I_TYPE)
pkt->flags |= PKT_FLAG_KEY;
- break;
- case CODEC_TYPE_AUDIO:
- pkt->flags |= PKT_FLAG_KEY;
- break;
- default:
- break;
- }
}
}
AVStream *st;
int len, ret, i;
+ av_init_packet(pkt);
+
for(;;) {
/* select current input stream component */
st = s->cur_st;
/* return packet if any */
if (pkt->size) {
got_packet:
+ pkt->pos = s->cur_pkt.pos; // Isn't quite accurate but close.
pkt->duration = 0;
pkt->stream_index = st->index;
pkt->pts = st->parser->pts;
pkt->dts = st->parser->dts;
pkt->destruct = av_destruct_packet_nofree;
compute_pkt_fields(s, st, st->parser, pkt);
+
+ if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & PKT_FLAG_KEY){
+ av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
+ 0, 0, AVINDEX_KEYFRAME);
+ }
+
break;
}
} else {
/* read next packet */
ret = av_read_packet(s, &s->cur_pkt);
if (ret < 0) {
- if (ret == -EAGAIN)
+ if (ret == AVERROR(EAGAIN))
return ret;
/* return the last frames, if any */
for(i = 0; i < s->nb_streams; i++) {
st->parser = av_parser_init(st->codec->codec_id);
if (!st->parser) {
/* no parser available : just output the raw packets */
- st->need_parsing = 0;
- }else if(st->need_parsing == 2){
+ st->need_parsing = AVSTREAM_PARSE_NONE;
+ }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
}
+ if(st->parser && (s->iformat->flags & AVFMT_GENERIC_INDEX)){
+ st->parser->last_frame_offset=
+ st->parser->cur_offset= s->cur_pkt.pos;
+ }
}
}
}
return 0;
}
-/**
- * Return the next frame of a stream.
- *
- * The returned packet is valid
- * until the next av_read_frame() or until av_close_input_file() and
- * must be freed with av_free_packet. For video, the packet contains
- * exactly one frame. For audio, it contains an integer number of
- * frames if each frame has a known fixed size (e.g. PCM or ADPCM
- * data). If the audio frames have a variable size (e.g. MPEG audio),
- * then it contains one frame.
- *
- * pkt->pts, pkt->dts and pkt->duration are always set to correct
- * values in AV_TIME_BASE unit (and guessed if the format cannot
- * provided them). pkt->pts can be AV_NOPTS_VALUE if the video format
- * has B frames, so it is better to rely on pkt->dts if you do not
- * decompress the payload.
- *
- * @return 0 if OK, < 0 if error or end of file.
- */
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
{
AVPacketList *pktl;
AVPacketList **plast_pktl= &s->packet_buffer;
int ret= av_read_frame_internal(s, pkt);
if(ret<0){
- if(pktl && ret != -EAGAIN){
+ if(pktl && ret != AVERROR(EAGAIN)){
eof=1;
continue;
}else
st->parser = NULL;
}
st->last_IP_pts = AV_NOPTS_VALUE;
- st->cur_dts = 0; /* we set the current DTS to an unspecified origin */
+ st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
}
}
-/**
- * Updates cur_dts of all streams based on given timestamp and AVStream.
- *
- * Stream ref_st unchanged, others set cur_dts in their native timebase
- * only needed for timestamp wrapping or if (dts not set and pts!=dts)
- * @param timestamp new dts expressed in time_base of param ref_st
- * @param ref_st reference stream giving time_base of param timestamp
- */
void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
int i;
}
}
-/**
- * Add a index entry into a sorted list updateing if it is already there.
- *
- * @param timestamp timestamp in the timebase of the given stream
- */
int av_add_index_entry(AVStream *st,
int64_t pos, int64_t timestamp, int size, int distance, int flags)
{
return 1;
}
-/**
- * Gets the index for a specific timestamp.
- * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond to
- * the timestamp which is <= the requested one, if backward is 0
- * then it will be >=
- * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise
- * @return < 0 if no such timestamp could be found
- */
int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
int flags)
{
#define DEBUG_SEEK
-/**
- * Does a binary search using av_index_search_timestamp() and AVCodec.read_timestamp().
