mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter/af_amerge: port to activate API
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
d05c3b9cee
commit
ac86011b1f
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@ -31,8 +31,8 @@
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#include "libavutil/channel_layout.h"
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#include "libavutil/opt.h"
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#include "avfilter.h"
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#include "filters.h"
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#include "audio.h"
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#include "bufferqueue.h"
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#include "internal.h"
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#define SWR_CH_MAX 64
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@ -43,10 +43,7 @@ typedef struct AMergeContext {
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int route[SWR_CH_MAX]; /**< channels routing, see copy_samples */
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int bps;
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struct amerge_input {
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struct FFBufQueue queue;
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int nb_ch; /**< number of channels for the input */
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int nb_samples;
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int pos;
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} *in;
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} AMergeContext;
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@ -67,8 +64,6 @@ static av_cold void uninit(AVFilterContext *ctx)
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int i;
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for (i = 0; i < s->nb_inputs; i++) {
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if (s->in)
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ff_bufqueue_discard_all(&s->in[i].queue);
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if (ctx->input_pads)
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av_freep(&ctx->input_pads[i].name);
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}
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@ -183,21 +178,6 @@ static int config_output(AVFilterLink *outlink)
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return 0;
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}
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static int request_frame(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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AMergeContext *s = ctx->priv;
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int i, ret;
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for (i = 0; i < s->nb_inputs; i++)
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if (!s->in[i].nb_samples ||
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/* detect EOF immediately */
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(ctx->inputs[i]->status_in && !ctx->inputs[i]->status_out))
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if ((ret = ff_request_frame(ctx->inputs[i])) < 0)
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return ret;
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return 0;
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}
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/**
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* Copy samples from several input streams to one output stream.
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* @param nb_inputs number of inputs
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@ -235,88 +215,101 @@ static inline void copy_samples(int nb_inputs, struct amerge_input in[],
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}
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
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static void free_frames(int nb_inputs, AVFrame **input_frames)
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{
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AVFilterContext *ctx = inlink->dst;
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AMergeContext *s = ctx->priv;
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AVFilterLink *const outlink = ctx->outputs[0];
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int input_number;
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int nb_samples, ns, i;
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AVFrame *outbuf, *inbuf[SWR_CH_MAX];
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uint8_t *ins[SWR_CH_MAX], *outs;
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int i;
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for (i = 0; i < nb_inputs; i++)
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av_frame_free(&input_frames[i]);
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}
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for (input_number = 0; input_number < s->nb_inputs; input_number++)
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if (inlink == ctx->inputs[input_number])
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break;
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av_assert1(input_number < s->nb_inputs);
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if (ff_bufqueue_is_full(&s->in[input_number].queue)) {
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av_frame_free(&insamples);
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return AVERROR(ENOMEM);
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static int try_push_frame(AVFilterContext *ctx, int nb_samples)
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{
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AMergeContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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int i, ret;
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AVFrame *outbuf, *inbuf[SWR_CH_MAX] = { NULL };
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uint8_t *outs, *ins[SWR_CH_MAX];
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for (i = 0; i < ctx->nb_inputs; i++) {
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ret = ff_inlink_consume_samples(ctx->inputs[i], nb_samples, nb_samples, &inbuf[i]);
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if (ret < 0) {
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free_frames(i, inbuf);
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return ret;
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}
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ins[i] = inbuf[i]->data[0];
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}
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ff_bufqueue_add(ctx, &s->in[input_number].queue, av_frame_clone(insamples));
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s->in[input_number].nb_samples += insamples->nb_samples;
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av_frame_free(&insamples);
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nb_samples = s->in[0].nb_samples;
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for (i = 1; i < s->nb_inputs; i++)
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nb_samples = FFMIN(nb_samples, s->in[i].nb_samples);
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if (!nb_samples)
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return 0;
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outbuf = ff_get_audio_buffer(ctx->outputs[0], nb_samples);
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if (!outbuf)
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if (!outbuf) {
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free_frames(s->nb_inputs, inbuf);
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return AVERROR(ENOMEM);
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outs = outbuf->data[0];
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for (i = 0; i < s->nb_inputs; i++) {
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inbuf[i] = ff_bufqueue_peek(&s->in[i].queue, 0);
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ins[i] = inbuf[i]->data[0] +
