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mpv/mpvcore/player/video.c

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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.
*/
#include <stddef.h>
#include <stdbool.h>
#include <inttypes.h>
#include <math.h>
#include <assert.h>
#include "config.h"
#include "talloc.h"
#include "mpvcore/mp_msg.h"
#include "mpvcore/options.h"
#include "mpvcore/mp_common.h"
#include "mpvcore/encode.h"
#include "mpvcore/m_property.h"
#include "audio/out/ao.h"
#include "demux/demux.h"
#include "stream/stream.h"
#include "sub/sub.h"
#include "video/filter/vf.h"
#include "video/decode/dec_video.h"
#include "video/out/vo.h"
#include "mp_core.h"
#include "command.h"
void update_fps(struct MPContext *mpctx)
{
#ifdef CONFIG_ENCODING
struct sh_video *sh_video = mpctx->sh_video;
if (mpctx->encode_lavc_ctx && sh_video)
encode_lavc_set_video_fps(mpctx->encode_lavc_ctx, sh_video->fps);
#endif
}
static void recreate_video_filters(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
struct sh_video *sh_video = mpctx->sh_video;
assert(sh_video);
vf_uninit_filter_chain(sh_video->vfilter);
char *vf_arg[] = {
"_oldargs_", (char *)mpctx->video_out, NULL
};
sh_video->vfilter = vf_open_filter(opts, NULL, "vo", vf_arg);
sh_video->vfilter = append_filters(sh_video->vfilter, opts->vf_settings);
struct vf_instance *vf = sh_video->vfilter;
mpctx->osd->render_subs_in_filter
= vf->control(vf, VFCTRL_INIT_OSD, NULL) == VO_TRUE;
}
int reinit_video_filters(struct MPContext *mpctx)
{
struct sh_video *sh_video = mpctx->sh_video;
if (!sh_video)
return -2;
recreate_video_filters(mpctx);
video_reinit_vo(sh_video);
return sh_video->vf_initialized > 0 ? 0 : -1;
}
int reinit_video_chain(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
assert(!(mpctx->initialized_flags & INITIALIZED_VCODEC));
init_demux_stream(mpctx, STREAM_VIDEO);
sh_video_t *sh_video = mpctx->sh_video;
if (!sh_video)
goto no_video;
MP_VERBOSE(mpctx, "[V] fourcc:0x%X size:%dx%d fps:%5.3f\n",
mpctx->sh_video->format,
mpctx->sh_video->disp_w, mpctx->sh_video->disp_h,
mpctx->sh_video->fps);
if (opts->force_fps)
mpctx->sh_video->fps = opts->force_fps;
update_fps(mpctx);
if (!mpctx->sh_video->fps && !opts->force_fps && !opts->correct_pts) {
MP_ERR(mpctx, "FPS not specified in the "
"header or invalid, use the -fps option.\n");
}
double ar = -1.0;
//================== Init VIDEO (codec & libvo) ==========================
if (!opts->fixed_vo || !(mpctx->initialized_flags & INITIALIZED_VO)) {
mpctx->video_out = init_best_video_out(mpctx->global, mpctx->input,
mpctx->encode_lavc_ctx);
if (!mpctx->video_out) {
MP_FATAL(mpctx, "Error opening/initializing "
"the selected video_out (-vo) device.\n");
goto err_out;
}
mpctx->mouse_cursor_visible = true;
mpctx->initialized_flags |= INITIALIZED_VO;
}
// dynamic allocation only to make stheader.h lighter
talloc_free(sh_video->hwdec_info);
sh_video->hwdec_info = talloc_zero(sh_video, struct mp_hwdec_info);