- * this isnt supposed to be called directly by a user application, but by demuxers
- * @param target_ts target timestamp in the time base of the given stream
- * @param stream_index stream number
- */
int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
AVInputFormat *avif= s->iformat;
int64_t pos_min, pos_max, pos, pos_limit;
return 0;
}
-/**
- * Does a binary search using read_timestamp().
- * this isnt supposed to be called directly by a user application, but by demuxers
- * @param target_ts target timestamp in the time base of the given stream
- * @param stream_index stream number
- */
int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )){
int64_t pos, ts;
int64_t start_pos, filesize;
#ifdef DEBUG_SEEK
av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n", pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit, start_pos, no_change);
#endif
+ if(ts == AV_NOPTS_VALUE){
+ av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
+ return -1;
+ }
assert(ts != AV_NOPTS_VALUE);
if (target_ts <= ts) {
pos_limit = start_pos - 1;
AVStream *st;
AVIndexEntry *ie;
- if (!s->index_built) {
- if (is_raw_stream(s)) {
- av_build_index_raw(s);
- } else {
- return -1;
- }
- s->index_built = 1;
- }
-
st = s->streams[stream_index];
+
index = av_index_search_timestamp(st, timestamp, flags);
+
+ if(index < 0 || index==st->nb_index_entries-1){
+ int i;
+ AVPacket pkt;
+
+ if(st->index_entries && st->nb_index_entries){
+ ie= &st->index_entries[st->nb_index_entries-1];
+ url_fseek(&s->pb, ie->pos, SEEK_SET);
+ av_update_cur_dts(s, st, ie->timestamp);
+ }else
+ url_fseek(&s->pb, 0, SEEK_SET);
+
+ for(i=0;; i++) {
+ int ret = av_read_frame(s, &pkt);
+ if(ret<0)
+ break;
+ av_free_packet(&pkt);
+ if(stream_index == pkt.stream_index){
+ if((pkt.flags & PKT_FLAG_KEY) && pkt.dts > timestamp)
+ break;
+ }
+ }
+ index = av_index_search_timestamp(st, timestamp, flags);
+ }
if (index < 0)
return -1;
- /* now we have found the index, we can seek */
- ie = &st->index_entries[index];
av_read_frame_flush(s);
+ if (s->iformat->read_seek){
+ if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
+ return 0;
+ }
+ ie = &st->index_entries[index];
url_fseek(&s->pb, ie->pos, SEEK_SET);
av_update_cur_dts(s, st, ie->timestamp);
return 0;
}
-/**
- * Seek to the key frame at timestamp.
- * 'timestamp' in 'stream_index'.
- * @param stream_index If stream_index is (-1), a default
- * stream is selected, and timestamp is automatically converted
- * from AV_TIME_BASE units to the stream specific time_base.
- * @param timestamp timestamp in AVStream.time_base units
- * or if there is no stream specified then in AV_TIME_BASE units
- * @param flags flags which select direction and seeking mode
- * @return >= 0 on success
- */
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
{
int ret;
int i;
AVStream *st;
- start_time = MAXINT64;
- end_time = MININT64;
+ start_time = INT64_MAX;
+ end_time = INT64_MIN;
for(i = 0;i < ic->nb_streams; i++) {
st = ic->streams[i];
if (st->start_time != AV_NOPTS_VALUE) {
}
}
}
- if (start_time != MAXINT64) {
+ if (start_time != INT64_MAX) {
ic->start_time = start_time;
- if (end_time != MININT64) {
+ if (end_time != INT64_MIN) {
ic->duration = end_time - start_time;
if (ic->file_size > 0) {
/* compute the bit rate */
#define DURATION_MAX_READ_SIZE 250000
/* only usable for MPEG-PS streams */
-static void av_estimate_timings_from_pts(AVFormatContext *ic)
