/* * Copyright (c) 2013 Nicolas George * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with FFmpeg; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/avassert.h"#include "libavutil/opt.h"#include "avfilter.h"#include "filters.h"#include "framesync.h"#include "internal.h" #define OFFSET(member) offsetof(FFFrameSync, member)#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM static const char *framesync_name(void *ptr){ return "framesync";} static const AVOption framesync_options[] = { { "eof_action", "Action to take when encountering EOF from secondary input ", OFFSET(opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT }, EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" }, { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" }, { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" }, { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" }, { "shortest", "force termination when the shortest input terminates", OFFSET(opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, { "repeatlast", "extend last frame of secondary streams beyond EOF", OFFSET(opt_repeatlast), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, { NULL }};static const AVClass framesync_class = { .version = LIBAVUTIL_VERSION_INT, .class_name = "framesync", .item_name = framesync_name, .category = AV_CLASS_CATEGORY_FILTER, .option = framesync_options, .parent_log_context_offset = OFFSET(parent),}; enum { STATE_BOF, STATE_RUN, STATE_EOF,}; static int consume_from_fifos(FFFrameSync *fs); const AVClass *framesync_get_class(void){ return &framesync_class;} void ff_framesync_preinit(FFFrameSync *fs){ if (fs->class) return; fs->class = &framesync_class; av_opt_set_defaults(fs);} int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in){ /* For filters with several outputs, we will not be able to assume which output is relevant for ff_outlink_frame_wanted() and ff_outlink_set_status(). To be designed when needed. */ av_assert0(parent->nb_outputs == 1); ff_framesync_preinit(fs); fs->parent = parent; fs->nb_in = nb_in; fs->in = av_calloc(nb_in, sizeof(*fs->in)); if (!fs->in) return AVERROR(ENOMEM); return 0;} static void framesync_eof(FFFrameSync *fs){ fs->eof = 1; fs->frame_ready = 0; ff_outlink_set_status(fs->parent->outputs[0], AVERROR_EOF, AV_NOPTS_VALUE);} static void framesync_sync_level_update(FFFrameSync *fs){ unsigned i, level = 0; for (i = 0; i < fs->nb_in; i++) if (fs->in[i].state != STATE_EOF) level = FFMAX(level, fs->in[i].sync); av_assert0(level <= fs->sync_level); if (level < fs->sync_level) av_log(fs, AV_LOG_VERBOSE, "Sync level %u\n", level); if (level) fs->sync_level = level; else framesync_eof(fs);} int ff_framesync_configure(FFFrameSync *fs){ unsigned i; int64_t gcd, lcm; if (!fs->opt_repeatlast || fs->opt_eof_action == EOF_ACTION_PASS) { fs->opt_repeatlast = 0; fs->opt_eof_action = EOF_ACTION_PASS; } if (fs->opt_shortest || fs->opt_eof_action == EOF_ACTION_ENDALL) { fs->opt_shortest = 1; fs->opt_eof_action = EOF_ACTION_ENDALL; } if (fs->opt_shortest) { for (i = 0; i < fs->nb_in; i++) fs->in[i].after = EXT_STOP; } if (!fs->opt_repeatlast) { for (i = 1; i < fs->nb_in; i++) { fs->in[i].after = EXT_NULL; fs->in[i].sync = 0; } } if (!fs->time_base.num) { for (i = 0; i < fs->nb_in; i++) { if (fs->in[i].sync) { if (fs->time_base.num) { gcd = av_gcd(fs->time_base.den, fs->in[i].time_base.den); lcm = (fs->time_base.den / gcd) * fs->in[i].time_base.den; if (lcm < AV_TIME_BASE / 2) { fs->time_base.den = lcm; fs->time_base.num = av_gcd(fs->time_base.num, fs->in[i].time_base.num); } else { fs->time_base.num = 1; fs->time_base.den = AV_TIME_BASE; break; } } else { fs->time_base = fs->in[i].time_base; } } } if (!fs->time_base.num) { av_log(fs, AV_LOG_ERROR, "Impossible to set time base\n"); return AVERROR(EINVAL); } av_log(fs, AV_LOG_VERBOSE, "Selected %d/%d time base\n", fs->time_base.num, fs->time_base.den); } for (i = 0; i < fs->nb_in; i++) fs->in[i].pts = fs->in[i].pts_next = AV_NOPTS_VALUE; fs->sync_level = UINT_MAX; framesync_sync_level_update(fs); return 0;} static int framesync_advance(FFFrameSync *fs){ unsigned i; int64_t pts; int ret; while (!