mpv/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 "common/msg.h"
#include "options/options.h"
#include "common/common.h"
#include "common/encode.h"
#include "options/m_property.h"
#include "audio/out/ao.h"
#include "demux/demux.h"
#include "stream/stream.h"
#include "sub/osd.h"
#include "video/hwdec.h"
#include "video/filter/vf.h"
#include "video/decode/dec_video.h"
#include "video/decode/vd.h"
#include "video/out/vo.h"
#include "core.h"
#include "command.h"
void update_fps(struct MPContext *mpctx)
{
#if HAVE_ENCODING
struct dec_video *d_video = mpctx->d_video;
if (mpctx->encode_lavc_ctx && d_video)
encode_lavc_set_video_fps(mpctx->encode_lavc_ctx, d_video->fps);
#endif
}
static void set_allowed_vo_formats(struct vf_chain *c, struct vo *vo)
{
for (int fmt = IMGFMT_START; fmt < IMGFMT_END; fmt++) {
c->allowed_output_formats[fmt - IMGFMT_START] =
vo->driver->query_format(vo, fmt);
}
}
static void reconfig_video(struct MPContext *mpctx,
const struct mp_image_params *params,
bool probe_only)
{
struct MPOpts *opts = mpctx->opts;
struct dec_video *d_video = mpctx->d_video;
d_video->decoder_output = *params;
set_allowed_vo_formats(d_video->vfilter, mpctx->video_out);
// The event should happen _after_ filter and VO reconfig. Since we don't
// have any fine grained locking, this is just as good.
mp_notify(mpctx, MPV_EVENT_VIDEO_RECONFIG, NULL);
if (video_reconfig_filters(d_video, params) < 0) {
// Most video filters don't work with hardware decoding, so this
// might be the reason filter reconfig failed.
if (!probe_only &&
video_vd_control(d_video, VDCTRL_FORCE_HWDEC_FALLBACK, NULL) == CONTROL_OK)
{
// Fallback active; decoder will return software format next
// time. Don't abort video decoding.
d_video->vfilter->initialized = 0;
}
return;
}
if (d_video->vfilter->initialized < 1)
return;
struct mp_image_params p = d_video->vfilter->output_params;
const struct vo_driver *info = mpctx->video_out->driver;
MP_INFO(mpctx, "VO: [%s] %dx%d => %dx%d %s\n",
info->name, p.w, p.h, p.d_w, p.d_h, vo_format_name(p.imgfmt));
MP_VERBOSE(mpctx, "VO: Description: %s\n", info->description);
int r = vo_reconfig(mpctx->video_out, &p, 0);
if (r < 0)
d_video->vfilter->initialized = -1;
if (r >= 0) {
if (opts->gamma_gamma != 1000)
video_set_colors(d_video, "gamma", opts->gamma_gamma);
if (opts->gamma_brightness != 1000)
video_set_colors(d_video, "brightness", opts->gamma_brightness);
if (opts->gamma_contrast != 1000)
video_set_colors(d_video, "contrast", opts->gamma_contrast);
if (opts->gamma_saturation != 1000)
video_set_colors(d_video, "saturation", opts->gamma_saturation);
if (opts->gamma_hue != 1000)
video_set_colors(d_video, "hue", opts->gamma_hue);
}
}
static void recreate_video_filters(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
struct dec_video *d_video = mpctx->d_video;
assert(d_video);
vf_destroy(d_video->vfilter);
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d_video->vfilter = vf_new(mpctx->global);
d_video->vfilter->hwdec = &d_video->hwdec_info;
vf_append_filter_list(d_video->vfilter, opts->vf_settings);
// for vf_sub
vf_control_any(d_video->vfilter, VFCTRL_SET_OSD_OBJ, mpctx->osd);
osd_set_render_subs_in_filter(mpctx->osd,
vf_control_any(d_video->vfilter, VFCTRL_INIT_OSD, NULL) == CONTROL_OK);
set_allowed_vo_formats(d_video->vfilter, mpctx->video_out);
}
int reinit_video_filters(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
if (!d_video || !d_video->decoder_output.imgfmt)
return -2;
recreate_video_filters(mpctx);
reconfig_video(mpctx, &d_video->decoder_output, true);
return d_video->vfilter && d_video->vfilter->initialized > 0 ? 0 : -1;
}
int reinit_video_chain(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
assert(!(mpctx->initialized_flags & INITIALIZED_VCODEC));
assert(!mpctx->d_video);
struct track *track = mpctx->current_track[0][STREAM_VIDEO];
struct sh_stream *sh = init_demux_stream(mpctx, track);