+static void av_estimate_timings_from_pts(AVFormatContext *ic, offset_t old_offset)
{
AVPacket pkt1, *pkt = &pkt1;
AVStream *st;
fill_all_stream_timings(ic);
- url_fseek(&ic->pb, 0, SEEK_SET);
+ url_fseek(&ic->pb, old_offset, SEEK_SET);
}
-static void av_estimate_timings(AVFormatContext *ic)
+static void av_estimate_timings(AVFormatContext *ic, offset_t old_offset)
{
int64_t file_size;
!strcmp(ic->iformat->name, "mpegts")) &&
file_size && !ic->pb.is_streamed) {
/* get accurate estimate from the PTSes */
- av_estimate_timings_from_pts(ic);
+ av_estimate_timings_from_pts(ic, old_offset);
} else if (av_has_timings(ic)) {
/* at least one components has timings - we use them for all
the components */
{
int16_t *samples;
AVCodec *codec;
- int got_picture, ret=0;
+ int got_picture, data_size, ret=0;
AVFrame picture;
if(!st->codec->codec){
&got_picture, (uint8_t *)data, size);
break;
case CODEC_TYPE_AUDIO:
- samples = av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE);
+ data_size = FFMAX(size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
+ samples = av_malloc(data_size);
if (!samples)
goto fail;
- ret = avcodec_decode_audio(st->codec, samples,
- &got_picture, (uint8_t *)data, size);
+ ret = avcodec_decode_audio2(st->codec, samples,
+ &data_size, (uint8_t *)data, size);
av_free(samples);
break;
default:
return ret;
}
+static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
+{
+ AVInputFormat *fmt;
+ fmt = av_probe_input_format2(pd, 1, &score);
+
+ if (fmt) {
+ if (strncmp(fmt->name, "mp3", 3) == 0)
+ st->codec->codec_id = CODEC_ID_MP3;
+ else if (strncmp(fmt->name, "ac3", 3) == 0)
+ st->codec->codec_id = CODEC_ID_AC3;
+ }
+ return !!fmt;
+}
+
/* absolute maximum size we read until we abort */
#define MAX_READ_SIZE 5000000
-/* maximum duration until we stop analysing the stream */
-#define MAX_STREAM_DURATION ((int)(AV_TIME_BASE * 3.0))
+#define MAX_STD_TIMEBASES (60*12+5)
+static int get_std_framerate(int i){
+ if(i<60*12) return i*1001;
+ else return ((int[]){24,30,60,12,15})[i-60*12]*1000*12;
+}
-/**
- * Read the beginning of a media file to get stream information. This
- * is useful for file formats with no headers such as MPEG. This
- * function also compute the real frame rate in case of mpeg2 repeat
- * frame mode.
- *
- * @param ic media file handle
- * @return >=0 if OK. AVERROR_xxx if error.
- * @todo let user decide somehow what information is needed so we dont waste time geting stuff the user doesnt need
- */
int av_find_stream_info(AVFormatContext *ic)
{
int i, count, ret, read_size, j;
AVPacket pkt1, *pkt;
AVPacketList *pktl=NULL, **ppktl;
int64_t last_dts[MAX_STREAMS];
- int64_t duration_sum[MAX_STREAMS];
int duration_count[MAX_STREAMS]={0};
+ double (*duration_error)[MAX_STD_TIMEBASES];
+ offset_t old_offset = url_ftell(&ic->pb);
+ int64_t codec_info_duration[MAX_STREAMS]={0};
+ int codec_info_nb_frames[MAX_STREAMS]={0};
+ AVProbeData probe_data[MAX_STREAMS];
+ int codec_identified[MAX_STREAMS]={0};
+
+ duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
+ if (!duration_error) return AVERROR_NOMEM;
for(i=0;i<ic->nb_streams;i++) {
st = ic->streams[i];
//only for the split stuff
if (!st->parser) {
st->parser = av_parser_init(st->codec->codec_id);
- if(st->need_parsing == 2 && st->parser){
+ if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
}
}
for(i=0;i<MAX_STREAMS;i++){