vo_control(mpctx->video_out, VOCTRL_GET_HWDEC_INFO, sh_video->hwdec_info);
update_vo_window_title(mpctx);
if (stream_control(mpctx->sh_video->gsh->demuxer->stream,
STREAM_CTRL_GET_ASPECT_RATIO, &ar) != STREAM_UNSUPPORTED)
mpctx->sh_video->stream_aspect = ar;
recreate_video_filters(mpctx);
init_best_video_codec(sh_video, opts->video_decoders);
if (!sh_video->initialized)
goto err_out;
mpctx->initialized_flags |= INITIALIZED_VCODEC;
bool saver_state = opts->pause || !opts->stop_screensaver;
vo_control(mpctx->video_out, saver_state ? VOCTRL_RESTORE_SCREENSAVER
: VOCTRL_KILL_SCREENSAVER, NULL);
vo_control(mpctx->video_out, mpctx->paused ? VOCTRL_PAUSE
: VOCTRL_RESUME, NULL);
sh_video->last_pts = MP_NOPTS_VALUE;
sh_video->num_buffered_pts = 0;
sh_video->next_frame_time = 0;
mpctx->last_vf_reconfig_count = 0;
mpctx->restart_playback = true;
mpctx->sync_audio_to_video = !sh_video->gsh->attached_picture;
mpctx->delay = 0;
mpctx->vo_pts_history_seek_ts++;
vo_seek_reset(mpctx->video_out);
reset_subtitles(mpctx);
return 1;
err_out:
no_video:
uninit_player(mpctx, INITIALIZED_VCODEC | (opts->force_vo ? 0 : INITIALIZED_VO));
cleanup_demux_stream(mpctx, STREAM_VIDEO);
handle_force_window(mpctx, true);
MP_INFO(mpctx, "Video: no video\n");
return 0;
}
// Try to refresh the video by doing a precise seek to the currently displayed
// frame. This can go wrong in all sorts of ways, so use sparingly.
void mp_force_video_refresh(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
// If not paused, the next frame should come soon enough.
if (opts->pause && mpctx->last_vo_pts != MP_NOPTS_VALUE)
queue_seek(mpctx, MPSEEK_ABSOLUTE, mpctx->last_vo_pts, 1);
}
static bool filter_output_queued_frame(struct MPContext *mpctx)
{
struct sh_video *sh_video = mpctx->sh_video;
struct vo *video_out = mpctx->video_out;
struct mp_image *img = vf_chain_output_queued_frame(sh_video->vfilter);
if (img)
vo_queue_image(video_out, img);
talloc_free(img);
return !!img;
}
static bool load_next_vo_frame(struct MPContext *mpctx, bool eof)
{
if (vo_get_buffered_frame(mpctx->video_out, eof) >= 0)
return true;
if (filter_output_queued_frame(mpctx))
return true;
return false;
}
static void init_filter_params(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
struct sh_video *sh_video = mpctx->sh_video;
// Note that the video decoder already initializes the filter chain. This
// might recreate the chain a second time, which is not very elegant, but
// allows us to test whether enabling deinterlacing works with the current
// video format and other filters.
if (sh_video->vf_initialized != 1)
return;
if (sh_video->vf_reconfig_count <= mpctx->last_vf_reconfig_count) {
if (opts->deinterlace >= 0) {
mp_property_do("deinterlace", M_PROPERTY_SET, &opts->deinterlace,
mpctx);
}
}
// Setting filter params has to be "stable" (no change if params already
// set) - checking the reconfig count is just an optimization.
