mirror of
https://github.com/FFmpeg/FFmpeg.git
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1acd2f6ba7
Also remove it in once case when it is not needed. Signed-off-by: Paul B Mahol <onemda@gmail.com>
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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* Copyright (c) 2008 Vitor Sessak
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* Copyright (c) 2010 S.N. Hemanth Meenakshisundaram
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* Copyright (c) 2011 Mina Nagy Zaki
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/**
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* @file
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* memory buffer source filter
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*/
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#include "avfilter.h"
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#include "internal.h"
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#include "audio.h"
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#include "avcodec.h"
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#include "buffersrc.h"
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#include "asrc_abuffer.h"
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#include "libavutil/avstring.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/fifo.h"
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#include "libavutil/imgutils.h"
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typedef struct {
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AVFifoBuffer *fifo;
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AVRational time_base; ///< time_base to set in the output link
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int eof;
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unsigned nb_failed_requests;
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/* Video only */
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AVFilterContext *scale;
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int h, w;
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enum AVPixelFormat pix_fmt;
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AVRational sample_aspect_ratio;
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char sws_param[256];
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/* Audio only */
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// Audio format of incoming buffers
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int sample_rate;
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unsigned int sample_format;
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int64_t channel_layout;
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// Normalization filters
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AVFilterContext *aconvert;
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AVFilterContext *aresample;
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} BufferSourceContext;
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static void buf_free(AVFilterBuffer *ptr)
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{
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av_free(ptr);
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return;
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}
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int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx,
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AVFilterBufferRef *samplesref,
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int av_unused flags)
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{
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return av_buffersrc_add_ref(ctx, samplesref, AV_BUFFERSRC_FLAG_NO_COPY);
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}
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int av_asrc_buffer_add_samples(AVFilterContext *ctx,
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uint8_t *data[8], int linesize[8],
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int nb_samples, int sample_rate,
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int sample_fmt, int64_t channel_layout, int planar,
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int64_t pts, int av_unused flags)
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{
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AVFilterBufferRef *samplesref;
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samplesref = avfilter_get_audio_buffer_ref_from_arrays(
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data, linesize[0], AV_PERM_WRITE,
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nb_samples,
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sample_fmt, channel_layout);
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if (!samplesref)
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return AVERROR(ENOMEM);
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samplesref->buf->free = buf_free;
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samplesref->pts = pts;
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samplesref->audio->sample_rate = sample_rate;
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AV_NOWARN_DEPRECATED(
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return av_asrc_buffer_add_audio_buffer_ref(ctx, samplesref, 0);
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)
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}
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int av_asrc_buffer_add_buffer(AVFilterContext *ctx,
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uint8_t *buf, int buf_size, int sample_rate,
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int sample_fmt, int64_t channel_layout, int planar,
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int64_t pts, int av_unused flags)
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{
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uint8_t *data[8] = {0};
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int linesize[8];
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int nb_channels = av_get_channel_layout_nb_channels(channel_layout),
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nb_samples = buf_size / nb_channels / av_get_bytes_per_sample(sample_fmt);
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av_samples_fill_arrays(data, linesize,
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buf, nb_channels, nb_samples,
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sample_fmt, 16);
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AV_NOWARN_DEPRECATED(
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return av_asrc_buffer_add_samples(ctx,
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data, linesize, nb_samples,
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sample_rate,
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sample_fmt, channel_layout, planar,
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pts, flags);
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)
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}
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