(fs->frame_ready || fs->eof)) { ret = consume_from_fifos(fs); if (ret <= 0) return ret; pts = INT64_MAX; for (i = 0; i < fs->nb_in; i++) if (fs->in[i].have_next && fs->in[i].pts_next < pts) pts = fs->in[i].pts_next; if (pts == INT64_MAX) { framesync_eof(fs); break; } for (i = 0; i < fs->nb_in; i++) { if (fs->in[i].pts_next == pts || (fs->in[i].before == EXT_INFINITY && fs->in[i].state == STATE_BOF)) { av_frame_free(&fs->in[i].frame); fs->in[i].frame = fs->in[i].frame_next; fs->in[i].pts = fs->in[i].pts_next; fs->in[i].frame_next = NULL; fs->in[i].pts_next = AV_NOPTS_VALUE; fs->in[i].have_next = 0; fs->in[i].state = fs->in[i].frame ? STATE_RUN : STATE_EOF; if (fs->in[i].sync == fs->sync_level && fs->in[i].frame) fs->frame_ready = 1; if (fs->in[i].state == STATE_EOF && fs->in[i].after == EXT_STOP) framesync_eof(fs); } } if (fs->frame_ready) for (i = 0; i < fs->nb_in; i++) if ((fs->in[i].state == STATE_BOF && fs->in[i].before == EXT_STOP)) fs->frame_ready = 0; fs->pts = pts; } return 0;} static int64_t framesync_pts_extrapolate(FFFrameSync *fs, unsigned in, int64_t pts){ /* Possible enhancement: use the link's frame rate */ return pts + 1;} static void framesync_inject_frame(FFFrameSync *fs, unsigned in, AVFrame *frame){ int64_t pts; av_assert0(!fs->in[in].have_next); av_assert0(frame); pts = av_rescale_q(frame->pts, fs->in[in].time_base, fs->time_base); frame->pts = pts; fs->in[in].frame_next = frame; fs->in[in].pts_next = pts; fs->in[in].have_next = 1;} static void framesync_inject_status(FFFrameSync *fs, unsigned in, int status, int64_t pts){ av_assert0(!fs->in[in].have_next); pts = fs->in[in].state != STATE_RUN || fs->in[in].after == EXT_INFINITY ? INT64_MAX : framesync_pts_extrapolate(fs, in, fs->in[in].pts); fs->in[in].sync = 0; framesync_sync_level_update(fs); fs->in[in].frame_next = NULL; fs->in[in].pts_next = pts; fs->in[in].have_next = 1;} int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get){ AVFrame *frame; unsigned need_copy = 0, i; int64_t pts_next; int ret; if (!fs->in[in].frame) { *rframe = NULL; return 0; } frame = fs->in[in].frame; if (get) { /* Find out if we need to copy the frame: is there another sync stream, and do we know if its current frame will outlast this one? */ pts_next = fs->in[in].have_next ? fs->in[in].pts_next : INT64_MAX; for (i = 0; i < fs->nb_in && !need_copy; i++) if (i != in && fs->in[i].sync && (!fs->in[i].have_next || fs->in[i].pts_next < pts_next)) need_copy = 1; if (need_copy) { if (!(frame = av_frame_clone(frame))) return AVERROR(ENOMEM); if ((ret = av_frame_make_writable(frame)) < 0) { av_frame_free(&frame); return ret; } } else { fs->in[in].frame = NULL; } fs->frame_ready = 0; } *rframe = frame; return 0;} void ff_framesync_uninit(FFFrameSync *fs){ unsigned i; for (i = 0; i < fs->nb_in; i++) { av_frame_free(&fs->in[i].frame); av_frame_free(&fs->in[i].frame_next); } av_freep(&fs->in);} static int consume_from_fifos(FFFrameSync *fs){ AVFilterContext *ctx = fs->parent; AVFrame *frame = NULL; int64_t pts; unsigned i, nb_active, nb_miss; int ret, status; nb_active = nb_miss = 0; for (i = 0; i < fs->nb_in; i++) { if (fs->in[i].have_next || fs->in[i].state == STATE_EOF) continue; nb_active++; ret = ff_inlink_consume_frame(ctx->inputs[i], &frame); if (ret < 0) return ret; if (ret) { av_assert0(frame); framesync_inject_frame(fs, i, frame); } else { ret = ff_inlink_acknowledge_status(ctx->inputs[i], &status, &pts); if (ret > 0) { framesync_inject_status(fs, i, status, pts); } else if (!ret) { nb_miss++; } } } if (nb_miss) { if (nb_miss == nb_active && !ff_outlink_frame_wanted(ctx->outputs[0])) return FFERROR_NOT_READY; for (i = 0; i < fs->nb_in; i++) if (!fs->in[i].have_next && fs->in[i].state != STATE_EOF) ff_inlink_request_frame(ctx->inputs[i]); return 0; } return 1;} int ff_framesync_activate(FFFrameSync *fs){ int ret; ret = framesync_advance(fs); if (ret < 0) return ret; if (fs->eof || !fs->frame_ready) return 0; ret = fs->on_event(fs); if (ret < 0) return ret; fs->frame_ready = 0; return 0;} int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent){ int ret; ret = ff_framesync_init(fs, parent, 2); if (ret < 0) return ret; fs->in[0].time_base = parent->inputs[0]->time_base; fs->in[1].time_base = parent->inputs[1]->time_base; fs->in[0].sync = 2; fs->in[0].before = EXT_STOP; fs->in[0].after = EXT_INFINITY; fs->in[1].sync = 1; fs->in[1].before = EXT_NULL; fs->in[1].after = EXT_INFINITY; return 0;} int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1){ AVFilterContext *ctx = fs->parent; AVFrame *mainpic = NULL, *secondpic = NULL; int ret; if ((ret = ff_framesync_get_frame(fs, 0, &mainpic, 1)) < 0 || (ret = ff_framesync_get_frame(fs, 1, &secondpic, 0)) < 0) { av_frame_free(&mainpic); return ret; } av_assert0(mainpic); mainpic->pts = av_rescale_q(fs->pts, fs->time_base, ctx->outputs[0]->time_base); if (ctx->is_disabled) secondpic = NULL; *f0 = mainpic; *f1 = secondpic; return 0;} int ff_framesync_dualinput_get_writable(FFFrameSync *fs, AVFrame **f0, AVFrame **f1){ int ret; ret = ff_framesync_dualinput_get(fs, f0, f1); if (ret < 0) return ret; ret = ff_inlink_make_frame_writable(fs->parent->inputs[0], f0); if (ret < 0) { av_frame_free(f0); av_frame_free(f1); return ret; } return 0;}
/*
* Copyright (c) 2013 Nicolas George
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.h"
#include "framesync.h"
#include "internal.h"
#define OFFSET(member) offsetof(FFFrameSync, member)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
static const char *framesync_name(void *ptr)
{
return "framesync";
}
static const AVOption framesync_options[] = {
{ "eof_action", "Action to take when encountering EOF from secondary input ",
OFFSET(opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" },
{ "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" },
{ "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" },
{ "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" },
{ "shortest", "force termination when the shortest input terminates", OFFSET(opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "repeatlast", "extend last frame of secondary streams beyond EOF", OFFSET(opt_repeatlast), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ NULL }
};
static const AVClass framesync_class = {
.version = LIBAVUTIL_VERSION_INT,
.class_name = "framesync",
.item_name = framesync_name,
.category = AV_CLASS_CATEGORY_FILTER,
.option = framesync_options,
.parent_log_context_offset = OFFSET(parent),
};
enum {
STATE_BOF,
STATE_RUN,
STATE_EOF,
};
static int consume_from_fifos(FFFrameSync *fs);
const AVClass *framesync_get_class(void)
{
return &framesync_class;
}
void ff_framesync_preinit(FFFrameSync *fs)
{
if (fs->class)
return;
fs->class = &framesync_class;
av_opt_set_defaults(fs);
}
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
{
/* For filters with several outputs, we will not be able to assume which
output is relevant for ff_outlink_frame_wanted() and
ff_outlink_set_status(). To be designed when needed. */
av_assert0(parent->nb_outputs == 1);
