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af_amerge: move nb_in_ch into the in structure.

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With that change, there is only one array for the inputs,
it will make easier to implement a variable number of inputs.
This commit is contained in:
Nicolas George 2012-05-31 23:55:33 +02:00
parent e45a92dc88
commit e8e492b302
1 changed files with 19 additions and 19 deletions
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38
libavfilter/af_amerge.c
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@ -30,11 +30,11 @@
#include "internal.h"
typedef struct {
int nb_in_ch[2]; /**< number of channels for each input */
int route[SWR_CH_MAX]; /**< channels routing, see copy_samples */
int bps;
struct amerge_input {
struct FFBufQueue queue;
int nb_ch; /**< number of channels for the input */
int nb_samples;
int pos;
} in[2];
@ -70,23 +70,23 @@ static int query_formats(AVFilterContext *ctx)
av_get_channel_layout_string(buf, sizeof(buf), 0, inlayout[i]);
av_log(ctx, AV_LOG_INFO, "Using \"%s\" for input %d\n", buf, i + 1);
}
am->nb_in_ch[i] = av_get_channel_layout_nb_channels(inlayout[i]);
am->in[i].nb_ch = av_get_channel_layout_nb_channels(inlayout[i]);
}
if (am->nb_in_ch[0] + am->nb_in_ch[1] > SWR_CH_MAX) {
if (am->in[0].nb_ch + am->in[1].nb_ch > SWR_CH_MAX) {
av_log(ctx, AV_LOG_ERROR, "Too many channels (max %d)\n", SWR_CH_MAX);
return AVERROR(EINVAL);
}
if (inlayout[0] & inlayout[1]) {
av_log(ctx, AV_LOG_WARNING,
"Inputs overlap: output layout will be meaningless\n");
for (i = 0; i < am->nb_in_ch[0] + am->nb_in_ch[1]; i++)
for (i = 0; i < am->in[0].nb_ch + am->in[1].nb_ch; i++)
am->route[i] = i;
outlayout = av_get_default_channel_layout(am->nb_in_ch[0] +
am->nb_in_ch[1]);
outlayout = av_get_default_channel_layout(am->in[0].nb_ch +
am->in[1].nb_ch);
if (!outlayout)
outlayout = ((int64_t)1 << (am->nb_in_ch[0] + am->nb_in_ch[1])) - 1;
outlayout = ((int64_t)1 << (am->in[0].nb_ch + am->in[1].nb_ch)) - 1;
} else {
int *route[2] = { am->route, am->route + am->nb_in_ch[0] };
int *route[2] = { am->route, am->route + am->in[0].nb_ch };
int c, out_ch_number = 0;
outlayout = inlayout[0] | inlayout[1];
@ -151,11 +151,11 @@ static int request_frame(AVFilterLink *outlink)
/**
* Copy samples from two input streams to one output stream.
* @param nb_in_ch number of channels in each input stream
* @param in inputs; used only for the nb_ch field;
* @param route routing values;
* input channel i goes to output channel route[i];
* i < nb_in_ch[0] are the channels from the first output;
* i >= nb_in_ch[0] are the channels from the second output
* i < in[0].nb_ch are the channels from the first output;
* i >= in[0].nb_ch are the channels from the second output
* @param ins pointer to the samples of each inputs, in packed format;
* will be left at the end of the copied samples
* @param outs pointer to the samples of the output, in packet format;
@ -164,7 +164,7 @@ static int request_frame(AVFilterLink *outlink)
* @param ns number of samples to copy
* @param bps bytes per sample
*/
static inline void copy_samples(int nb_in_ch[2], int *route, uint8_t *ins[2],
static inline void copy_samples(struct amerge_input in[2], int *route, uint8_t *ins[2],
uint8_t **outs, int ns, int bps)
{
int *route_cur;
@ -173,12 +173,12 @@ static inline void copy_samples(int nb_in_ch[2], int *route, uint8_t *ins[2],
while (ns--) {
route_cur = route;
for (i = 0; i < 2; i++) {
for (c = 0; c < nb_in_ch[i]; c++) {
for (c = 0; c < in[i].nb_ch; c++) {
memcpy((*outs) + bps * *(route_cur++), ins[i], bps);
ins[i] += bps;
}
}
*outs += (nb_in_ch[0] + nb_in_ch[1]) * bps;
*outs += (in[0].nb_ch + in[1].nb_ch) * bps;
}
}
@ -204,7 +204,7 @@ static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)
for (i = 0; i < 2; i++) {
inbuf[i] = ff_bufqueue_peek(&am->in[i].queue, 0);
ins[i] = inbuf[i]->data[0] +
am->in[i].pos * am->nb_in_ch[i] * am->bps;
am->in[i].pos * am->in[i].nb_ch * am->bps;
}
outbuf->pts = inbuf[0]->pts == AV_NOPTS_VALUE ? AV_NOPTS_VALUE :
inbuf[0]->pts +
@ -224,16 +224,16 @@ static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)
+~13% overall (including two common decoders) */
switch (am->bps) {
case 1:
copy_samples(am->nb_in_ch, am->route, ins, &outs, ns, 1);
copy_samples(am->in, am->route, ins, &outs, ns, 1);
break;
case 2:
copy_samples(am->nb_in_ch, am->route, ins, &outs, ns, 2);
copy_samples(am->in, am->route, ins, &outs, ns, 2);
break;
case 4:
copy_samples(am->nb_in_ch, am->route, ins, &outs, ns, 4);
copy_samples(am->in, am->route, ins, &outs, ns, 4);
break;
default:
copy_samples(am->nb_in_ch, am->route, ins, &outs, ns, am->bps);
copy_samples(am->in, am->route, ins, &outs, ns, am->bps);
break;
}