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s->in[i].pos * s->in[i].nb_ch * s->bps;
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}
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av_frame_copy_props(outbuf, inbuf[0]);
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outbuf->pts = inbuf[0]->pts == AV_NOPTS_VALUE ? AV_NOPTS_VALUE :
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inbuf[0]->pts +
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av_rescale_q(s->in[0].pos,
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av_make_q(1, ctx->inputs[0]->sample_rate),
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ctx->outputs[0]->time_base);
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outs = outbuf->data[0];
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outbuf->pts = inbuf[0]->pts;
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outbuf->nb_samples = nb_samples;
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outbuf->channel_layout = outlink->channel_layout;
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outbuf->channels = outlink->channels;
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while (nb_samples) {
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ns = nb_samples;
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for (i = 0; i < s->nb_inputs; i++)
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ns = FFMIN(ns, inbuf[i]->nb_samples - s->in[i].pos);
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/* Unroll the most common sample formats: speed +~350% for the loop,
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+~13% overall (including two common decoders) */
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switch (s->bps) {
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case 1:
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, ns, 1);
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, nb_samples, 1);
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break;
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case 2:
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, ns, 2);
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, nb_samples, 2);
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break;
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case 4:
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, ns, 4);
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, nb_samples, 4);
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break;
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default:
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, ns, s->bps);
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copy_samples(s->nb_inputs, s->in, s->route, ins, &outs, nb_samples, s->bps);
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break;
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}
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nb_samples -= ns;
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for (i = 0; i < s->nb_inputs; i++) {
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s->in[i].nb_samples -= ns;
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s->in[i].pos += ns;
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if (s->in[i].pos == inbuf[i]->nb_samples) {
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s->in[i].pos = 0;
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av_frame_free(&inbuf[i]);
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ff_bufqueue_get(&s->in[i].queue);
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inbuf[i] = ff_bufqueue_peek(&s->in[i].queue, 0);
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ins[i] = inbuf[i] ? inbuf[i]->data[0] : NULL;
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}
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nb_samples = 0;
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}
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free_frames(s->nb_inputs, inbuf);
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return ff_filter_frame(ctx->outputs[0], outbuf);
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}
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static int activate(AVFilterContext *ctx)
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{
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int i, status;
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int ret, nb_samples;
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int64_t pts;
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FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[0], ctx);
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nb_samples = ff_framequeue_queued_samples(&ctx->inputs[0]->fifo);
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for (i = 1; i < ctx->nb_inputs && nb_samples > 0; i++) {
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nb_samples = FFMIN(ff_framequeue_queued_samples(&ctx->inputs[i]->fifo), nb_samples);
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}
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if (nb_samples) {
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ret = try_push_frame(ctx, nb_samples);
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if (ret < 0)
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return ret;
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}
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for (i = 0; i < ctx->nb_inputs; i++) {
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if (ff_framequeue_queued_samples(&ctx->inputs[i]->fifo))
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continue;
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if (ff_inlink_acknowledge_status(ctx->inputs[i], &status, &pts)) {
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ff_outlink_set_status(ctx->outputs[0], status, pts);
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return 0;
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} else if (ff_outlink_frame_wanted(ctx->outputs[0])) {
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ff_inlink_request_frame(ctx->inputs[i]);
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return 0;
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}
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}
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return ff_filter_frame(ctx->outputs[0], outbuf);
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return 0;
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}
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static av_cold int init(AVFilterContext *ctx)
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@ -332,7 +325,6 @@ static av_cold int init(AVFilterContext *ctx)
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AVFilterPad pad = {
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.name = name,
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.type = AVMEDIA_TYPE_AUDIO,
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.filter_frame = filter_frame,
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};
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if (!name)
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return AVERROR(ENOMEM);
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@ -349,7 +341,6 @@ static const AVFilterPad amerge_outputs[] = {
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.name = "default",
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.type = AVMEDIA_TYPE_AUDIO,
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.config_props = config_output,
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.request_frame = request_frame,
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},
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{ NULL }
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};
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@ -362,6 +353,7 @@ AVFilter ff_af_amerge = {
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.activate = activate,
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.inputs = NULL,
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.outputs = amerge_outputs,
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.priv_class = &amerge_class,
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