last_dts[i]= AV_NOPTS_VALUE;
- duration_sum[i]= INT64_MAX;
}
+ memset(probe_data, 0, sizeof(probe_data));
count = 0;
read_size = 0;
ppktl = &ic->packet_buffer;
if (!has_codec_parameters(st->codec))
break;
/* variable fps and no guess at the real fps */
- if( st->codec->time_base.den >= 101LL*st->codec->time_base.num
+ if( (st->codec->time_base.den >= 101LL*st->codec->time_base.num || st->codec->codec_id == CODEC_ID_MPEG2VIDEO)
&& duration_count[i]<20 && st->codec->codec_type == CODEC_TYPE_VIDEO)
break;
if(st->parser && st->parser->parser->split && !st->codec->extradata)
break;
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
+ st->codec->codec_id == CODEC_ID_NONE)
+ break;
}
if (i == ic->nb_streams) {
/* NOTE: if the format has no header, then we need to read
read_size += pkt->size;
st = ic->streams[pkt->stream_index];
- st->codec_info_duration += pkt->duration;
+ if(codec_info_nb_frames[st->index]>1)
+ codec_info_duration[st->index] += pkt->duration;
if (pkt->duration != 0)
- st->codec_info_nb_frames++;
+ codec_info_nb_frames[st->index]++;
{
int index= pkt->stream_index;
int64_t duration= pkt->dts - last;
if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
- if(duration*duration_count[index]*10/9 < duration_sum[index]){
- duration_sum[index]= duration;
- duration_count[index]=1;
- }else{
- int factor= av_rescale(2*duration, duration_count[index], duration_sum[index]);
- if(factor==3)
- duration_count[index] *= 2;
- factor= av_rescale(duration, duration_count[index], duration_sum[index]);
- duration_sum[index] += duration;
- duration_count[index]+= factor;
+ double dur= duration * av_q2d(st->time_base);
+
+// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
+// av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
+ if(duration_count[index] < 2)
+ memset(duration_error, 0, MAX_STREAMS * sizeof(*duration_error));
+ for(i=1; i<MAX_STD_TIMEBASES; i++){
+ int framerate= get_std_framerate(i);
+ int ticks= lrintf(dur*framerate/(1001*12));
+ double error= dur - ticks*1001*12/(double)framerate;
+ duration_error[index][i] += error*error;
}
- if(st->codec_info_nb_frames == 0 && 0)
- st->codec_info_duration += duration;
+ duration_count[index]++;
+ }
+ if(last == AV_NOPTS_VALUE || duration_count[index]<=1)
+ last_dts[pkt->stream_index]= pkt->dts;
+
+ if (st->codec->codec_id == CODEC_ID_NONE) {
+ AVProbeData *pd = &(probe_data[st->index]);
+ pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size);
+ memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
+ pd->buf_size += pkt->size;
}
- last_dts[pkt->stream_index]= pkt->dts;
}
if(st->parser && st->parser->parser->split && !st->codec->extradata){
int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
(st->codec->codec_id == CODEC_ID_MPEG4 && !st->need_parsing))*/)
try_decode_frame(st, pkt->data, pkt->size);
- if (av_rescale_q(st->codec_info_duration, st->time_base, AV_TIME_BASE_Q) >= MAX_STREAM_DURATION) {
+ if (av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration) {
break;
}
count++;
st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
if(duration_count[i]
- && (st->codec->time_base.num*101LL <= st->codec->time_base.den || st->codec->codec_id == CODEC_ID_MPEG2VIDEO) &&
+ && (st->codec->time_base.num*101LL <= st->codec->time_base.den || st->codec->codec_id == CODEC_ID_MPEG2VIDEO) /*&&
//FIXME we should not special case mpeg2, but this needs testing with non mpeg2 ...
