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mpv/video/decode/dec_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 "config.h"
#include "mpvcore/options.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "mpvcore/mp_msg.h"
#include "osdep/timer.h"
#include "stream/stream.h"
#include "demux/demux_packet.h"
#include "mpvcore/codecs.h"
#include "video/out/vo.h"
#include "video/csputils.h"
#include "demux/stheader.h"
#include "video/decode/vd.h"
#include "video/filter/vf.h"
#include "video/decode/dec_video.h"
int vd_control(struct sh_video *sh_video, int cmd, void *arg)
{
const struct vd_functions *vd = sh_video->vd_driver;
if (vd)
return vd->control(sh_video, cmd, arg);
return CONTROL_UNKNOWN;
}
int get_video_quality_max(sh_video_t *sh_video)
{
vf_instance_t *vf = sh_video->vfilter;
if (vf) {
int ret = vf_control(vf, VFCTRL_QUERY_MAX_PP_LEVEL, NULL);
if (ret > 0) {
mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[PP] Using external postprocessing filter, max q = %d.\n", ret);
return ret;
}
}
return 0;
}
int set_video_colors(sh_video_t *sh_video, const char *item, int value)
{
vf_instance_t *vf = sh_video->vfilter;
vf_equalizer_t data;
data.item = item;
data.value = value;
mp_dbg(MSGT_DECVIDEO, MSGL_V, "set video colors %s=%d \n", item, value);
if (vf) {
int ret = vf_control(vf, VFCTRL_SET_EQUALIZER, &data);
if (ret == CONTROL_TRUE)
return 1;
}
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Video attribute '%s' is not supported by selected vo.\n",
item);
return 0;
}
int get_video_colors(sh_video_t *sh_video, const char *item, int *value)
{
vf_instance_t *vf = sh_video->vfilter;
vf_equalizer_t data;
data.item = item;
mp_dbg(MSGT_DECVIDEO, MSGL_V, "get video colors %s \n", item);
if (vf) {
int ret = vf_control(vf, VFCTRL_GET_EQUALIZER, &data);
if (ret == CONTROL_TRUE) {
*value = data.value;
return 1;
}
}
return 0;
}
void resync_video_stream(sh_video_t *sh_video)
{
vd_control(sh_video, VDCTRL_RESYNC_STREAM, NULL);
sh_video->prev_codec_reordered_pts = MP_NOPTS_VALUE;
sh_video->prev_sorted_pts = MP_NOPTS_VALUE;
}
void video_reinit_vo(struct sh_video *sh_video)
{
vd_control(sh_video, VDCTRL_REINIT_VO, NULL);
}
int get_current_video_decoder_lag(sh_video_t *sh_video)
{
int ret = -1;
vd_control(sh_video, VDCTRL_QUERY_UNSEEN_FRAMES, &ret);
return ret;
}
void uninit_video(sh_video_t *sh_video)
{
if (!sh_video->initialized)
return;
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Uninit video.\n");
sh_video->vd_driver->uninit(sh_video);
vf_uninit_filter_chain(sh_video->vfilter);
sh_video->vfilter = NULL;
talloc_free(sh_video->gsh->decoder_desc);
sh_video->gsh->decoder_desc = NULL;
sh_video->initialized = 0;
}
static int init_video_codec(sh_video_t *sh_video, const char *decoder)
{
assert(!sh_video->initialized);
if (!sh_video->vd_driver->init(sh_video, decoder)) {
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Video decoder init failed.\n");
//uninit_video(sh_video);
return 0;
}
sh_video->initialized = 1;
sh_video->prev_codec_reordered_pts = MP_NOPTS_VALUE;
sh_video->prev_sorted_pts = MP_NOPTS_VALUE;
return 1;
}
struct mp_decoder_list *mp_video_decoder_list(void)
{
struct mp_decoder_list *list = talloc_zero(NULL, struct mp_decoder_list);
for (int i = 0; mpcodecs_vd_drivers[i] != NULL; i++)
mpcodecs_vd_drivers[i]->add_decoders(list);
return list;
}
static struct mp_decoder_list *mp_select_video_decoders(const char *codec,
char *selection)
{
struct mp_decoder_list *list = mp_video_decoder_list();
struct mp_decoder_list *new = mp_select_decoders(list, codec, selection);
talloc_free(list);
return new;
}
static const struct vd_functions *find_driver(const char *name)
{
