X-Git-Url: http://git.videolan.org/?p=ffmpeg.git;a=blobdiff_plain;f=libavfilter%2Faudio.c;h=5fe9da95c3c0e5174369748064a99eded35e2bab;hp=48e038b842407c7ce37ecd032a311d1ffe702640;hb=f6974fe651d29ef6eb68d66d73f7b6c011062aa0;hpb=a903f8f087b0bdcc5643054147f3a5f278e7eb99 diff --git a/libavfilter/audio.c b/libavfilter/audio.c index 48e038b842..5fe9da95c3 100644 --- a/libavfilter/audio.c +++ b/libavfilter/audio.c @@ -23,173 +23,46 @@ #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); - if (!buf_out) { - avfilter_unref_buffer(samplesref); - return AVERROR(ENOMEM); - } - 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); -} -