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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 "options/m_config.h"
#include "options/m_option.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 int try_filter(struct MPContext *mpctx, struct mp_image_params params,
char *name, char *label, char **args)
{
struct dec_video *d_video = mpctx->d_video;
struct vf_instance *vf = vf_append_filter(d_video->vfilter, name, args);
if (!vf)
return -1;
vf->label = talloc_strdup(vf, label);
if (video_reconfig_filters(d_video, &params) < 0) {
vf_remove_filter(d_video->vfilter, vf);
// restore
video_reconfig_filters(d_video, &params);
return -1;
}
return 0;
}
// Reconfigure the filter chain according to decoder output.
// probe_only: don't force fallback to software when doing hw decoding, and
// the filter chain couldn't be configured
static void filter_reconfig(struct MPContext *mpctx,
bool probe_only)
{
struct dec_video *d_video = mpctx->d_video;
struct mp_image_params params = d_video->decoder_output;
set_allowed_vo_formats(d_video->vfilter, mpctx->video_out);
if (video_reconfig_filters(d_video, &params) < 0) {
// Most video filters don't work with hardware decoding, so this
// might be the reason why 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;
mp_image_unrefp(&d_video->waiting_decoded_mpi);
d_video->decoder_output = (struct mp_image_params){0};
MP_VERBOSE(mpctx, "hwdec falback due to filters.\n");
}
return;
}
if (d_video->vfilter->initialized < 1)
return;
if (params.rotate && (params.rotate % 90 == 0)) {
if (!(mpctx->video_out->driver->caps & VO_CAP_ROTATE90)) {
// Try to insert a rotation filter.
char deg[10];
snprintf(deg, sizeof(deg), "%d", params.rotate);
char *args[] = {"angle", deg, NULL, NULL};
if (try_filter(mpctx, params, "rotate", "autorotate", args) >= 0) {
params.rotate = 0;
} else {
MP_ERR(mpctx, "Can't insert rotation filter.\n");
}
}
}
}
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);
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)
return 0;
bool need_reconfig = d_video->vfilter->initialized != 0;
recreate_video_filters(mpctx);
if (need_reconfig)
filter_reconfig(mpctx, true);
if (!d_video->vfilter)
return 0;
return d_video->vfilter->initialized;
}
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->osd,
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;
struct dec_video *d_video = mpctx->d_video;
if (!d_video || !d_video->decoder_output.imgfmt)
return;
// 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, 2, 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 && !ao_untimed(mpctx->ao) && 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;
}
// Read a packet, store decoded image into d_video->waiting_decoded_mpi
// Return 0 if EOF was reached (though the decoder still can have frames buffered)
static int decode_image(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
if (d_video->header->attached_picture) {
d_video->waiting_decoded_mpi =
video_decode(d_video, d_video->header->attached_picture, 0);
return 0;
}
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->opts->hr_seek_framedrop)
{
mpctx->hrseek_framedrop = false;
}
int framedrop_type = mpctx->hrseek_active && mpctx->hrseek_framedrop ?
1 : check_framedrop(mpctx, -1);
d_video->waiting_decoded_mpi =
video_decode(d_video, pkt, framedrop_type);
bool had_packet = !!pkt;
talloc_free(pkt);
return had_packet;
}
// 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);
}
// Make sure at least 1 filtered image is available.
// Returns: -1: error, 0: EOF, 1: ok or progress was made
// A return value of 1 doesn't necessarily output a frame, but makes the promise
// that calling this function again will eventually do something.
static int video_decode_and_filter(struct MPContext *mpctx)
{
struct dec_video *d_video = mpctx->d_video;
struct vf_chain *vf = d_video->vfilter;
if (vf->initialized < 0)
return -1;
// There is already a filtered frame available.
if (vf_output_frame(vf, false) > 0)
return 1;
// Decoder output is different from filter input?
bool need_vf_reconfig = !vf->input_params.imgfmt || vf->initialized < 1 ||
!mp_image_params_equal(&d_video->decoder_output, &vf->input_params);
// (If imgfmt==0, nothing was decoded yet, and the format is unknown.)
if (need_vf_reconfig && d_video->decoder_output.imgfmt) {
// Drain the filter chain.
if (vf_output_frame(vf, true) > 0)
return 1;
// The filter chain is drained; execute the filter format change.
