mirror of
https://github.com/FFmpeg/FFmpeg.git
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lavfi: move audio-related functions to a separate file.
This is easier to follow than having them randomly scattered in avfilter.c and defaults.c.
This commit is contained in:
Anton Khirnov
parent
472fb3bbfa
commit
0b45334a58
@ -10,6 +10,7 @@ HEADERS = avfilter.h \
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vsrc_buffer.h \
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OBJS = allfilters.o \
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audio.o \
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avfilter.o \
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avfiltergraph.o \
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buffersink.o \
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209
libavfilter/audio.c
Normal file
209
libavfilter/audio.c
Normal file
@ -0,0 +1,209 @@
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/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/audioconvert.h"
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#include "audio.h"
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#include "avfilter.h"
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#include "internal.h"
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AVFilterBufferRef *ff_null_get_audio_buffer(AVFilterLink *link, int perms,
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int nb_samples)
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{
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return ff_get_audio_buffer(link->dst->outputs[0], perms, nb_samples);
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}
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AVFilterBufferRef *ff_default_get_audio_buffer(AVFilterLink *link, int perms,
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int nb_samples)
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{
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AVFilterBufferRef *samplesref = NULL;
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uint8_t **data;
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int planar = av_sample_fmt_is_planar(link->format);
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int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout);
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int planes = planar ? nb_channels : 1;
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int linesize;
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if (!(data = av_mallocz(sizeof(*data) * planes)))
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goto fail;
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if (av_samples_alloc(data, &linesize, nb_channels, nb_samples, link->format, 0) < 0)
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goto fail;
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samplesref = avfilter_get_audio_buffer_ref_from_arrays(data, linesize, perms,
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nb_samples, link->format,
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link->channel_layout);
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if (!samplesref)
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goto fail;
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av_freep(&data);
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fail:
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if (data)
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av_freep(&data[0]);
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av_freep(&data);
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return samplesref;
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}
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AVFilterBufferRef *ff_get_audio_buffer(AVFilterLink *link, int perms,
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int nb_samples)
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{
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AVFilterBufferRef *ret = NULL;
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if (link->dstpad->get_audio_buffer)
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ret = link->dstpad->get_audio_buffer(link, perms, nb_samples);
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if (!ret)
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ret = ff_default_get_audio_buffer(link, perms, nb_samples);
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if (ret)
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ret->type = AVMEDIA_TYPE_AUDIO;
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return ret;
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}
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AVFilterBufferRef* avfilter_get_audio_buffer_ref_from_arrays(uint8_t **data,
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int linesize,int perms,
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int nb_samples,
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enum AVSampleFormat sample_fmt,
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uint64_t channel_layout)
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{
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int planes;
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AVFilterBuffer *samples = av_mallocz(sizeof(*samples));
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AVFilterBufferRef *samplesref = av_mallocz(sizeof(*samplesref));
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if (!samples || !samplesref)
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goto fail;
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samplesref->buf = samples;
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samplesref->buf->free = ff_avfilter_default_free_buffer;
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if (!(samplesref->audio = av_mallocz(sizeof(*samplesref->audio))))
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goto fail;
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samplesref->audio->nb_samples = nb_samples;
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samplesref->audio->channel_layout = channel_layout;
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samplesref->audio->planar = av_sample_fmt_is_planar(sample_fmt);
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planes = samplesref->audio->planar ? av_get_channel_layout_nb_channels(channel_layout) : 1;
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/* make sure the buffer gets read permission or it's useless for output */
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samplesref->perms = perms | AV_PERM_READ;
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samples->refcount = 1;
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samplesref->type = AVMEDIA_TYPE_AUDIO;
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samplesref->format = sample_fmt;
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memcpy(samples->data, data,
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FFMIN(FF_ARRAY_ELEMS(samples->data), planes)*sizeof(samples->data[0]));
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memcpy(samplesref->data, samples->data, sizeof(samples->data));
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samples->linesize[0] = samplesref->linesize[0] = linesize;
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if (planes > FF_ARRAY_ELEMS(samples->data)) {
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samples-> extended_data = av_mallocz(sizeof(*samples->extended_data) *
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planes);
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samplesref->extended_data = av_mallocz(sizeof(*samplesref->extended_data) *
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planes);
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if (!samples->extended_data || !samplesref->extended_data)
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goto fail;
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memcpy(samples-> extended_data, data, sizeof(*data)*planes);
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memcpy(samplesref->extended_data, data, sizeof(*data)*planes);
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} else {
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samples->extended_data = samples->data;
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samplesref->extended_data = samplesref->data;
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}
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return samplesref;
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fail:
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if (samples && samples->extended_data != samples->data)
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av_freep(&samples->extended_data);
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if (samplesref) {
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av_freep(&samplesref->audio);
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if (samplesref->extended_data != samplesref->data)
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av_freep(&samplesref->extended_data);
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}
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av_freep(&samplesref);
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av_freep(&samples);
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return NULL;
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}
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void ff_null_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
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{
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ff_filter_samples(link->dst->outputs[0], samplesref);
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}
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/* FIXME: samplesref is same as link->cur_buf. Need to consider removing the redundant parameter. */
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void ff_default_filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
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{
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AVFilterLink *outlink = NULL;
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if (inlink->dst->output_count)
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outlink = inlink->dst->outputs[0];
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if (outlink) {