- st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den){
- int64_t num, den, error, best_error;
-
- num= st->time_base.den*duration_count[i];
- den= st->time_base.num*duration_sum[i];
-
- best_error= INT64_MAX;
- for(j=1; j<60*12; j++){
- error= FFABS(1001*12*num - 1001*j*den);
+ st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den*/){
+ double best_error= 2*av_q2d(st->time_base);
+ best_error= best_error*best_error*duration_count[i]*1000*12*30;
+
+ for(j=1; j<MAX_STD_TIMEBASES; j++){
+ double error= duration_error[i][j] * get_std_framerate(j);
+// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
+// av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
if(error < best_error){
best_error= error;
- av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, j, 12, INT_MAX);
- }
- }
- for(j=0; j<3; j++){
- static const int ticks[]= {24,30,60};
- error= FFABS(1001*12*num - 1000*12*den * ticks[j]);
- if(error < best_error){
- best_error= error;
- av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, ticks[j]*1000, 1001, INT_MAX);
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, get_std_framerate(j), 12*1001, INT_MAX);
}
}
}
st->r_frame_rate.den = st->time_base.num;
}
}
+ }else if(st->codec->codec_type == CODEC_TYPE_AUDIO) {
+ if (st->codec->codec_id == CODEC_ID_NONE) {
+ codec_identified[st->index] = set_codec_from_probe_data(st, &(probe_data[st->index]), 0);
+ if (codec_identified[st->index]) {
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ }
+ }
+ if(!st->codec->bits_per_sample)
+ st->codec->bits_per_sample= av_get_bits_per_sample(st->codec->codec_id);
+ }
+ }
+
+ av_estimate_timings(ic, old_offset);
+
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ if (codec_identified[st->index]) {
+ av_read_frame_flush(ic);
+ av_seek_frame(ic, st->index, 0.0, 0);
+ url_fseek(&ic->pb, ic->data_offset, SEEK_SET);
}
}
- av_estimate_timings(ic);
#if 0
/* correct DTS for b frame streams with no timestamps */
for(i=0;i<ic->nb_streams;i++) {
}
}
#endif
+
+ av_free(duration_error);
+ for(i=0;i<MAX_STREAMS;i++){
+ av_freep(&(probe_data[i].buf));
+ }
+
return ret;
}
/*******************************************************/
-/**
- * start playing a network based stream (e.g. RTSP stream) at the
- * current position
- */
int av_read_play(AVFormatContext *s)
{
if (!s->iformat->read_play)
return s->iformat->read_play(s);
}
-/**
- * Pause a network based stream (e.g. RTSP stream).
- *
- * Use av_read_play() to resume it.
- */
int av_read_pause(AVFormatContext *s)
{
if (!s->iformat->read_pause)
return s->iformat->read_pause(s);
}
-/**
- * Close a media file (but not its codecs).
- *
- * @param s media file handle
- */
void av_close_input_file(AVFormatContext *s)
{
int i, must_open_file;
av_free(s);
}
-/**
- * Add a new stream to a media file.
- *
- * Can only be called in the read_header() function. If the flag
- * AVFMTCTX_NOHEADER is in the format context, then new streams
- * can be added in read_packet too.
- *
- * @param s media file handle
- * @param id file format dependent stream id
- */
AVStream *av_new_stream(AVFormatContext *s, int id)
{
AVStream *st;
return 0;
}
-/**
- * allocate the stream private data and write the stream header to an
- * output media file
- *
- * @param s media file handle
- * @return 0 if OK. AVERROR_xxx if error.
- */
int av_write_header(AVFormatContext *s)
{
int ret, i;
}
break;
}
+
+ if(s->oformat->codec_tag){
+ if(st->codec->codec_tag){
+ //FIXME
+ //check that tag + id is in the table
+ //if neither is in the table -> ok
+ //if tag is in the table with another id -> FAIL
+ //if id is in the table with another tag -> FAIL unless strict < ?
+ }else
+ st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
+ }
+ }
+
+ if (!s->priv_data && s->oformat->priv_data_size > 0) {
+ s->priv_data = av_mallocz(s->oformat->priv_data_size);
+ if (!s->priv_data)
+ return AVERROR_NOMEM;
}
if(s->oformat->write_header){
pkt->dts &= pts_mask;
}
-/**
- * Write a packet to an output media file.
- *
- * The packet shall contain one audio or video frame.
- *
- * @param s media file handle
- * @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
- * @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
- */
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
{
int ret;
return ret;
}
-/**
- * Interleave a packet per DTS in an output media file.
- *
- * Packets with pkt->destruct == av_destruct_packet will be freed inside this function,
- * so they cannot be used after it, note calling av_free_packet() on them is still safe.