mpctx->last_vf_reconfig_count = sh_video->vf_reconfig_count;
}
static void filter_video(struct MPContext *mpctx, struct mp_image *frame)
{
struct sh_video *sh_video = mpctx->sh_video;
init_filter_params(mpctx);
frame->pts = sh_video->pts;
mp_image_set_params(frame, sh_video->vf_input);
vf_filter_frame(sh_video->vfilter, frame);
filter_output_queued_frame(mpctx);
}
static int check_framedrop(struct MPContext *mpctx, double frame_time)
{
struct MPOpts *opts = mpctx->opts;
// check for frame-drop:
if (mpctx->sh_audio && !mpctx->ao->untimed &&
!demux_stream_eof(mpctx->sh_audio->gsh))
{
float delay = opts->playback_speed * ao_get_delay(mpctx->ao);
float d = delay - mpctx->delay;
if (frame_time < 0)
frame_time = mpctx->sh_video->fps > 0 ? 1.0 / mpctx->sh_video->fps : 0;
// we should avoid dropping too many frames in sequence unless we
// are too late. and we allow 100ms A-V delay here:
if (d < -mpctx->dropped_frames * frame_time - 0.100 && !mpctx->paused
&& !mpctx->restart_playback) {
mpctx->drop_frame_cnt++;
mpctx->dropped_frames++;
return mpctx->opts->frame_dropping;
} else
mpctx->dropped_frames = 0;
}
return 0;
}
static struct demux_packet *video_read_frame(struct MPContext *mpctx)
{
sh_video_t *sh_video = mpctx->sh_video;
demuxer_t *demuxer = sh_video->gsh->demuxer;
float pts1 = sh_video->last_pts;
struct demux_packet *pkt = demux_read_packet(sh_video->gsh);
if (!pkt)
return NULL; // EOF
if (pkt->pts != MP_NOPTS_VALUE)
sh_video->last_pts = pkt->pts;
float frame_time = sh_video->fps > 0 ? 1.0f / sh_video->fps : 0;
// override frame_time for variable/unknown FPS formats:
if (!mpctx->opts->force_fps) {
double next_pts = demux_get_next_pts(sh_video->gsh);
double d = next_pts == MP_NOPTS_VALUE ? sh_video->last_pts - pts1
: next_pts - sh_video->last_pts;
if (d >= 0) {
if (demuxer->type == DEMUXER_TYPE_TV) {
if (d > 0)
sh_video->fps = 1.0f / d;
frame_time = d;
} else {
if ((int)sh_video->fps <= 1)
frame_time = d;
}
}
}
sh_video->pts = sh_video->last_pts;
sh_video->next_frame_time = frame_time;
return pkt;
}
static double update_video_nocorrect_pts(struct MPContext *mpctx)
{
struct sh_video *sh_video = mpctx->sh_video;
double frame_time = 0;
while (1) {
// In nocorrect-pts mode there is no way to properly time these frames
if (load_next_vo_frame(mpctx, false))
break;
frame_time = sh_video->next_frame_time;
if (mpctx->restart_playback)
frame_time = 0;
struct demux_packet *pkt = video_read_frame(mpctx);
if (!pkt)
return -1;
if (mpctx->sh_audio)
mpctx->delay -= frame_time;
// video_read_frame can change fps (e.g. for ASF video)
update_fps(mpctx);
int framedrop_type = check_framedrop(mpctx, frame_time);
void *decoded_frame = decode_video(sh_video, pkt, framedrop_type,
sh_video->pts);
talloc_free(pkt);
if (decoded_frame) {
filter_video(mpctx, decoded_frame);
}
break;
}
return frame_time;
}
static double update_video_attached_pic(struct MPContext *mpctx)
{
struct sh_video *sh_video = mpctx->sh_video;
// Try to decode the picture multiple times, until it is displayed.
if (mpctx->video_out->hasframe)
return -1;
struct mp_image *decoded_frame =
decode_video(sh_video, sh_video->gsh->attached_picture, 0, 0);
if (decoded_frame)
filter_video(mpctx, decoded_frame);
load_next_vo_frame(mpctx, true);
mpctx->sh_video->pts = MP_NOPTS_VALUE;
return 0;
}
static void determine_frame_pts(struct MPContext *mpctx)
{
struct sh_video *sh_video = mpctx->sh_video;
struct MPOpts *opts = mpctx->opts;
if (opts->user_pts_assoc_mode)
sh_video->pts_assoc_mode = opts->user_pts_assoc_mode;
else if (sh_video->pts_assoc_mode == 0) {
if (mpctx->sh_video->gsh->demuxer->timestamp_type == TIMESTAMP_TYPE_PTS
&& sh_video->codec_reordered_pts != MP_NOPTS_VALUE)
sh_video->pts_assoc_mode = 1;
else
sh_video->pts_assoc_mode = 2;
} else {
int probcount1 = sh_video->num_reordered_pts_problems;
int probcount2 = sh_video->num_sorted_pts_problems;
if (sh_video->pts_assoc_mode == 2) {
int tmp = probcount1;
probcount1 = probcount2;
probcount2 = tmp;
}
if (probcount1 >= probcount2 * 1.5 + 2) {
sh_video->pts_assoc_mode = 3 - sh_video->pts_assoc_mode;
MP_VERBOSE(mpctx, "Switching to pts association mode "
"%d.\n", sh_video->pts_assoc_mode);
}
}
sh_video->pts = sh_video->pts_assoc_mode == 1 ?
