diff options
Diffstat (limited to 'ffmpeg1/libavfilter/audio.c')
| -rw-r--r-- | ffmpeg1/libavfilter/audio.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/ffmpeg1/libavfilter/audio.c b/ffmpeg1/libavfilter/audio.c deleted file mode 100644 index 1075217..0000000 --- a/ffmpeg1/libavfilter/audio.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Copyright (c) Stefano Sabatini | stefasab at gmail.com - * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavutil/avassert.h" -#include "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "libavcodec/avcodec.h" - -#include "audio.h" -#include "avfilter.h" -#include "internal.h" - -int avfilter_ref_get_channels(AVFilterBufferRef *ref) -{ - return ref->audio ? ref->audio->channels : 0; -} - -AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples) -{ - return ff_get_audio_buffer(link->dst->outputs[0], nb_samples); -} - -AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples) -{ - AVFrame *frame = av_frame_alloc(); - int channels = link->channels; - int buf_size, ret; - - av_assert0(channels == av_get_channel_layout_nb_channels(link->channel_layout) || !av_get_channel_layout_nb_channels(link->channel_layout)); - - if (!frame) - return NULL; - - buf_size = av_samples_get_buffer_size(NULL, channels, nb_samples, - link->format, 0); - if (buf_size < 0) - goto fail; - - frame->buf[0] = av_buffer_alloc(buf_size); - if (!frame->buf[0]) - goto fail; - - frame->nb_samples = nb_samples; - ret = avcodec_fill_audio_frame(frame, channels, link->format, - frame->buf[0]->data, buf_size, 0); - if (ret < 0) - goto fail; - - av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, - link->format); - - frame->nb_samples = nb_samples; - frame->format = link->format; - av_frame_set_channels(frame, link->channels); - frame->channel_layout = link->channel_layout; - frame->sample_rate = link->sample_rate; - - return frame; - -fail: - av_buffer_unref(&frame->buf[0]); - av_frame_free(&frame); - return NULL; -} - -AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples) -{ - AVFrame *ret = NULL; - - if (link->dstpad->get_audio_buffer) - ret = link->dstpad->get_audio_buffer(link, nb_samples); - - if (!ret) - ret = ff_default_get_audio_buffer(link, nb_samples); - - return ret; -} - -#if FF_API_AVFILTERBUFFER -AVFilterBufferRef* avfilter_get_audio_buffer_ref_from_arrays_channels(uint8_t **data, - int linesize,int perms, - int nb_samples, - enum AVSampleFormat sample_fmt, - int channels, - uint64_t channel_layout) -{ - int planes; - AVFilterBuffer *samples = av_mallocz(sizeof(*samples)); - AVFilterBufferRef *samplesref = av_mallocz(sizeof(*samplesref)); - - if (!samples || !samplesref) - goto fail; - - av_assert0(channels); - av_assert0(channel_layout == 0 || - channels == av_get_channel_layout_nb_channels(channel_layout)); - - 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->channels = channels; - - planes = av_sample_fmt_is_planar(sample_fmt) ? channels : 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; -} - -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 channels = av_get_channel_layout_nb_channels(channel_layout); - return avfilter_get_audio_buffer_ref_from_arrays_channels(data, linesize, perms, - nb_samples, sample_fmt, - channels, channel_layout); -} -#endif |