- *
- * @param s media file handle
- * @param out the interleaved packet will be output here
- * @param in the input packet
- * @param flush 1 if no further packets are available as input and all
- * remaining packets should be output
- * @return 1 if a packet was output, 0 if no packet could be output,
- * < 0 if an error occured
- */
int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
AVPacketList *pktl, **next_point, *this_pktl;
int stream_count=0;
return av_interleave_packet_per_dts(s, out, in, flush);
}
-/**
- * Writes a packet to an output media file ensuring correct interleaving.
- *
- * The packet must contain one audio or video frame.
- * If the packets are already correctly interleaved the application should
- * call av_write_frame() instead as its slightly faster, its also important
- * to keep in mind that completly non interleaved input will need huge amounts
- * of memory to interleave with this, so its prefereable to interleave at the
- * demuxer level
- *
- * @param s media file handle
- * @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
- * @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
- */
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
AVStream *st= s->streams[ pkt->stream_index];
}
}
-/**
- * @brief Write the stream trailer to an output media file and
- * free the file private data.
- *
- * @param s media file handle
- * @return 0 if OK. AVERROR_xxx if error.
- */
int av_write_trailer(AVFormatContext *s)
{
int ret, i;
{ "qcif", 176, 144, 0, 0 },
{ "cif", 352, 288, 0, 0 },
{ "4cif", 704, 576, 0, 0 },
+ { "qqvga", 160, 120, 0, 0 },
+ { "qvga", 320, 240, 0, 0 },
+ { "vga", 640, 480, 0, 0 },
+ { "svga", 800, 600, 0, 0 },
+ { "xga", 1024, 768, 0, 0 },
+ { "uxga", 1600,1200, 0, 0 },
+ { "qxga", 2048,1536, 0, 0 },
+ { "sxga", 1280,1024, 0, 0 },
+ { "qsxga", 2560,2048, 0, 0 },
+ { "hsxga", 5120,4096, 0, 0 },
+ { "wvga", 852, 480, 0, 0 },
+ { "wxga", 1366, 768, 0, 0 },
+ { "wsxga", 1600,1024, 0, 0 },
+ { "wuxga", 1920,1200, 0, 0 },
+ { "woxga", 2560,1600, 0, 0 },
+ { "wqsxga", 3200,2048, 0, 0 },
+ { "wquxga", 3840,2400, 0, 0 },
+ { "whsxga", 6400,4096, 0, 0 },
+ { "whuxga", 7680,4800, 0, 0 },
+ { "cga", 320, 200, 0, 0 },
+ { "ega", 640, 350, 0, 0 },
+ { "hd480", 852, 480, 0, 0 },
+ { "hd720", 1280, 720, 0, 0 },
+ { "hd1080", 1920,1080, 0, 0 },
};
-/**
- * parses width and height out of string str.
- */
int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
{
int i;
return 0;
}
-/**
- * Converts frame rate from string to a fraction.
- *
- * First we try to get an exact integer or fractional frame rate.
- * If this fails we convert the frame rate to a double and return
- * an approximate fraction using the DEFAULT_FRAME_RATE_BASE.
- */
int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg)
{
int i;
return 0;
}
-/**
- * Converts date string to number of seconds since Jan 1st, 1970.
- *
- * @code
- * Syntax:
- * - If not a duration:
- * [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
- * Time is localtime unless Z is suffixed to the end. In this case GMT
- * Return the date in micro seconds since 1970
- *
- * - If a duration:
- * HH[:MM[:SS[.m...]]]
- * S+[.m...]
- * @endcode
- */
-#ifndef CONFIG_WINCE
int64_t parse_date(const char *datestr, int duration)
{
const char *p;
}
return negative ? -t : t;
}
-#endif /* CONFIG_WINCE */
-/**
- * Attempts to find a specific tag in a URL.
- *
- * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
- * Return 1 if found.
- */
int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
{
const char *p;
return 0;
}
-/**
- * Returns in 'buf' the path with '%d' replaced by number.
-
- * Also handles the '%0nd' format where 'n' is the total number
- * of digits and '%%'.