for (int i = 0; mpcodecs_vd_drivers[i] != NULL; i++) {
if (strcmp(mpcodecs_vd_drivers[i]->name, name) == 0)
return mpcodecs_vd_drivers[i];
}
return NULL;
}
int init_best_video_codec(sh_video_t *sh_video, char* video_decoders)
{
assert(!sh_video->initialized);
struct mp_decoder_entry *decoder = NULL;
struct mp_decoder_list *list =
mp_select_video_decoders(sh_video->gsh->codec, video_decoders);
mp_print_decoders(MSGT_DECVIDEO, MSGL_V, "Codec list:", list);
for (int n = 0; n < list->num_entries; n++) {
struct mp_decoder_entry *sel = &list->entries[n];
const struct vd_functions *driver = find_driver(sel->family);
if (!driver)
continue;
mp_tmsg(MSGT_DECVIDEO, MSGL_V, "Opening video decoder %s:%s\n",
sel->family, sel->decoder);
sh_video->vd_driver = driver;
if (init_video_codec(sh_video, sel->decoder)) {
decoder = sel;
break;
}
sh_video->vd_driver = NULL;
mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "Video decoder init failed for "
"%s:%s\n", sel->family, sel->decoder);
}
if (sh_video->initialized) {
sh_video->gsh->decoder_desc =
talloc_asprintf(NULL, "%s [%s:%s]", decoder->desc, decoder->family,
decoder->decoder);
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Selected video codec: %s\n",
sh_video->gsh->decoder_desc);
} else {
mp_msg(MSGT_DECVIDEO, MSGL_ERR,
"Failed to initialize a video decoder for codec '%s'.\n",
sh_video->gsh->codec ? sh_video->gsh->codec : "<unknown>");
}
talloc_free(list);
return sh_video->initialized;
}
void *decode_video(sh_video_t *sh_video, struct demux_packet *packet,
int drop_frame, double pts)
{
mp_image_t *mpi = NULL;
struct MPOpts *opts = sh_video->opts;
if (opts->correct_pts && pts != MP_NOPTS_VALUE) {
int delay = get_current_video_decoder_lag(sh_video);
if (delay >= 0) {
if (delay > sh_video->num_buffered_pts)
#if 0
// this is disabled because vd_ffmpeg reports the same lag
// after seek even when there are no buffered frames,
// leading to incorrect error messages
mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Not enough buffered pts\n");
#else
;
#endif
else
sh_video->num_buffered_pts = delay;
}
if (sh_video->num_buffered_pts ==
sizeof(sh_video->buffered_pts) / sizeof(double))
mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Too many buffered pts\n");
else {
int i, j;
for (i = 0; i < sh_video->num_buffered_pts; i++)
if (sh_video->buffered_pts[i] < pts)
break;
for (j = sh_video->num_buffered_pts; j > i; j--)
sh_video->buffered_pts[j] = sh_video->buffered_pts[j - 1];
sh_video->buffered_pts[i] = pts;
sh_video->num_buffered_pts++;
}
}
mpi = sh_video->vd_driver->decode(sh_video, packet, drop_frame, &pts);
//------------------------ frame decoded. --------------------
if (!mpi || drop_frame) {
talloc_free(mpi);
return NULL; // error / skipped frame
}
if (opts->field_dominance == 0)
mpi->fields |= MP_IMGFIELD_TOP_FIRST;
else if (opts->field_dominance == 1)
mpi->fields &= ~MP_IMGFIELD_TOP_FIRST;
double prevpts = sh_video->codec_reordered_pts;
sh_video->prev_codec_reordered_pts = prevpts;
sh_video->codec_reordered_pts = pts;
if (prevpts != MP_NOPTS_VALUE && pts <= prevpts
|| pts == MP_NOPTS_VALUE)
sh_video->num_reordered_pts_problems++;
prevpts = sh_video->sorted_pts;
if (opts->correct_pts) {
if (sh_video->num_buffered_pts) {
sh_video->num_buffered_pts--;
sh_video->sorted_pts =
sh_video->buffered_pts[sh_video->num_buffered_pts];
} else {
mp_msg(MSGT_CPLAYER, MSGL_ERR,
"No pts value from demuxer to use for frame!\n");
sh_video->sorted_pts = MP_NOPTS_VALUE;
}
}
pts = sh_video->sorted_pts;
if (prevpts != MP_NOPTS_VALUE && pts <= prevpts
|| pts == MP_NOPTS_VALUE)
sh_video->num_sorted_pts_problems++;
return mpi;
}
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