2010-05-07 01:25:00 +00:00
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/*
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* Copyright (c) 2008 Vitor Sessak
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2012-04-27 17:19:45 +00:00
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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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2010-05-07 01:25:00 +00:00
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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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2010-07-20 16:23:18 +00:00
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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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2010-05-07 01:25:00 +00:00
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#include "avfilter.h"
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2011-08-22 12:56:23 +00:00
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#include "internal.h"
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2011-05-01 12:47:05 +00:00
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#include "avcodec.h"
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2011-12-21 19:39:18 +00:00
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#include "buffersrc.h"
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2010-05-07 01:25:00 +00:00
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#include "vsrc_buffer.h"
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2012-04-27 17:19:45 +00:00
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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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2012-03-29 09:22:40 +00:00
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#include "libavutil/fifo.h"
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2011-02-07 13:37:08 +00:00
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#include "libavutil/imgutils.h"
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2010-05-07 01:25:00 +00:00
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typedef struct {
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2012-03-29 09:22:40 +00:00
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AVFifoBuffer *fifo;
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2012-04-27 17:19:45 +00:00
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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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2010-06-17 22:33:42 +00:00
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int h, w;
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enum PixelFormat pix_fmt;
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2011-04-29 11:12:39 +00:00
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AVRational sample_aspect_ratio;
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2011-04-26 16:16:48 +00:00
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char sws_param[256];
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2012-04-27 17:19:45 +00:00
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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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int packing_format;
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// Normalization filters
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AVFilterContext *aconvert;
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AVFilterContext *aresample;
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2010-05-07 01:25:00 +00:00
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} BufferSourceContext;
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2012-04-27 17:19:45 +00:00
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#define FIFO_SIZE 8
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2012-01-03 10:18:00 +00:00
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#define CHECK_PARAM_CHANGE(s, c, width, height, format)\
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if (c->w != width || c->h != height || c->pix_fmt != format) {\
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av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\
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return AVERROR(EINVAL);\
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}
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2012-04-27 18:36:57 +00:00
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static int insert_filter(BufferSourceContext *abuffer,
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AVFilterLink *link, AVFilterContext **filt_ctx,
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const char *filt_name);
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static void remove_filter(AVFilterContext **filt_ctx);
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static int reconfigure_filter(BufferSourceContext *abuffer, AVFilterContext *filt_ctx);
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static inline void log_input_change(void *ctx, AVFilterLink *link, AVFilterBufferRef *ref)
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{
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char old_layout_str[16], new_layout_str[16];
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av_get_channel_layout_string(old_layout_str, sizeof(old_layout_str),
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-1, link->channel_layout);
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av_get_channel_layout_string(new_layout_str, sizeof(new_layout_str),
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-1, ref->audio->channel_layout);
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av_log(ctx, AV_LOG_INFO,
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"Audio input format changed: "
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"%s:%s:%d -> %s:%s:%d, normalizing\n",
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av_get_sample_fmt_name(link->format),
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old_layout_str, (int)link->sample_rate,
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av_get_sample_fmt_name(ref->format),
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new_layout_str, ref->audio->sample_rate);
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}
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2012-04-27 18:11:00 +00:00
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static int check_format_change_video(AVFilterContext *buffer_filter,
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AVFilterBufferRef *picref)
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2010-05-07 01:25:00 +00:00
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{
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BufferSourceContext *c = buffer_filter->priv;
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2011-03-09 14:13:59 +00:00
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int ret;
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2010-05-07 01:25:00 +00:00
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2011-05-07 19:35:08 +00:00
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if (picref->video->w != c->w || picref->video->h != c->h || picref->format != c->pix_fmt) {
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2011-05-13 16:07:51 +00:00
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AVFilterContext *scale = buffer_filter->outputs[0]->dst;
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2011-03-09 14:13:59 +00:00
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AVFilterLink *link;
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2011-05-18 23:02:54 +00:00
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char scale_param[1024];
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2011-03-09 14:13:59 +00:00
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2011-05-01 23:41:28 +00:00
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av_log(buffer_filter, AV_LOG_INFO,
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"Buffer video input changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
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c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name,
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2011-05-07 19:35:08 +00:00
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picref->video->w, picref->video->h, av_pix_fmt_descriptors[picref->format].name);
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2011-03-09 14:13:59 +00:00
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2011-05-13 16:07:51 +00:00
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if (!scale || strcmp(scale->filter->name, "scale")) {
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AVFilter *f = avfilter_get_by_name("scale");
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2011-03-09 14:13:59 +00:00