if (!sh)
goto no_video;
MP_VERBOSE(mpctx, "[V] fourcc:0x%X size:%dx%d fps:%5.3f\n",
sh->format,
sh->video->disp_w, sh->video->disp_h,
sh->video->fps);
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;
}
update_window_title(mpctx, true);
struct dec_video *d_video = talloc_zero(NULL, struct dec_video);
mpctx->d_video = d_video;
d_video->global = mpctx->global;
d_video->log = mp_log_new(d_video, mpctx->log, "!vd");
d_video->opts = mpctx->opts;
d_video->header = sh;
d_video->fps = sh->video->fps;
d_video->vo = mpctx->video_out;
mpctx->initialized_flags |= INITIALIZED_VCODEC;
vo_control(mpctx->video_out, VOCTRL_GET_HWDEC_INFO, &d_video->hwdec_info);
if (stream_control(sh->demuxer->stream, STREAM_CTRL_GET_ASPECT_RATIO, &ar)
!= STREAM_UNSUPPORTED)
d_video->stream_aspect = ar;
recreate_video_filters(mpctx);
if (!video_init_best_codec(d_video, opts->video_decoders))
goto err_out;
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);
mpctx->restart_playback = true;
mpctx->sync_audio_to_video = !sh->attached_picture;
mpctx->delay = 0;
mpctx->video_next_pts = MP_NOPTS_VALUE;
mpctx->playing_last_frame = false;
mpctx->last_frame_duration = 0;
mpctx->vo_pts_history_seek_ts++;
vo_seek_reset(mpctx->video_out);
reset_subtitles(mpctx, 0);
reset_subtitles(mpctx, 1);
if (opts->force_fps) {
d_video->fps = opts->force_fps;
MP_INFO(mpctx, "FPS forced to be %5.3f.\n", d_video->fps);
}
if (!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");
}
update_fps(mpctx);
return 1;
err_out:
no_video:
uninit_player(mpctx, INITIALIZED_VCODEC | (opts->force_vo ? 0 : INITIALIZED_VO));
mp_deselect_track(mpctx, track);
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)
player: handle seek delays differently The code removed from handle_input_and_seek_coalesce() did two things: 1. If there's a queued seek, stop accepting non-seek commands, and delay them to the next playloop iteration. 2. If a seek is executing (i.e. the seek was unqueued, and now it's trying to decode and display the first video frame), stop accepting seek commands (and in fact all commands that were queued after the first seek command). This logic is disabled if seeking started longer than 300ms ago. (To avoid starvation.) I'm not sure why 1. would be needed. It's still possible that a command immediately executed after a seek command sees a "seeking in progress" state, because it affects queued seeks only, and not seeks in progress. Drop this code, since it can easily lead to input starvation, and I'm not aware of any disadvantages. The logic in 2. is good to make seeking behave much better, as it guarantees that the video display is updated frequently. Keep the core idea, but implement it differently. Now this logic is applied to seeks only. Commands after the seek can execute freely, and like with 1., I don't see a reason why they couldn't. However, in some cases, seeks are supposed to be executed instantly, so queue_seek() needs an additional parameter to signal the need for immediate update. One nice thing is that commands like sub_seek automatically profit from the seek delay logic. On the other hand, hitting chapter seek multiple times still does not update the video on chapter boundaries (as it should be). Note that the main goal of this commit is actually simplification of the input processing logic and to allow all commands to be executed immediately.
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queue_seek(mpctx, MPSEEK_ABSOLUTE, mpctx->last_vo_pts, 1, true);
}
static bool filter_output_queued_frame(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
struct vo *video_out = mpctx->video_out;
struct mp_image *img = vf_output_queued_frame(d_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;
}
// Called after video reinit. This can be generally used to try to insert more
// filters using the filter chain edit functionality in command.c.