ff_framesync_preinit(fs);
fs->parent = parent;
fs->nb_in = nb_in;
fs->in = av_calloc(nb_in, sizeof(*fs->in));
if (!fs->in)
return AVERROR(ENOMEM);
return 0;
}
static void framesync_eof(FFFrameSync *fs)
{
fs->eof = 1;
fs->frame_ready = 0;
ff_outlink_set_status(fs->parent->outputs[0], AVERROR_EOF, AV_NOPTS_VALUE);
}
static void framesync_sync_level_update(FFFrameSync *fs)
{
unsigned i, level = 0;
for (i = 0; i < fs->nb_in; i++)
if (fs->in[i].state != STATE_EOF)
level = FFMAX(level, fs->in[i].sync);
av_assert0(level <= fs->sync_level);
if (level < fs->sync_level)
av_log(fs, AV_LOG_VERBOSE, "Sync level %u\n", level);
if (level)
fs->sync_level = level;
else
framesync_eof(fs);
}
int ff_framesync_configure(FFFrameSync *fs)
{
unsigned i;
int64_t gcd, lcm;
if (!fs->opt_repeatlast || fs->opt_eof_action == EOF_ACTION_PASS) {
fs->opt_repeatlast = 0;
fs->opt_eof_action = EOF_ACTION_PASS;
}
if (fs->opt_shortest || fs->opt_eof_action == EOF_ACTION_ENDALL) {
fs->opt_shortest = 1;
fs->opt_eof_action = EOF_ACTION_ENDALL;
}
if (fs->opt_shortest) {
for (i = 0; i < fs->nb_in; i++)
fs->in[i].after = EXT_STOP;
}
if (!fs->opt_repeatlast) {
for (i = 1; i < fs->nb_in; i++) {
fs->in[i].after = EXT_NULL;
fs->in[i].sync = 0;
}
}
if (!fs->time_base.num) {
for (i = 0; i < fs->nb_in; i++) {
if (fs->in[i].sync) {
if (fs->time_base.num) {
gcd = av_gcd(fs->time_base.den, fs->in[i].time_base.den);
lcm = (fs->time_base.den / gcd) * fs->in[i].time_base.den;
if (lcm < AV_TIME_BASE / 2) {
fs->time_base.den = lcm;
fs->time_base.num = av_gcd(fs->time_base.num,
fs->in[i].time_base.num);
} else {
fs->time_base.num = 1;
fs->time_base.den = AV_TIME_BASE;
break;
}
} else {
fs->time_base = fs->in[i].time_base;
}
}
}
if (!fs->time_base.num) {
av_log(fs, AV_LOG_ERROR, "Impossible to set time base\n");
return AVERROR(EINVAL);
}
av_log(fs, AV_LOG_VERBOSE, "Selected %d/%d time base\n",
fs->time_base.num, fs->time_base.den);
}
for (i = 0; i < fs->nb_in; i++)
fs->in[i].pts = fs->in[i].pts_next = AV_NOPTS_VALUE;
fs->sync_level = UINT_MAX;
framesync_sync_level_update(fs);
return 0;
}
static int framesync_advance(FFFrameSync *fs)
{
unsigned i;
int64_t pts;
int ret;
while (!(fs->frame_ready || fs->eof)) {
ret = consume_from_fifos(fs);
if (ret <= 0)
return ret;
pts = INT64_MAX;
for (i = 0; i < fs->nb_in; i++)
if (fs->in[i].have_next && fs->in[i].pts_next < pts)
pts = fs->in[i].pts_next;
if (pts == INT64_MAX) {
framesync_eof(fs);
break;
}
for (i = 0; i < fs->nb_in; i++) {
if (fs->in[i].pts_next == pts ||
(fs->in[i].before == EXT_INFINITY &&
fs->in[i].state == STATE_BOF)) {
av_frame_free(&fs->in[i].frame);
fs->in[i].frame = fs->in[i].frame_next;
fs->in[i].pts = fs->in[i].pts_next;
fs->in[i].frame_next = NULL;
fs->in[i].pts_next = AV_NOPTS_VALUE;
fs->in[i].have_next = 0;
fs->in[i].state = fs->in[i].frame ? STATE_RUN : STATE_EOF;
if (fs->in[i].sync == fs->sync_level && fs->in[i].frame)
fs->frame_ready = 1;
if (fs->in[i].state == STATE_EOF &&
fs->in[i].after == EXT_STOP)
framesync_eof(fs);
}
}
if (fs->frame_ready)
for (i = 0; i < fs->nb_in; i++)
if ((fs->in[i].state == STATE_BOF &&
fs->in[i].before == EXT_STOP))
fs->frame_ready = 0;
fs->pts = pts;
}
return 0;
}
static int64_t framesync_pts_extrapolate(FFFrameSync *fs, unsigned in,
int64_t pts)
{
/* Possible enhancement: use the link's frame rate */
return pts + 1;
}
static void framesync_inject_frame(FFFrameSync *fs, unsigned in, AVFrame *frame)
{
int64_t pts;
av_assert0(!fs->in[in].have_next);
av_assert0(frame);
pts = av_rescale_q(frame->pts, fs->in[in].time_base, fs->time_base);
frame->pts = pts;
fs->in[in].frame_next = frame;
fs->in[in].pts_next = pts;
fs->in[in].have_next = 1;
}
static void framesync_inject_status(FFFrameSync *fs, unsigned in, int status, int64_t pts)