filter_reconfig(mpctx, false);
if (vf->initialized == 0)
return 1; // hw decoding fallback; try again
if (vf->initialized < 1)
return -1;
init_filter_params(mpctx);
return 1;
}
// If something was decoded, and the filter chain is ready, filter it.
if (!need_vf_reconfig && d_video->waiting_decoded_mpi) {
vf_filter_frame(vf, d_video->waiting_decoded_mpi);
d_video->waiting_decoded_mpi = NULL;
return 1;
}
if (!d_video->waiting_decoded_mpi) {
// Decode a new image, or at least feed the decoder a packet.
int r = decode_image(mpctx);
if (d_video->waiting_decoded_mpi)
d_video->decoder_output = d_video->waiting_decoded_mpi->params;
if (!d_video->waiting_decoded_mpi && r < 1)
return 0; // true EOF
}
// Image will be filtered on the next iteration.
return 1;
}
static void init_vo(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
struct dec_video *d_video = mpctx->d_video;
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);
mp_notify(mpctx, MPV_EVENT_VIDEO_RECONFIG, NULL);
}
// Fill the VO buffer with a newly filtered or decoded image.
// Returns: -1: error, 0: EOF, 1: ok or progress was made
static int video_output_image(struct MPContext *mpctx, double endpts,
bool reconfig_ok)
{
struct vf_chain *vf = mpctx->d_video->vfilter;
struct vo *vo = mpctx->video_out;
// Already enough video buffered in VO?
// (This implies vo_has_next_frame(vo, false/true) returns true.)
if (!vo_needs_new_image(vo) && vo->params)
return 1;
// Filter a new frame.
int r = video_decode_and_filter(mpctx);
if (r < 0)
return r; // error
vf_output_frame(vf, false);
if (vf->output) {
double pts = vf->output->pts;
// Always add these; they make backstepping after seeking faster.
add_frame_pts(mpctx, pts);
bool drop = false;
if (mpctx->hrseek_active && pts < mpctx->hrseek_pts - .005)
drop = true;
if (endpts != MP_NOPTS_VALUE && pts >= endpts) {
drop = true;
r = 0; // EOF
}
if (drop) {
talloc_free(vf->output);
vf->output = NULL;
return r;
}
}
// Filter output is different from VO input?
bool need_vo_reconfig = !vo->params ||
!mp_image_params_equal(&vf->output_params, vo->params);
if (need_vo_reconfig) {
// Draining VO buffers.
if (vo_has_next_frame(vo, true))
return 0; // EOF so that caller displays remaining VO frames
// There was no decoded image yet - must not signal fake EOF.
// Likewise, if there's no filtered frame yet, don't reconfig yet.
if (!vf->output_params.imgfmt || !vf->output)
return r;
// Force draining.
if (!reconfig_ok)
return 0;
struct mp_image_params p = vf->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 vo_r = vo_reconfig(vo, &p, 0);
if (vo_r < 0) {
vf->initialized = -1;
return -1;
}
init_vo(mpctx);
// Display the frame queued after this immediately.
// (Neutralizes frame time calculation in update_video.)
mpctx->video_next_pts = MP_NOPTS_VALUE;
}
// Queue new frame, if there's one.
struct mp_image *img = vf_read_output_frame(vf);
if (img) {
vo_queue_image(vo, img);
return 1;
}
return r; // includes the true EOF case
}
// returns: <0 on error, 0: eof, 1: progress, but no output, 2: new frame
int update_video(struct MPContext *mpctx, double endpts, bool reconfig_ok,
double *frame_duration)
{
struct vo *video_out = mpctx->video_out;
if (mpctx->d_video->header->attached_picture) {
if (video_out->hasframe)
return 0;
if (vo_has_next_frame(video_out, true))
return 2;
}
int r = video_output_image(mpctx, endpts, reconfig_ok);
if (r < 0)
return r;
// On EOF (r==0), we always drain the VO; otherwise we must ensure that
// the VO will have enough frames buffered (matters especially for VO based
// frame dropping).
if (!vo_has_next_frame(video_out, !r))
return !!r;
if (mpctx->d_video->header->attached_picture) {
mpctx->video_next_pts = MP_NOPTS_VALUE;
return 2;
}
double pts = vo_get_next_pts(video_out, 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;
*frame_duration = frame_time;
return 2;
}
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