static void init_filter_params(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
// Note that the filter chain is already initialized. This code 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 (opts->deinterlace >= 0)
mp_property_do("deinterlace", M_PROPERTY_SET, &opts->deinterlace, mpctx);
}
static void filter_video(struct MPContext *mpctx, struct mp_image *frame,
bool reconfig_ok)
{
struct dec_video *d_video = mpctx->d_video;
struct mp_image_params params;
mp_image_params_from_image(&params, frame);
if (!mp_image_params_equals(&d_video->decoder_output, &params) ||
d_video->vfilter->initialized < 1)
{
// In case we want to wait until filter chain is drained
if (!reconfig_ok) {
talloc_free(d_video->waiting_decoded_mpi);
d_video->waiting_decoded_mpi = frame;
return;
}
reconfig_video(mpctx, &params, false);
if (d_video->vfilter->initialized > 0)
init_filter_params(mpctx);
}
if (d_video->vfilter->initialized < 1) {
talloc_free(frame);
return;
}
mp_image_set_params(frame, &d_video->vf_input); // force csp/aspect overrides
vf_filter_frame(d_video->vfilter, frame);
filter_output_queued_frame(mpctx);
}
// Reconfigure the video chain and the VO on a format change. This is separate,
// because we wait with the reconfig until the currently buffered video has
// finished displaying. Otherwise, we'd resize the window and then wait for the
// video finishing, which would result in a black window for that frame.
// Does nothing if there was no pending change.
void video_execute_format_change(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
struct mp_image *decoded_frame = d_video->waiting_decoded_mpi;
d_video->waiting_decoded_mpi = NULL;
if (decoded_frame)
filter_video(mpctx, decoded_frame, true);
}
static int check_framedrop(struct MPContext *mpctx, double frame_time)
{
struct MPOpts *opts = mpctx->opts;
struct track *t_audio = mpctx->current_track[0][STREAM_AUDIO];
struct sh_stream *sh_audio = t_audio ? t_audio->stream : NULL;
// check for frame-drop:
if (mpctx->d_audio && !mpctx->ao->untimed && sh_audio &&
!demux_stream_eof(sh_audio))
{
float delay = opts->playback_speed * ao_get_delay(mpctx->ao);
float d = delay - mpctx->delay;
float fps = mpctx->d_video->fps;
if (frame_time < 0)
frame_time = fps > 0 ? 1.0 / 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 double update_video_attached_pic(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
// Try to decode the picture multiple times, until it is displayed.
if (mpctx->video_out->hasframe)
return -1;
struct mp_image *decoded_frame =
video_decode(d_video, d_video->header->attached_picture, 0);
if (decoded_frame)
filter_video(mpctx, decoded_frame, true);
load_next_vo_frame(mpctx, true);
mpctx->video_next_pts = MP_NOPTS_VALUE;
return 0;
}
double update_video(struct MPContext *mpctx, double endpts)
{
struct dec_video *d_video = mpctx->d_video;
struct vo *video_out = mpctx->video_out;
if (d_video->header->attached_picture)
return update_video_attached_pic(mpctx);
if (load_next_vo_frame(mpctx, false)) {
// Use currently queued VO frame
} else if (d_video->waiting_decoded_mpi) {
// Draining on reconfig
if (!load_next_vo_frame(mpctx, true))
return -1;
} else {
// Decode a new frame
struct demux_packet *pkt = demux_read_packet(d_video->header);
if (pkt && pkt->pts != MP_NOPTS_VALUE)
pkt->pts += mpctx->video_offset;
if ((pkt && pkt->pts >= mpctx->hrseek_pts - .005) ||
d_video->has_broken_packet_pts)
{
mpctx->hrseek_framedrop = false;
}
int framedrop_type = mpctx->hrseek_active && mpctx->hrseek_framedrop ?
1 : check_framedrop(mpctx, -1);
struct mp_image *decoded_frame =
video_decode(d_video, pkt, framedrop_type);
talloc_free(pkt);
if (decoded_frame) {
filter_video(mpctx, decoded_frame, false);
} else if (!pkt) {
if (!load_next_vo_frame(mpctx, true))
return -1;
}
}
// Whether the VO has an image queued.
// If it does, it will be used to time and display the next frame.
if (!video_out->frame_loaded)
return 0;
double pts = video_out->next_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;
double last_pts = mpctx->video_next_pts;
if (last_pts == MP_NOPTS_VALUE)
last_pts = pts;
double frame_time = pts - last_pts;
if (frame_time < 0 || frame_time >= 60) {
// Assume a PTS difference >= 60 seconds is a discontinuity.
MP_WARN(mpctx, "Jump in video pts: %f -> %f\n", last_pts, pts);
frame_time = 0;
}
mpctx->video_next_pts = pts;
if (mpctx->d_audio)
mpctx->delay -= frame_time;
return frame_time;
}