{
av_assert0(!fs->in[in].have_next);
pts = fs->in[in].state != STATE_RUN || fs->in[in].after == EXT_INFINITY
? INT64_MAX : framesync_pts_extrapolate(fs, in, fs->in[in].pts);
fs->in[in].sync = 0;
framesync_sync_level_update(fs);
fs->in[in].frame_next = NULL;
fs->in[in].pts_next = pts;
fs->in[in].have_next = 1;
}
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe,
unsigned get)
{
AVFrame *frame;
unsigned need_copy = 0, i;
int64_t pts_next;
int ret;
if (!fs->in[in].frame) {
*rframe = NULL;
return 0;
}
frame = fs->in[in].frame;
if (get) {
/* Find out if we need to copy the frame: is there another sync
stream, and do we know if its current frame will outlast this one? */
pts_next = fs->in[in].have_next ? fs->in[in].pts_next : INT64_MAX;
for (i = 0; i < fs->nb_in && !need_copy; i++)
if (i != in && fs->in[i].sync &&
(!fs->in[i].have_next || fs->in[i].pts_next < pts_next))
need_copy = 1;
if (need_copy) {
if (!(frame = av_frame_clone(frame)))
return AVERROR(ENOMEM);
if ((ret = av_frame_make_writable(frame)) < 0) {
av_frame_free(&frame);
return ret;
}
} else {
fs->in[in].frame = NULL;
}
fs->frame_ready = 0;
}
*rframe = frame;
return 0;
}
void ff_framesync_uninit(FFFrameSync *fs)
{
unsigned i;
for (i = 0; i < fs->nb_in; i++) {
av_frame_free(&fs->in[i].frame);
av_frame_free(&fs->in[i].frame_next);
}
av_freep(&fs->in);
}
static int consume_from_fifos(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
AVFrame *frame = NULL;
int64_t pts;
unsigned i, nb_active, nb_miss;
int ret, status;
nb_active = nb_miss = 0;
for (i = 0; i < fs->nb_in; i++) {
if (fs->in[i].have_next || fs->in[i].state == STATE_EOF)
continue;
nb_active++;
ret = ff_inlink_consume_frame(ctx->inputs[i], &frame);
if (ret < 0)
return ret;
if (ret) {
av_assert0(frame);
framesync_inject_frame(fs, i, frame);
} else {
ret = ff_inlink_acknowledge_status(ctx->inputs[i], &status, &pts);
if (ret > 0) {
framesync_inject_status(fs, i, status, pts);
} else if (!ret) {
nb_miss++;
}
}
}
if (nb_miss) {
if (nb_miss == nb_active && !ff_outlink_frame_wanted(ctx->outputs[0]))
return FFERROR_NOT_READY;
for (i = 0; i < fs->nb_in; i++)
if (!fs->in[i].have_next && fs->in[i].state != STATE_EOF)
ff_inlink_request_frame(ctx->inputs[i]);
return 0;
}
return 1;
}
int ff_framesync_activate(FFFrameSync *fs)
{
int ret;
ret = framesync_advance(fs);
if (ret < 0)
return ret;
if (fs->eof || !fs->frame_ready)
return 0;
ret = fs->on_event(fs);
if (ret < 0)
return ret;
fs->frame_ready = 0;
return 0;
}
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
{
int ret;
ret = ff_framesync_init(fs, parent, 2);
if (ret < 0)
return ret;
fs->in[0].time_base = parent->inputs[0]->time_base;
fs->in[1].time_base = parent->inputs[1]->time_base;
fs->in[0].sync = 2;
fs->in[0].before = EXT_STOP;
fs->in[0].after = EXT_INFINITY;
fs->in[1].sync = 1;
fs->in[1].before = EXT_NULL;
fs->in[1].after = EXT_INFINITY;
return 0;
}
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
{
AVFilterContext *ctx = fs->parent;
AVFrame *mainpic = NULL, *secondpic = NULL;
int ret;
if ((ret = ff_framesync_get_frame(fs, 0, &mainpic, 1)) < 0 ||
(ret = ff_framesync_get_frame(fs, 1, &secondpic, 0)) < 0) {
av_frame_free(&mainpic);
return ret;
}
av_assert0(mainpic);
mainpic->pts = av_rescale_q(fs->pts, fs->time_base, ctx->outputs[0]->time_base);
if (ctx->is_disabled)
secondpic = NULL;
*f0 = mainpic;
*f1 = secondpic;
return 0;
}
int ff_framesync_dualinput_get_writable(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
{
int ret;
ret = ff_framesync_dualinput_get(fs, f0, f1);
if (ret < 0)
return ret;
ret = ff_inlink_make_frame_writable(fs->parent->inputs[0], f0);
if (ret < 0) {
av_frame_free(f0);
av_frame_free(f1);
return ret;
}
return 0;
}