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av_log(buffer_filter, AV_LOG_INFO, "Inserting scaler filter\n");
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2011-05-13 16:09:47 +00:00
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if ((ret = avfilter_open(&scale, f, "Input equalizer")) < 0)
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return ret;
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2011-03-09 14:13:59 +00:00
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2012-03-31 06:49:18 +00:00
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c->scale = scale;
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2011-05-18 23:02:54 +00:00
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snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s", c->w, c->h, c->sws_param);
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if ((ret = avfilter_init_filter(scale, scale_param, NULL)) < 0) {
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2011-03-09 14:13:59 +00:00
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return ret;
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}
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2011-05-13 16:07:51 +00:00
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if ((ret = avfilter_insert_filter(buffer_filter->outputs[0], scale, 0, 0)) < 0) {
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2011-03-09 14:13:59 +00:00
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return ret;
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}
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2011-04-26 16:17:20 +00:00
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scale->outputs[0]->time_base = scale->inputs[0]->time_base;
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2011-03-09 14:13:59 +00:00
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scale->outputs[0]->format= c->pix_fmt;
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2011-05-13 16:07:51 +00:00
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} else if (!strcmp(scale->filter->name, "scale")) {
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2011-05-18 23:02:54 +00:00
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snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s",
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scale->outputs[0]->w, scale->outputs[0]->h, c->sws_param);
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scale->filter->init(scale, scale_param, NULL);
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2011-03-09 14:13:59 +00:00
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}
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2011-05-07 19:35:08 +00:00
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c->pix_fmt = scale->inputs[0]->format = picref->format;
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c->w = scale->inputs[0]->w = picref->video->w;
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c->h = scale->inputs[0]->h = picref->video->h;
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2011-03-09 14:13:59 +00:00
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2011-05-13 16:07:51 +00:00
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link = scale->outputs[0];
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2011-03-09 14:13:59 +00:00
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if ((ret = link->srcpad->config_props(link)) < 0)
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return ret;
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}
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2012-04-27 18:11:00 +00:00
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return 0;
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}
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2012-04-27 18:36:57 +00:00
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static int check_format_change_audio(AVFilterContext *ctx,
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AVFilterBufferRef *samplesref)
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{
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BufferSourceContext *abuffer = ctx->priv;
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AVFilterLink *link;
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int ret, logged = 0;
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link = ctx->outputs[0];
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if (samplesref->audio->sample_rate != link->sample_rate) {
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log_input_change(ctx, link, samplesref);
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logged = 1;
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abuffer->sample_rate = samplesref->audio->sample_rate;
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if (!abuffer->aresample) {
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ret = insert_filter(abuffer, link, &abuffer->aresample, "aresample");
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if (ret < 0) return ret;
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} else {
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link = abuffer->aresample->outputs[0];
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if (samplesref->audio->sample_rate == link->sample_rate)
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remove_filter(&abuffer->aresample);
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else
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if ((ret = reconfigure_filter(abuffer, abuffer->aresample)) < 0)
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return ret;
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}
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}
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link = ctx->outputs[0];
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if (samplesref->format != link->format ||
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samplesref->audio->channel_layout != link->channel_layout ||
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samplesref->audio->planar != link->planar) {
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if (!logged) log_input_change(ctx, link, samplesref);
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abuffer->sample_format = samplesref->format;
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abuffer->channel_layout = samplesref->audio->channel_layout;
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abuffer->packing_format = samplesref->audio->planar;
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if (!abuffer->aconvert) {
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ret = insert_filter(abuffer, link, &abuffer->aconvert, "aconvert");
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if (ret < 0) return ret;
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} else {
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link = abuffer->aconvert->outputs[0];
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if (samplesref->format == link->format &&
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samplesref->audio->channel_layout == link->channel_layout &&
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samplesref->audio->planar == link->planar
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)
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remove_filter(&abuffer->aconvert);
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else
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if ((ret = reconfigure_filter(abuffer, abuffer->aconvert)) < 0)
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return ret;
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}
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}
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return 0;
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}
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2012-04-27 18:11:00 +00:00
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static int check_format_change(AVFilterContext *buffer_filter,
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AVFilterBufferRef *picref)
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{
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switch (buffer_filter->outputs[0]->type) {
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case AVMEDIA_TYPE_VIDEO:
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return check_format_change_video(buffer_filter, picref);
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2012-04-27 18:36:57 +00:00
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case AVMEDIA_TYPE_AUDIO:
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return check_format_change_audio(buffer_filter, picref);
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2012-04-27 18:11:00 +00:00
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default:
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return AVERROR(ENOSYS);
