mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
260 lines
8.1 KiB
C
260 lines
8.1 KiB
C
/*
|
|
* Copyright (c) 2013 Stefano Sabatini
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* audio and video interleaver
|
|
*/
|
|
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/opt.h"
|
|
#include "avfilter.h"
|
|
#include "bufferqueue.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "audio.h"
|
|
#include "video.h"
|
|
|
|
typedef struct {
|
|
const AVClass *class;
|
|
int nb_inputs;
|
|
struct FFBufQueue *queues;
|
|
} InterleaveContext;
|
|
|
|
#define OFFSET(x) offsetof(InterleaveContext, x)
|
|
|
|
#define DEFINE_OPTIONS(filt_name, flags_) \
|
|
static const AVOption filt_name##_options[] = { \
|
|
{ "nb_inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
|
|
{ "n", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, .flags = flags_ }, \
|
|
{ NULL }, \
|
|
}
|
|
|
|
inline static int push_frame(AVFilterContext *ctx)
|
|
{
|
|
InterleaveContext *interleave = ctx->priv;
|
|
AVFrame *frame;
|
|
int i, queue_idx = -1;
|
|
int64_t pts_min = INT64_MAX;
|
|
|
|
/* look for oldest frame */
|
|
for (i = 0; i < ctx->nb_inputs; i++) {
|
|
struct FFBufQueue *q = &interleave->queues[i];
|
|
|
|
if (!q->available && !ctx->inputs[i]->closed)
|
|
return 0;
|
|
if (q->available) {
|
|
frame = ff_bufqueue_peek(q, 0);
|
|
if (frame->pts < pts_min) {
|
|
pts_min = frame->pts;
|
|
queue_idx = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* all inputs are closed */
|
|
if (queue_idx < 0)
|
|
return AVERROR_EOF;
|
|
|
|
frame = ff_bufqueue_get(&interleave->queues[queue_idx]);
|
|
av_log(ctx, AV_LOG_DEBUG, "queue:%d -> frame time:%f\n",
|
|
queue_idx, frame->pts * av_q2d(AV_TIME_BASE_Q));
|
|
return ff_filter_frame(ctx->outputs[0], frame);
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
InterleaveContext *interleave = ctx->priv;
|
|
unsigned in_no = FF_INLINK_IDX(inlink);
|
|
|
|
if (frame->pts == AV_NOPTS_VALUE) {
|
|
av_log(ctx, AV_LOG_WARNING,
|
|
"NOPTS value for input frame cannot be accepted, frame discarded\n");
|
|
av_frame_free(&frame);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* queue frame */
|
|
frame->pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q);
|
|
av_log(ctx, AV_LOG_DEBUG, "frame pts:%f -> queue idx:%d available:%d\n",
|
|
frame->pts * av_q2d(AV_TIME_BASE_Q), in_no, interleave->queues[in_no].available);
|
|
ff_bufqueue_add(ctx, &interleave->queues[in_no], frame);
|
|
|
|
return push_frame(ctx);
|
|
}
|
|
|
|
static int init(AVFilterContext *ctx)
|
|
{
|
|
InterleaveContext *interleave = ctx->priv;
|
|
const AVFilterPad *outpad = &ctx->filter->outputs[0];
|
|
int i;
|
|
|
|
interleave->queues = av_calloc(interleave->nb_inputs, sizeof(interleave->queues[0]));
|
|
if (!interleave->queues)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (i = 0; i < interleave->nb_inputs; i++) {
|
|
AVFilterPad inpad = { 0 };
|
|
|
|
inpad.name = av_asprintf("input%d", i);
|
|
if (!inpad.name)
|
|
return AVERROR(ENOMEM);
|
|
inpad.type = outpad->type;
|
|
inpad.filter_frame = filter_frame;
|
|
|
|
switch (outpad->type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
inpad.get_video_buffer = ff_null_get_video_buffer; break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
inpad.get_audio_buffer = ff_null_get_audio_buffer; break;
|
|
default:
|
|
av_assert0(0);
|
|
}
|
|
ff_insert_inpad(ctx, i, &inpad);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
InterleaveContext *interleave = ctx->priv;
|
|
int i;
|
|
|
|
for (i = 0; i < ctx->nb_inputs; i++) {
|
|
ff_bufqueue_discard_all(&interleave->queues[i]);
|
|
av_freep(&interleave->queues[i]);
|
|
av_freep(&ctx->input_pads[i].name);
|
|
}
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
AVFilterLink *inlink0 = ctx->inputs[0];
|
|
int i;
|
|
|
|
if (outlink->type == AVMEDIA_TYPE_VIDEO) {
|
|
outlink->time_base = AV_TIME_BASE_Q;
|
|
outlink->w = inlink0->w;
|
|
outlink->h = inlink0->h;
|
|
outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
|
|
outlink->format = inlink0->format;
|
|
outlink->frame_rate = (AVRational) {1, 0};
|
|
for (i = 1; i < ctx->nb_inputs; i++) {
|
|
AVFilterLink *inlink = ctx->inputs[i];
|
|
|
|
if (outlink->w != inlink->w ||
|
|
outlink->h != inlink->h ||
|
|
outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
|
|
outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
|
|
av_log(ctx, AV_LOG_ERROR, "Parameters for input link %s "
|
|
"(size %dx%d, SAR %d:%d) do not match the corresponding "
|
|
"output link parameters (%dx%d, SAR %d:%d)\n",
|
|
ctx->input_pads[i].name, inlink->w, inlink->h,
|
|
inlink->sample_aspect_ratio.num,
|
|
inlink->sample_aspect_ratio.den,
|
|
outlink->w, outlink->h,
|
|
outlink->sample_aspect_ratio.num,
|
|
outlink->sample_aspect_ratio.den);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
}
|
|
|
|
outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
|
|
return 0;
|
|
}
|
|
|
|
static int request_frame(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
InterleaveContext *interleave = ctx->priv;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < ctx->nb_inputs; i++) {
|
|
if (!interleave->queues[i].available && !ctx->inputs[i]->closed) {
|
|
ret = ff_request_frame(ctx->inputs[i]);
|
|
if (ret != AVERROR_EOF)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return push_frame(ctx);
|
|
}
|
|
|
|
#if CONFIG_INTERLEAVE_FILTER
|
|
|
|
DEFINE_OPTIONS(interleave, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
|
|
AVFILTER_DEFINE_CLASS(interleave);
|
|
|
|
static const AVFilterPad interleave_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_vf_interleave = {
|
|
.name = "interleave",
|
|
.description = NULL_IF_CONFIG_SMALL("Temporally interleave video inputs."),
|
|
.priv_size = sizeof(InterleaveContext),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.outputs = interleave_outputs,
|
|
.priv_class = &interleave_class,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|
|
|
|
#endif
|
|
|
|
#if CONFIG_AINTERLEAVE_FILTER
|
|
|
|
DEFINE_OPTIONS(ainterleave, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
|
|
AVFILTER_DEFINE_CLASS(ainterleave);
|
|
|
|
static const AVFilterPad ainterleave_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_af_ainterleave = {
|
|
.name = "ainterleave",
|
|
.description = NULL_IF_CONFIG_SMALL("Temporally interleave audio inputs."),
|
|
.priv_size = sizeof(InterleaveContext),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.outputs = ainterleave_outputs,
|
|
.priv_class = &ainterleave_class,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|
|
|
|
#endif
|