- *
- * @param buf destination buffer
- * @param buf_size destination buffer size
- * @param path numbered sequence string
- * @number frame number
- * @return 0 if OK, -1 if format error.
- */
int av_get_frame_filename(char *buf, int buf_size,
const char *path, int number)
{
return -1;
}
-/**
- * Print nice hexa dump of a buffer
- * @param f stream for output
- * @param buf buffer
- * @param size buffer size
- */
-void av_hex_dump(FILE *f, uint8_t *buf, int size)
+static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
{
int len, i, j, c;
+#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
for(i=0;i<size;i+=16) {
len = size - i;
if (len > 16)
len = 16;
- fprintf(f, "%08x ", i);
+ PRINT("%08x ", i);
for(j=0;j<16;j++) {
if (j < len)
- fprintf(f, " %02x", buf[i+j]);
+ PRINT(" %02x", buf[i+j]);
else
- fprintf(f, " ");
+ PRINT(" ");
}
- fprintf(f, " ");
+ PRINT(" ");
for(j=0;j<len;j++) {
c = buf[i+j];
if (c < ' ' || c > '~')
c = '.';
- fprintf(f, "%c", c);
+ PRINT("%c", c);
}
- fprintf(f, "\n");
+ PRINT("\n");
}
+#undef PRINT
+}
+
+void av_hex_dump(FILE *f, uint8_t *buf, int size)
+{
+ hex_dump_internal(NULL, f, 0, buf, size);
+}
+
+void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
+{
+ hex_dump_internal(avcl, NULL, level, buf, size);
}
-/**
- * Print on 'f' a nice dump of a packet
- * @param f stream for output
- * @param pkt packet to dump
- * @param dump_payload true if the payload must be displayed too
- */
//FIXME needs to know the time_base
-void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
+static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
{
- fprintf(f, "stream #%d:\n", pkt->stream_index);
- fprintf(f, " keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
- fprintf(f, " duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
+#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
+ PRINT("stream #%d:\n", pkt->stream_index);
+ PRINT(" keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
+ PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
/* DTS is _always_ valid after av_read_frame() */
- fprintf(f, " dts=");
+ PRINT(" dts=");
if (pkt->dts == AV_NOPTS_VALUE)
- fprintf(f, "N/A");
+ PRINT("N/A");
else
- fprintf(f, "%0.3f", (double)pkt->dts / AV_TIME_BASE);
+ PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
/* PTS may be not known if B frames are present */
- fprintf(f, " pts=");
+ PRINT(" pts=");
if (pkt->pts == AV_NOPTS_VALUE)
- fprintf(f, "N/A");
+ PRINT("N/A");
else
- fprintf(f, "%0.3f", (double)pkt->pts / AV_TIME_BASE);
- fprintf(f, "\n");
- fprintf(f, " size=%d\n", pkt->size);
+ PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
+ PRINT("\n");
+ PRINT(" size=%d\n", pkt->size);
+#undef PRINT
if (dump_payload)
av_hex_dump(f, pkt->data, pkt->size);
}
+void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
+{
+ pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
+}
+
+void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
+{
+ pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
+}
+
void url_split(char *proto, int proto_size,
char *authorization, int authorization_size,
char *hostname, int hostname_size,
pstrcpy(path, path_size, p);
}
-/**
- * Set the pts for a given stream.
- *
- * @param s stream
- * @param pts_wrap_bits number of bits effectively used by the pts
- * (used for wrap control, 33 is the value for MPEG)
- * @param pts_num numerator to convert to seconds (MPEG: 1)
- * @param pts_den denominator to convert to seconds (MPEG: 90000)
- */
void av_set_pts_info(AVStream *s, int pts_wrap_bits,
int pts_num, int pts_den)
{
f->den = den;
}
-/**
- * Set f to (val + 0.5).
- */
-static void av_frac_set(AVFrac *f, int64_t val)
-{
- f->val = val;
- f->num = f->den >> 1;
-}
-
/**
* Fractionnal addition to f: f = f + (incr / f->den).
*
projects / ffmpeg / blobdiff