sh_video->codec_reordered_pts : sh_video->sorted_pts;
}
double update_video(struct MPContext *mpctx, double endpts)
{
struct sh_video *sh_video = mpctx->sh_video;
struct vo *video_out = mpctx->video_out;
sh_video->vfilter->control(sh_video->vfilter, VFCTRL_SET_OSD_OBJ,
mpctx->osd); // for vf_sub
if (!mpctx->opts->correct_pts)
return update_video_nocorrect_pts(mpctx);
if (sh_video->gsh->attached_picture)
return update_video_attached_pic(mpctx);
double pts;
while (1) {
if (load_next_vo_frame(mpctx, false))
break;
pts = MP_NOPTS_VALUE;
struct demux_packet *pkt = NULL;
while (1) {
pkt = demux_read_packet(mpctx->sh_video->gsh);
if (!pkt || pkt->len)
break;
/* Packets with size 0 are assumed to not correspond to frames,
* but to indicate the absence of a frame in formats like AVI
* that must have packets at fixed timecode intervals. */
talloc_free(pkt);
}
if (pkt)
pts = pkt->pts;
if (pts != MP_NOPTS_VALUE)
pts += mpctx->video_offset;
if (pts >= mpctx->hrseek_pts - .005)
mpctx->hrseek_framedrop = false;
int framedrop_type = mpctx->hrseek_active && mpctx->hrseek_framedrop ?
1 : check_framedrop(mpctx, -1);
struct mp_image *decoded_frame =
decode_video(sh_video, pkt, framedrop_type, pts);
talloc_free(pkt);
if (decoded_frame) {
determine_frame_pts(mpctx);
filter_video(mpctx, decoded_frame);
} else if (!pkt) {
if (!load_next_vo_frame(mpctx, true))
return -1;
}
break;
}
if (!video_out->frame_loaded)
return 0;
pts = video_out->next_pts;
if (pts == MP_NOPTS_VALUE) {
MP_ERR(mpctx, "Video pts after filters MISSING\n");
// Try to use decoder pts from before filters
pts = sh_video->pts;
if (pts == MP_NOPTS_VALUE)
pts = sh_video->last_pts;
}
if (endpts == MP_NOPTS_VALUE || pts < endpts)
add_frame_pts(mpctx, pts);
if (mpctx->hrseek_active && pts < mpctx->hrseek_pts - .005) {
vo_skip_frame(video_out);
return 0;
}
mpctx->hrseek_active = false;
sh_video->pts = pts;
if (sh_video->last_pts == MP_NOPTS_VALUE)
sh_video->last_pts = sh_video->pts;
else if (sh_video->last_pts > sh_video->pts) {
MP_WARN(mpctx, "Decreasing video pts: %f < %f\n",
sh_video->pts, sh_video->last_pts);
/* If the difference in pts is small treat it as jitter around the
* right value (possibly caused by incorrect timestamp ordering) and
* just show this frame immediately after the last one.
* Treat bigger differences as timestamp resets and start counting
* timing of later frames from the position of this one. */
if (sh_video->last_pts - sh_video->pts > 0.5)
sh_video->last_pts = sh_video->pts;
else
sh_video->pts = sh_video->last_pts;
} else if (sh_video->pts >= sh_video->last_pts + 60) {
// Assume a PTS difference >= 60 seconds is a discontinuity.
MP_WARN(mpctx, "Jump in video pts: %f -> %f\n",
sh_video->last_pts, sh_video->pts);
sh_video->last_pts = sh_video->pts;
}
double frame_time = sh_video->pts - sh_video->last_pts;
sh_video->last_pts = sh_video->pts;
if (mpctx->sh_audio)
mpctx->delay -= frame_time;
return frame_time;
}
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