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mpv/demux/stheader.h
wm4 6cec60a454 core: add --deinterlace option, restore it with resume functionality
The --deinterlace option does on playback start what the "deinterlace"
property normally does at runtime. You could do this before by using the
--vf option or by messing with the vo_vdpau default options, but this
new option is supposed to be a "foolproof" way.

The main motivation for adding this is so that the deinterlace property
can be restored when using the video resume functionality
(quit_watch_later command).

Implementation-wise, this is a bit messy. The video chain is rebuilt in
mpcodecs_reconfig_vo(), where we don't have access to MPContext, so the
usual mechanism for enabling deinterlacing can't be used. Further,
mpcodecs_reconfig_vo() is called by the video decoder, which doesn't
have access to MPContext either. Moving this call to mplayer.c isn't
currently possible either (see below). So we just do this before frames
are filtered, which potentially means setting the deinterlacing every
frame. Fortunately, setting deinterlacing is stable and idempotent, so
this is hopefully not a problem. We also add a counter that is
incremented on each reconfig to reduce the amount of additional work per
frame to nearly zero.

The reason we can't move mpcodecs_reconfig_vo() to mplayer.c is because
of hardware decoding: we need to check whether the video chain works
before we decide that we can use hardware decoding. Changing it so that
this can be decided in advance without building a filter chain sounds
like a good idea and should be done, but we aren't there yet.
2013-09-13 21:32:28 +02:00

152 lines
5.3 KiB
C

/*
* 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 "audio/chmap.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;
// 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
// stream is a picture (such as album art)
struct demux_packet *attached_picture;
// Human readable description of the running decoder, or NULL
char *decoder_desc;
// shouldn't exist type of stuff
struct MPOpts *opts;
// Internal to demux.c
struct demux_stream *ds;
};
#define SH_COMMON \
struct sh_stream *gsh; \
struct MPOpts *opts; \
/* usually a FourCC, exact meaning depends on gsh->format */ \
unsigned int format; \
int initialized; \
/* 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 samplesize;
struct mp_chmap channels;
int i_bps; // == bitrate (compressed bytes/sec)
// 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:
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
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 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 or decoder)
// output driver/filters: (set by libmpcodecs core)
struct vf_instance *vfilter; // video filter chain
const struct vd_functions *vd_driver;
int vf_initialized; // -1 failed, 0 not done, 1 done
long vf_reconfig_count; // incremented each mpcodecs_reconfig_vo() call
struct mp_image_params *vf_input; // video filter input params
struct mp_hwdec_info *hwdec_info; // video output hwdec handles
// win32-compatible codec parameters:
BITMAPINFOHEADER *bih;
} sh_video_t;
typedef struct sh_sub {
SH_COMMON
unsigned char *extradata; // extra header data passed from demuxer
int extradata_len;
int frame_based; // timestamps are frame-based
bool is_utf8; // if false, subtitle packet charset is unknown
struct ass_track *track; // loaded by libass
struct dec_sub *dec_sub; // decoder context
} sh_sub_t;
#endif /* MPLAYER_STHEADER_H */