AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
int perms)
{
AVFilterBufferRef *samplesref;
int channels = av_frame_get_channels(frame);
int64_t layout = av_frame_get_channel_layout(frame);
if(av_frame_get_channels(frame) > 8) // libavfilter does not suport more than 8 channels FIXME, remove once libavfilter is fixed
return NULL;
if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) {
av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
return NULL;
}
samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels(
(uint8_t **)frame->data, frame->linesize[0], perms,
frame->nb_samples, frame->format, channels, layout);
if (!samplesref)
return NULL;
if (avfilter_copy_frame_props(samplesref, frame) < 0) {
samplesref->buf->data[0] = NULL;
avfilter_unref_bufferp(&samplesref);
}
return samplesref;
}
AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
int perms)
{
AVFilterBufferRef *picref =
avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,
frame->nb_samples, frame->format,
av_frame_get_channel_layout(frame));
if (!picref)
return NULL;
avfilter_copy_frame_props(picref, frame);
return picref;
}
AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
int perms)
{
AVFilterBufferRef *picref =
avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
frame->width, frame->height,
frame->format);
if (!picref)
return NULL;
avfilter_copy_frame_props(picref, frame);
return picref;
}
static int compat_read(AVFilterContext *ctx,
AVFilterBufferRef **pbuf, int nb_samples)
{
AVFilterBufferRef *buf;
AVFrame *frame;
int ret;
if (!pbuf)
return ff_poll_frame(ctx->inputs[0]);
frame = av_frame_alloc();
if (!frame)
return AVERROR(ENOMEM);
if (!nb_samples)
ret = av_buffersink_get_frame(ctx, frame);
else
ret = av_buffersink_get_samples(ctx, frame, nb_samples);
if (ret < 0)
goto fail;
if (ctx->inputs[0]->type == AVMEDIA_TYPE_VIDEO) {
buf = avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize,
AV_PERM_READ,
frame->width, frame->height,
frame->format);
} else {
buf = avfilter_get_audio_buffer_ref_from_arrays(frame->extended_data,
frame->linesize[0], AV_PERM_READ,
frame->nb_samples,
frame->format,
frame->channel_layout);
}
if (!buf) {
ret = AVERROR(ENOMEM);
goto fail;
}
avfilter_copy_frame_props(buf, frame);
buf->buf->priv = frame;
buf->buf->free = compat_free_buffer;
*pbuf = buf;
return 0;
fail:
av_frame_free(&frame);
return ret;
}
AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
int perms)
{
AVFilterBufferRef *samplesref =
avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,
frame->nb_samples, frame->format,
av_frame_get_channel_layout(frame));
if (!samplesref)
return NULL;
if (avfilter_copy_frame_props(samplesref, frame) < 0) {
samplesref->buf->data[0] = NULL;
avfilter_unref_bufferp(&samplesref);
}
return samplesref;
}
