mpv/libmpdemux/stheader.h

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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 "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;
// The (possibly) type specific id, e.g. aid or sid.
int tid;
// Index into stream array (currently one array per type, e.g. a_streams).
int stream_index;
// Demuxer specific ID (always set, defaults to tid).
int demuxer_id;
// Abomination.
struct sh_common *common_header;
// 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;
char *title;
bool default_track;
// shouldn't exist type of stuff
struct MPOpts *opts;
};
#define SH_COMMON \
struct sh_stream *gsh; \
const char *demuxer_codecname; \
struct MPOpts *opts; \
struct demux_stream *ds; \
struct codecs *codec; \
unsigned int format; \
video, audio: use lavc decoders without codecs.conf entries Add support for using libavcodec decoders that do not have entries in codecs.conf. This is currently only used with demux_lavf, and the codec selection is based on codec_id returned by libavformat. Also modify codec-related terminal output somewhat to make it use information from libavcodec and avoid excessively long default output. The new any-lavc-codec support is implemented with codecs.conf entries that invoke vd_ffmpeg/ad_ffmpeg without directly specifying any libavcodec codec name. In this mode, the decoders now instead select the libavcodec codec based on codec_id previously set by demux_lavf (if any). These new "generic" codecs.conf entries specify "status buggy", so that they're tried after any specific entries with higher-priority status. Add new directive "anyinput" to codecs.conf syntax. This means the entry will always match regardless of fourcc. This is used for the above new codecs.conf entries (so the driver always gets to decide whether to accept the input, and will fail init() if it can't find a suitable codec in libavcodec). Remove parsing support for the obsolete codecs.conf directive "cpuflags". This directive has not had any effect and has not been used in default codecs.conf since many years ago. Shorten codec-related terminal output. When using libavcodec decoders, show the libavcodec long_name field rather than codecs.conf "info" field as the name of the codec. Stop showing the codecs.conf entry name and "vfm/afm" name by default, as these are rarely needed; they're now in verbose output only. Show "VIDEO:" line at VO initialization rather than at demuxer open. This didn't really belong in demuxer code; the new location may show more accurate values (known after decoder has been opened) and works right if video track is changed after initial demuxer open. The vd.c changes (primarily done for terminal output changes) remove round-to-even behavior from code setting dimensions based on aspect ratio. I hope nothing depended on this; at least the even values were not consistently guaranteed anyway, as the rounding code did not run if the video file did not specify a nonzero aspect value.
2012-07-24 06:01:47 +00:00
int libav_codec_id; \
int initialized; \
/* number of seconds stream should be delayed \
* (according to dwStart or similar) */ \
float stream_delay; \
/* things needed for parsing */ \
bool needs_parsing; \
struct AVCodecContext *avctx; \
struct AVCodecParserContext *parser; \
/* audio: last known pts value in output from decoder \
* video: predicted/interpolated PTS of the current frame */ \
double pts; \
/* decoder context */ \
void *context; \
video, audio: use lavc decoders without codecs.conf entries Add support for using libavcodec decoders that do not have entries in codecs.conf. This is currently only used with demux_lavf, and the codec selection is based on codec_id returned by libavformat. Also modify codec-related terminal output somewhat to make it use information from libavcodec and avoid excessively long default output. The new any-lavc-codec support is implemented with codecs.conf entries that invoke vd_ffmpeg/ad_ffmpeg without directly specifying any libavcodec codec name. In this mode, the decoders now instead select the libavcodec codec based on codec_id previously set by demux_lavf (if any). These new "generic" codecs.conf entries specify "status buggy", so that they're tried after any specific entries with higher-priority status. Add new directive "anyinput" to codecs.conf syntax. This means the entry will always match regardless of fourcc. This is used for the above new codecs.conf entries (so the driver always gets to decide whether to accept the input, and will fail init() if it can't find a suitable codec in libavcodec). Remove parsing support for the obsolete codecs.conf directive "cpuflags". This directive has not had any effect and has not been used in default codecs.conf since many years ago. Shorten codec-related terminal output. When using libavcodec decoders, show the libavcodec long_name field rather than codecs.conf "info" field as the name of the codec. Stop showing the codecs.conf entry name and "vfm/afm" name by default, as these are rarely needed; they're now in verbose output only. Show "VIDEO:" line at VO initialization rather than at demuxer open. This didn't really belong in demuxer code; the new location may show more accurate values (known after decoder has been opened) and works right if video track is changed after initial demuxer open. The vd.c changes (primarily done for terminal output changes) remove round-to-even behavior from code setting dimensions based on aspect ratio. I hope nothing depended on this; at least the even values were not consistently guaranteed anyway, as the rounding code did not run if the video file did not specify a nonzero aspect value.
2012-07-24 06:01:47 +00:00
const char *codecname; \
char *lang; /* track language */ \
typedef struct sh_common {
SH_COMMON
} sh_common_t;
typedef struct sh_audio {
SH_COMMON
int aid;
// 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
} sh_audio_t;
typedef struct sh_video {
SH_COMMON
int vid;
float timer; // absolute time in video stream, since last start/seek
// frame counters:
float num_frames; // number of frames played
int num_frames_decoded; // number of frames decoded
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;
unsigned int outfmtidx;
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
int sid;
char type; // t = text, v = VobSub, a = SSA/ASS, m, x, b, d, p
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);
void free_sh_audio(struct demuxer *demuxer, int id);
void free_sh_video(struct sh_video *sh);
const char *sh_sub_type2str(int 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 */