* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavutil/audioconvert.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"
-AVFilterBufferRef *ff_null_get_audio_buffer(AVFilterLink *link, int perms,
- int nb_samples)
+AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
{
- return ff_get_audio_buffer(link->dst->outputs[0], perms, nb_samples);
+ return ff_get_audio_buffer(link->dst->outputs[0], nb_samples);
}
-AVFilterBufferRef *ff_default_get_audio_buffer(AVFilterLink *link, int perms,
- int nb_samples)
+AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
{
- AVFilterBufferRef *samplesref = NULL;
- uint8_t **data;
- int planar = av_sample_fmt_is_planar(link->format);
- int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout);
- int planes = planar ? nb_channels : 1;
- int linesize;
-
- if (!(data = av_mallocz(sizeof(*data) * planes)))
- goto fail;
-
- if (av_samples_alloc(data, &linesize, nb_channels, nb_samples, link->format, 0) < 0)
- goto fail;
+ AVFrame *frame = av_frame_alloc();
+ int channels = av_get_channel_layout_nb_channels(link->channel_layout);
+ int ret;
+
+ if (!frame)
+ return NULL;
+
+ frame->nb_samples = nb_samples;
+ frame->format = link->format;
+ frame->channel_layout = link->channel_layout;
+ frame->sample_rate = link->sample_rate;
+ ret = av_frame_get_buffer(frame, 0);
+ if (ret < 0) {
+ av_frame_free(&frame);
+ return NULL;
+ }
- samplesref = avfilter_get_audio_buffer_ref_from_arrays(data, linesize, perms,
- nb_samples, link->format,
- link->channel_layout);
- if (!samplesref)
- goto fail;
+ av_samples_set_silence(frame->extended_data, 0, nb_samples, channels,
+ link->format);
- av_freep(&data);
-fail:
- if (data)
- av_freep(&data[0]);
- av_freep(&data);
- return samplesref;
+ return frame;
}
-AVFilterBufferRef *ff_get_audio_buffer(AVFilterLink *link, int perms,
- int nb_samples)
+AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
{
- AVFilterBufferRef *ret = NULL;
+ AVFrame *ret = NULL;
if (link->dstpad->get_audio_buffer)
- ret = link->dstpad->get_audio_buffer(link, perms, nb_samples);
+ ret = link->dstpad->get_audio_buffer(link, nb_samples);
if (!ret)
- ret = ff_default_get_audio_buffer(link, perms, nb_samples);
-
- if (ret)
- ret->type = AVMEDIA_TYPE_AUDIO;
+ ret = ff_default_get_audio_buffer(link, nb_samples);
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;
- }
-
- samplesref->pts = AV_NOPTS_VALUE;
-
- 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;
-}
-
-static int default_filter_samples(AVFilterLink *link,
- AVFilterBufferRef *samplesref)
-{
- return ff_filter_samples(link->dst->outputs[0], samplesref);
-}
-
-int ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
-{
- int (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
- AVFilterPad *dst = link->dstpad;
- AVFilterBufferRef *buf_out;
-
- FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
-
- if (!(filter_samples = dst->filter_samples))
- filter_samples = default_filter_samples;
-
- /* prepare to copy the samples if the buffer has insufficient permissions */
- if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
- dst->rej_perms & samplesref->perms) {
- av_log(link->dst, AV_LOG_DEBUG,
- "Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
- samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
-
- buf_out = ff_default_get_audio_buffer(link, dst->min_perms,
- samplesref->audio->nb_samples);
- buf_out->pts = samplesref->pts;
- buf_out->audio->sample_rate = samplesref->audio->sample_rate;
-
- /* Copy actual data into new samples buffer */
- av_samples_copy(buf_out->extended_data, samplesref->extended_data,
- 0, 0, samplesref->audio->nb_samples,
- av_get_channel_layout_nb_channels(link->channel_layout),
- link->format);
-
- avfilter_unref_buffer(samplesref);
- } else
- buf_out = samplesref;
-
- return filter_samples(link, buf_out);
-}
-
projects / ffmpeg / blobdiff