Commit 1b8c9271 authored by Stefano Sabatini's avatar Stefano Sabatini Committed by Anton Khirnov

lavfi: add avfilter_get_audio_buffer_ref_from_arrays().

Signed-off-by: 's avatarAnton Khirnov <anton@khirnov.net>
parent 9453c9e1
...@@ -385,6 +385,74 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms, ...@@ -385,6 +385,74 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
return ret; return ret;
} }
AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays(uint8_t **data,
int linesize, int perms,
int nb_samples,
enum AVSampleFormat sample_fmt,
uint64_t channel_layout)
{
int planes;
AVFilterBuffer *samples = av_mallocz(sizeof(*samples));
AVFilterBufferRef *samplesref = av_mallocz(sizeof(*samplesref));
if (!samples || !samplesref)
goto fail;
samplesref->buf = samples;
samplesref->buf->free = ff_avfilter_default_free_buffer;
if (!(samplesref->audio = av_mallocz(sizeof(*samplesref->audio))))
goto fail;
samplesref->audio->nb_samples = nb_samples;
samplesref->audio->channel_layout = channel_layout;
samplesref->audio->planar = av_sample_fmt_is_planar(sample_fmt);
planes = samplesref->audio->planar ? av_get_channel_layout_nb_channels(channel_layout) : 1;
/* make sure the buffer gets read permission or it's useless for output */
samplesref->perms = perms | AV_PERM_READ;
samples->refcount = 1;
samplesref->type = AVMEDIA_TYPE_AUDIO;
samplesref->format = sample_fmt;
memcpy(samples->data, data,
FFMIN(FF_ARRAY_ELEMS(samples->data), planes)*sizeof(samples->data[0]));
memcpy(samplesref->data, samples->data, sizeof(samples->data));
samples->linesize[0] = samplesref->linesize[0] = linesize;
if (planes > FF_ARRAY_ELEMS(samples->data)) {
samples-> extended_data = av_mallocz(sizeof(*samples->extended_data) *
planes);
samplesref->extended_data = av_mallocz(sizeof(*samplesref->extended_data) *
planes);
if (!samples->extended_data || !samplesref->extended_data)
goto fail;
memcpy(samples-> extended_data, data, sizeof(*data)*planes);
memcpy(samplesref->extended_data, data, sizeof(*data)*planes);
} else {
samples->extended_data = samples->data;
samplesref->extended_data = samplesref->data;
}
return samplesref;
fail:
if (samples && samples->extended_data != samples->data)
av_freep(&samples->extended_data);
if (samplesref) {
av_freep(&samplesref->audio);
if (samplesref->extended_data != samplesref->data)
av_freep(&samplesref->extended_data);
}
av_freep(&samplesref);
av_freep(&samples);
return NULL;
}
int avfilter_request_frame(AVFilterLink *link) int avfilter_request_frame(AVFilterLink *link)
{ {
FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1); FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
......
...@@ -700,6 +700,24 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms, ...@@ -700,6 +700,24 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
enum AVSampleFormat sample_fmt, int size, enum AVSampleFormat sample_fmt, int size,
uint64_t channel_layout, int planar); uint64_t channel_layout, int planar);
/**
* Create an audio buffer reference wrapped around an already
* allocated samples buffer.
*
* @param data pointers to the samples plane buffers
* @param linesize linesize for the samples plane buffers
* @param perms the required access permissions
* @param nb_samples number of samples per channel
* @param sample_fmt the format of each sample in the buffer to allocate
* @param channel_layout the channel layout of the buffer
*/
AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays(uint8_t **data,
int linesize,
int perms,
int nb_samples,
enum AVSampleFormat sample_fmt,
uint64_t channel_layout);
/** /**
* Request an input frame from the filter at the other end of the link. * Request an input frame from the filter at the other end of the link.
* *
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment