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added stream start time and duration API - AV_NOPTS_VALUE is no longer zero

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Originally committed as revision 2108 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2003-08-08 17:49:27 +00:00
parent c965f94346
commit ee40480319
1 changed files with 34 additions and 4 deletions
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38
libavformat/avformat.h
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@ -7,7 +7,7 @@ extern "C" {
#define LIBAVFORMAT_VERSION_INT 0x000406
#define LIBAVFORMAT_VERSION "0.4.6"
#define LIBAVFORMAT_BUILD 4605
#define LIBAVFORMAT_BUILD 4606
#include "avcodec.h"
@ -15,7 +15,16 @@ extern "C" {
/* packet functions */
#define AV_NOPTS_VALUE 0
#ifndef MAXINT64
#define MAXINT64 int64_t_C(0x7fffffffffffffff)
#endif
#ifndef MININT64
#define MININT64 int64_t_C(0x8000000000000000)
#endif
#define AV_NOPTS_VALUE MININT64
#define AV_TIME_BASE 1000000
typedef struct AVPacket {
int64_t pts; /* presentation time stamp in stream units (set av_set_pts_info) */
@ -164,7 +173,6 @@ typedef struct AVStream {
AVCodecContext codec; /* codec context */
int r_frame_rate; /* real frame rate of the stream */
int r_frame_rate_base;/* real frame rate base of the stream */
uint64_t time_length; /* real length of the stream in miliseconds */
void *priv_data;
/* internal data used in av_find_stream_info() */
int codec_info_state;
@ -177,6 +185,12 @@ typedef struct AVStream {
/* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
* MN:dunno if thats the right place, for it */
float quality;
/* decoding: position of the first frame of the component, in
AV_TIME_BASE fractional seconds. */
int64_t start_time;
/* decoding: duration of the stream, in AV_TIME_BASE fractional
seconds. */
int64_t duration;
} AVStream;
#define MAX_STREAMS 20
@ -203,7 +217,22 @@ typedef struct AVFormatContext {
/* This buffer is only needed when packets were already buffered but
not decoded, for example to get the codec parameters in mpeg
streams */
struct AVPacketList *packet_buffer;
struct AVPacketList *packet_buffer;
/* decoding: position of the first frame of the component, in
AV_TIME_BASE fractional seconds. NEVER set this value directly:
it is deduced from the AVStream values. */
int64_t start_time;
/* decoding: duration of the stream, in AV_TIME_BASE fractional
seconds. NEVER set this value directly: it is deduced from the
AVStream values. */
int64_t duration;
/* decoding: total file size. 0 if unknown */
int64_t file_size;
/* decoding: total stream bitrate in bit/s, 0 if not
available. Never set it directly if the file_size and the
duration are known as ffmpeg can compute it automatically. */
int bit_rate;
} AVFormatContext;
typedef struct AVPacketList {
@ -274,6 +303,7 @@ extern AVImageFormat gif_image_format;
/* modules */
/* mpeg.c */
extern AVInputFormat mpegps_demux;
int mpegps_init(void);
/* mpegts.c */