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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_STHEADER_H
#define MPLAYER_STHEADER_H
#include <stdbool.h>
#include "codec_tags.h"
#include "aviheader.h"
#include "ms_hdr.h"
struct MPOpts;
struct demuxer;
enum stream_type {
STREAM_VIDEO,
STREAM_AUDIO,
STREAM_SUB,
STREAM_TYPE_COUNT,
};
// Stream headers:
struct sh_stream {
enum stream_type type;
struct demuxer *demuxer;
// Index into demuxer->streams.
int index;
// Index into stream array (currently one array per type, e.g. a_streams).
int stream_index;
// Demuxer/format specific ID. Corresponds to the stream IDs as encoded in
// some file formats (e.g. MPEG), or an index chosen by demux.c.
int demuxer_id;
// One of these is non-NULL, the others are NULL, depending on the stream
// type.
struct sh_audio *audio;
struct sh_video *video;
struct sh_sub *sub;
// E.g. "h264" (usually corresponds to AVCodecDescriptor.name)
const char *codec;
// Codec specific header data (set by demux_lavf.c)
// Other demuxers use sh_audio->wf and sh_video->bih instead.
struct AVCodecContext *lav_headers;
char *title;
char *lang; // language code
bool default_track; // container default track flag
bool attached_picture; // stream is a picture (such as album art)
// Human readable description of the running decoder, or NULL
char *decoder_desc;
// shouldn't exist type of stuff
struct MPOpts *opts;
};
#define SH_COMMON \
struct sh_stream *gsh; \
struct MPOpts *opts; \
struct demux_stream *ds; \
/* usually a FourCC, exact meaning depends on gsh->format */ \
unsigned int format; \
int initialized; \
/* number of seconds stream should be delayed \
* (according to dwStart or similar) */ \
float stream_delay; \
/* audio: last known pts value in output from decoder \
* video: predicted/interpolated PTS of the current frame */ \
double pts; \
/* decoder context */ \
void *context; \
typedef struct sh_audio {
SH_COMMON
// output format:
int sample_format;
int samplerate;
int container_out_samplerate;
int samplesize;
int channels;
int o_bps; // == samplerate*samplesize*channels (uncompr. bytes/sec)
int i_bps; // == bitrate (compressed bytes/sec)
// in buffers:
int audio_in_minsize; // initial size to allocate for a_in_buffer if any
char *a_in_buffer; // input buffer used by some decoders
int a_in_buffer_len;
int a_in_buffer_size;
// decoder buffers:
int audio_out_minsize; // minimal output from decoder may be this much
char *a_buffer; // buffer for decoder output
int a_buffer_len;
int a_buffer_size;
struct af_stream *afilter; // the audio filter stream
const struct ad_functions *ad_driver;
// win32-compatible codec parameters:
AVIStreamHeader audio;
WAVEFORMATEX *wf;
// note codec extradata may be either under "wf" or "codecdata"
unsigned char *codecdata;
int codecdata_len;
int pts_bytes; // bytes output by decoder after last known pts
/* things needed for parsing */
bool needs_parsing;
struct AVCodecContext *avctx;
struct AVCodecParserContext *parser;
} sh_audio_t;
typedef struct sh_video {
SH_COMMON
double i_pts; // PTS for the _next_ I/P frame (internal mpeg demuxing)
float next_frame_time;
double last_pts;
double buffered_pts[32];
int num_buffered_pts;
double codec_reordered_pts;
double prev_codec_reordered_pts;
int num_reordered_pts_problems;
double sorted_pts;
double prev_sorted_pts;
int num_sorted_pts_problems;
int pts_assoc_mode;
// output format: (set by demuxer)
float fps; // frames per second (set only if constant fps)
float frametime; // 1/fps
float aspect; // aspect ratio stored in the file (for prescaling)
float stream_aspect; // aspect ratio in media headers (DVD IFO files)
int i_bps; // == bitrate (compressed bytes/sec)
int disp_w, disp_h; // display size (filled by demuxer)
int colorspace; // mp_csp
int color_range; // mp_csp_levels
// output driver/filters: (set by libmpcodecs core)
unsigned int outfmt;
struct vf_instance *vfilter; // video filter chain
int output_flags; // query_format() results for output filters+vo
const struct vd_functions *vd_driver;
int vf_initialized; // -1 failed, 0 not done, 1 done
// win32-compatible codec parameters:
AVIStreamHeader video;
BITMAPINFOHEADER *bih;
} sh_video_t;
typedef struct sh_sub {
SH_COMMON
bool active; // after track switch decoder may stay initialized, not active
unsigned char *extradata; // extra header data passed from demuxer
int extradata_len;
const struct sd_functions *sd_driver;
} sh_sub_t;
// demuxer.c:
#define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
struct sh_audio *new_sh_audio_aid(struct demuxer *demuxer, int id, int aid);
#define new_sh_video(d, i) new_sh_video_vid(d, i, i)
struct sh_video *new_sh_video_vid(struct demuxer *demuxer, int id, int vid);
#define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
struct sh_sub *new_sh_sub_sid(struct demuxer *demuxer, int id, int sid);
struct sh_sub *new_sh_sub_sid_lang(struct demuxer *demuxer, int id, int sid,
const char *lang);
struct sh_stream *new_sh_stream(struct demuxer *demuxer, enum stream_type type);
// video.c:
int video_read_properties(struct sh_video *sh_video);
int video_read_frame(struct sh_video *sh_video, float *frame_time_ptr,
unsigned char **start, int force_fps);
#endif /* MPLAYER_STHEADER_H */
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