static int slin8_to_slin16_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
{
struct slin8_to_slin16_pvt *resamp_pvt = pvt->pvt;
void *resampler = resamp_pvt->resampler;
float resample_factor = resamp_pvt->resample_factor;
return resample_frame(pvt, resampler, resample_factor, f);
}
int mix_add(mix_t *mix, AVFrame *frame, unsigned int idx, output_t *output) {
const char *err;
err = "index out of range";
if (idx >= NUM_INPUTS)
goto err;
err = "mixer not initialized";
if (!mix->src_ctxs[idx])
goto err;
dbg("stream %i pts_off %llu in pts %llu in frame pts %llu samples %u mix out pts %llu",
idx,
(unsigned long long) mix->pts_offs[idx],
(unsigned long long) mix->in_pts[idx],
(unsigned long long) frame->pts,
frame->nb_samples,
(unsigned long long) mix->out_pts);
// adjust for media started late
if (G_UNLIKELY(mix->pts_offs[idx] == (uint64_t) -1LL))
mix->pts_offs[idx] = mix->out_pts - frame->pts;
frame->pts += mix->pts_offs[idx];
// fill missing time
mix_silence_fill_idx_upto(mix, idx, frame->pts);
uint64_t next_pts = frame->pts + frame->nb_samples;
err = "failed to add frame to mixer";
if (av_buffersrc_add_frame(mix->src_ctxs[idx], frame))
goto err;
// update running counters
if (next_pts > mix->out_pts)
mix->out_pts = next_pts;
if (next_pts > mix->in_pts[idx])
mix->in_pts[idx] = next_pts;
av_frame_free(&frame);
mix_silence_fill(mix);
while (1) {
int ret = av_buffersink_get_frame(mix->sink_ctx, mix->sink_frame);
err = "failed to get frame from mixer";
if (ret < 0) {
if (ret == AVERROR(EAGAIN))
break;
else
goto err;
}
frame = resample_frame(&mix->resample, mix->sink_frame, &mix->format);
ret = output_add(output, frame);
av_frame_unref(mix->sink_frame);
av_frame_free(&frame);
if (ret)
return -1;
}
return 0;
err:
ilog(LOG_ERR, "Failed to add frame to mixer: %s", err);
av_frame_free(&frame);
return -1;
}