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outlink->out_buf = ff_default_get_audio_buffer(inlink, AV_PERM_WRITE,
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samplesref->audio->nb_samples);
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outlink->out_buf->pts = samplesref->pts;
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outlink->out_buf->audio->sample_rate = samplesref->audio->sample_rate;
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ff_filter_samples(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
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avfilter_unref_buffer(outlink->out_buf);
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outlink->out_buf = NULL;
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}
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avfilter_unref_buffer(samplesref);
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inlink->cur_buf = NULL;
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}
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void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
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{
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void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
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AVFilterPad *dst = link->dstpad;
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FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
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if (!(filter_samples = dst->filter_samples))
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filter_samples = ff_default_filter_samples;
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/* prepare to copy the samples if the buffer has insufficient permissions */
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if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
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dst->rej_perms & samplesref->perms) {
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int i, planar = av_sample_fmt_is_planar(samplesref->format);
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int planes = !planar ? 1:
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av_get_channel_layout_nb_channels(samplesref->audio->channel_layout);
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av_log(link->dst, AV_LOG_DEBUG,
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"Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
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samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
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link->cur_buf = ff_default_get_audio_buffer(link, dst->min_perms,
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samplesref->audio->nb_samples);
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link->cur_buf->pts = samplesref->pts;
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link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate;
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/* Copy actual data into new samples buffer */
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for (i = 0; i < planes; i++)
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memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], samplesref->linesize[0]);
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avfilter_unref_buffer(samplesref);
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} else
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link->cur_buf = samplesref;
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filter_samples(link, link->cur_buf);
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}
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@ -27,7 +27,6 @@
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#include "libavutil/imgutils.h"
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#include "libavcodec/avcodec.h"
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#include "audio.h"
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#include "avfilter.h"
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#include "internal.h"
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@ -277,7 +276,7 @@ static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
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av_dlog(ctx, "]%s", end ? "\n" : "");
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}
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static void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
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void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
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{
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if (link->type == AVMEDIA_TYPE_VIDEO) {
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av_dlog(ctx,
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@ -301,8 +300,6 @@ static void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
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}
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}
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#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
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AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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{
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AVFilterBufferRef *ret = NULL;
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@ -368,91 +365,6 @@ fail:
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return NULL;
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}
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AVFilterBufferRef *ff_get_audio_buffer(AVFilterLink *link, int perms,
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int nb_samples)
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{
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AVFilterBufferRef *ret = NULL;
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if (link->dstpad->get_audio_buffer)
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ret = link->dstpad->get_audio_buffer(link, perms, nb_samples);
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if (!ret)
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ret = ff_default_get_audio_buffer(link, perms, nb_samples);
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if (ret)
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ret->type = AVMEDIA_TYPE_AUDIO;
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return ret;
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}
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AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays(uint8_t **data,
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int linesize, int perms,
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int nb_samples,
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enum AVSampleFormat sample_fmt,
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uint64_t channel_layout)
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{
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int planes;
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AVFilterBuffer *samples = av_mallocz(sizeof(*samples));
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AVFilterBufferRef *samplesref = av_mallocz(sizeof(*samplesref));
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if (!samples || !samplesref)
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goto fail;
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samplesref->buf = samples;
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samplesref->buf->free = ff_avfilter_default_free_buffer;
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if (!(samplesref->audio = av_mallocz(sizeof(*samplesref->audio))))
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goto fail;
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samplesref->audio->nb_samples = nb_samples;
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samplesref->audio->channel_layout = channel_layout;
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samplesref->audio->planar = av_sample_fmt_is_planar(sample_fmt);
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planes = samplesref->audio->planar ? av_get_channel_layout_nb_channels(channel_layout) : 1;
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/* make sure the buffer gets read permission or it's useless for output */
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samplesref->perms = perms | AV_PERM_READ;
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samples->refcount = 1;
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samplesref->type = AVMEDIA_TYPE_AUDIO;
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samplesref->format = sample_fmt;
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memcpy(samples->data, data,
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FFMIN(FF_ARRAY_ELEMS(samples->data), planes)*sizeof(samples->data[0]));
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memcpy(samplesref->data, samples->data, sizeof(samples->data));
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samples->linesize[0] = samplesref->linesize[0] = linesize;
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if (planes > FF_ARRAY_ELEMS(samples->data)) {
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samples-> extended_data = av_mallocz(sizeof(*samples->extended_data) *
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planes);
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samplesref->extended_data = av_mallocz(sizeof(*samplesref->extended_data) *
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planes);
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if (!samples->extended_data || !samplesref->extended_data)
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goto fail;
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memcpy(samples-> extended_data, data, sizeof(*data)*planes);
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memcpy(samplesref->extended_data, data, sizeof(*data)*planes);
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} else {
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samples->extended_data = samples->data;
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samplesref->extended_data = samplesref->data;
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}
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return samplesref;
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fail:
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if (samples && samples->extended_data != samples->data)
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av_freep(&samples->extended_data);
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if (samplesref) {
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av_freep(&samplesref->audio);
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if (samplesref->extended_data != samplesref->data)
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av_freep(&samplesref->extended_data);
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}
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av_freep(&samplesref);
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av_freep(&samples);
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return NULL;
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}
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int avfilter_request_frame(AVFilterLink *link)
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{
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FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
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@ -572,43 +484,6 @@ void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
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draw_slice(link, y, h, slice_dir);
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}
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void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
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{
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void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
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AVFilterPad *dst = link->dstpad;
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FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
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if (!(filter_samples = dst->filter_samples))
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filter_samples = ff_default_filter_samples;
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/* prepare to copy the samples if the buffer has insufficient permissions */
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if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
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dst->rej_perms & samplesref->perms) {
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int i, planar = av_sample_fmt_is_planar(samplesref->format);
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int planes = !planar ? 1:
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av_get_channel_layout_nb_channels(samplesref->audio->channel_layout);
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av_log(link->dst, AV_LOG_DEBUG,
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"Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
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samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
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link->cur_buf = ff_default_get_audio_buffer(link, dst->min_perms,
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samplesref->audio->nb_samples);
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link->cur_buf->pts = samplesref->pts;
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link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate;
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/* Copy actual data into new samples buffer */
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for (i = 0; i < planes; i++)
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memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], samplesref->linesize[0]);
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avfilter_unref_buffer(samplesref);
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} else
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link->cur_buf = samplesref;
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filter_samples(link, link->cur_buf);
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}
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#define MAX_REGISTERED_AVFILTERS_NB 64
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static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
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@ -23,7 +23,6 @@
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#include "libavutil/imgutils.h"
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#include "libavutil/samplefmt.h"
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#include "audio.h"
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#include "avfilter.h"
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#include "internal.h"
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@ -59,37 +58,6 @@ AVFilterBufferRef *avfilter_default_get_video_buffer(AVFilterLink *link, int per
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return picref;
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}
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AVFilterBufferRef *ff_default_get_audio_buffer(AVFilterLink *link, int perms,
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int nb_samples)
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{
|
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AVFilterBufferRef *samplesref = NULL;
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uint8_t **data;
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int planar = av_sample_fmt_is_planar(link->format);
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int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout);
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int planes = planar ? nb_channels : 1;
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int linesize;
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if (!(data = av_mallocz(sizeof(*data) * planes)))
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goto fail;
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if (av_samples_alloc(data, &linesize, nb_channels, nb_samples, link->format, 0) < 0)
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goto fail;
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samplesref = avfilter_get_audio_buffer_ref_from_arrays(data, linesize, perms,
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nb_samples, link->format,
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link->channel_layout);
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if (!samplesref)
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goto fail;
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av_freep(&data);
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fail:
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if (data)
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av_freep(&data[0]);
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av_freep(&data);
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return samplesref;
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}
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void avfilter_default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
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{
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AVFilterLink *outlink = NULL;
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@ -134,27 +102,6 @@ void avfilter_default_end_frame(AVFilterLink *inlink)
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}
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}
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/* FIXME: samplesref is same as link->cur_buf. Need to consider removing the redundant parameter. */
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void ff_default_filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
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{
|
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AVFilterLink *outlink = NULL;
|
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|
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if (inlink->dst->output_count)
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outlink = inlink->dst->outputs[0];
|
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|
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if (outlink) {
|
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outlink->out_buf = ff_default_get_audio_buffer(inlink, AV_PERM_WRITE,
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samplesref->audio->nb_samples);
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outlink->out_buf->pts = samplesref->pts;
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outlink->out_buf->audio->sample_rate = samplesref->audio->sample_rate;
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ff_filter_samples(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
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avfilter_unref_buffer(outlink->out_buf);
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outlink->out_buf = NULL;
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}
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avfilter_unref_buffer(samplesref);
|
||||
inlink->cur_buf = NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* default config_link() implementation for output video links to simplify
|
||||
* the implementation of one input one output video filters */
|
||||
@ -235,18 +182,7 @@ void avfilter_null_end_frame(AVFilterLink *link)
|
||||
avfilter_end_frame(link->dst->outputs[0]);
|
||||
}
|
||||
|
||||
void ff_null_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
|
||||
{
|
||||
ff_filter_samples(link->dst->outputs[0], samplesref);
|
||||
}
|
||||
|
||||
AVFilterBufferRef *avfilter_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
|
||||
{
|
||||
return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
|
||||
}
|
||||
|
||||
AVFilterBufferRef *ff_null_get_audio_buffer(AVFilterLink *link, int perms,
|
||||
int nb_samples)
|
||||
{
|
||||
return ff_get_audio_buffer(link->dst->outputs[0], perms, nb_samples);
|
||||
}
|
||||
|
||||
@ -55,4 +55,8 @@ void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
|
||||
/** Tell is a format is contained in the provided list terminated by -1. */
|
||||
int ff_fmt_is_in(int fmt, const int *fmts);
|
||||
|
||||
#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
|
||||
|
||||
void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
|
||||
|
||||
#endif /* AVFILTER_INTERNAL_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user