mirror of
https://github.com/FFmpeg/FFmpeg.git
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aa1246ea42
Most of the code is moved to buffersrc.c to help Git see the similarities. src_buffer.c still contains the obsolete compatibility functions. The format change detection code was removed as it has been implemented directly in ffmpeg. It can easily be brought back from the history.
144 lines
4.5 KiB
C
144 lines
4.5 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 "vsrc_buffer.h"
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#include "asrc_abuffer.h"
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#include "libavutil/audioconvert.h"
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#include "libavutil/avstring.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 PixelFormat 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_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
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AVFilterBufferRef *picref, int flags)
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{
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return av_buffersrc_add_ref(buffer_filter, picref, 0);
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}
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#if CONFIG_AVCODEC
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#include "avcodec.h"
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int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src,
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const AVFrame *frame, int flags)
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{
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return av_buffersrc_add_frame(buffer_src, frame, 0);
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}
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#endif
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unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src)
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{
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return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
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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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