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2012-04-27 18:02:52 +00:00
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}
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2012-04-27 18:11:00 +00:00
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}
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2011-03-09 14:13:59 +00:00
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2012-04-27 18:24:20 +00:00
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static AVFilterBufferRef *copy_buffer_ref(AVFilterContext *ctx,
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AVFilterBufferRef *ref)
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{
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AVFilterLink *outlink = ctx->outputs[0];
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AVFilterBufferRef *buf;
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switch (outlink->type) {
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case AVMEDIA_TYPE_VIDEO:
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buf = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
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ref->video->w, ref->video->h);
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av_image_copy(buf->data, buf->linesize,
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(void*)ref->data, ref->linesize,
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ref->format, ref->video->w, ref->video->h);
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break;
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default:
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return NULL;
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}
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avfilter_copy_buffer_ref_props(buf, ref);
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return buf;
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}
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2012-04-27 18:11:00 +00:00
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int av_buffersrc_add_ref(AVFilterContext *buffer_filter,
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AVFilterBufferRef *picref, int flags)
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{
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BufferSourceContext *c = buffer_filter->priv;
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AVFilterBufferRef *buf;
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int ret;
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if (!picref) {
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c->eof = 1;
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return 0;
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} else if (c->eof)
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return AVERROR(EINVAL);
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if (!av_fifo_space(c->fifo) &&
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(ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
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sizeof(buf))) < 0)
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return ret;
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if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) {
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ret = check_format_change(buffer_filter, picref);
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if (ret < 0)
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return ret;
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}
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2012-04-27 18:24:20 +00:00
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if (flags & AV_BUFFERSRC_FLAG_NO_COPY)
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2012-04-27 18:02:52 +00:00
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buf = picref;
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2012-04-27 18:24:20 +00:00
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else
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buf = copy_buffer_ref(buffer_filter, picref);
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2012-04-27 18:02:52 +00:00
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2012-03-29 09:22:40 +00:00
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if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0) {
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2012-04-27 18:02:52 +00:00
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if (buf != picref)
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avfilter_unref_buffer(buf);
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2012-03-29 09:22:40 +00:00
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return ret;
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}
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2012-04-19 14:31:20 +00:00
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c->nb_failed_requests = 0;
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2010-05-07 01:25:00 +00:00
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return 0;
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}
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2012-04-27 18:02:52 +00:00
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int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
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AVFilterBufferRef *picref, int flags)
|
2011-12-21 19:39:18 +00:00
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{
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2012-04-27 18:02:52 +00:00
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return av_buffersrc_add_ref(buffer_filter, picref, 0);
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}
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2010-05-07 01:25:00 +00:00
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2012-04-27 18:02:52 +00:00
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int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
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{
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return av_buffersrc_add_ref(s, buf, AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
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AV_BUFFERSRC_FLAG_NO_COPY);
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2010-05-07 01:25:00 +00:00
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}
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2011-05-18 23:17:16 +00:00
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#if CONFIG_AVCODEC
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#include "avcodec.h"
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|
2011-06-02 13:43:21 +00:00
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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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2011-05-18 23:17:16 +00:00
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{
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2012-04-14 19:49:01 +00:00
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BufferSourceContext *c = buffer_src->priv;
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AVFilterBufferRef *picref;
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2011-06-02 14:09:24 +00:00
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int ret;
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2012-04-14 19:49:01 +00:00
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if (!frame) {
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c->eof = 1;
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return 0;
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} else if (c->eof)
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return AVERROR(EINVAL);
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|
|
|
|
|
|
picref = avfilter_get_video_buffer_ref_from_frame(frame, AV_PERM_WRITE);
|
2011-05-18 23:17:16 +00:00
|
|
|
if (!picref)
|
|
|
|
return AVERROR(ENOMEM);
|
2011-06-02 13:43:21 +00:00
|
|
|
ret = av_vsrc_buffer_add_video_buffer_ref(buffer_src, picref, flags);
|
2011-05-18 23:17:16 +00:00
|
|
|
picref->buf->data[0] = NULL;
|
|
|
|
avfilter_unref_buffer(picref);
|
|
|
|
|
2011-06-02 14:09:24 +00:00
|
|
|
return ret;
|
2011-05-18 23:17:16 +00:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2012-04-19 14:31:20 +00:00
|
|
|
unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src)
|
|
|
|
{
|
|
|
|
return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
|
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static av_cold int init_video(AVFilterContext *ctx, const char *args, void *opaque)
|
2010-05-07 01:25:00 +00:00
|
|
|
{
|
|
|
|
BufferSourceContext *c = ctx->priv;
|
2010-07-21 17:14:19 +00:00
|
|
|
char pix_fmt_str[128];
|
2011-08-22 12:56:23 +00:00
|
|
|
int ret, n = 0;
|
2011-05-18 23:02:54 +00:00
|
|
|
*c->sws_param = 0;
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2010-10-12 18:40:20 +00:00
|
|
|
if (!args ||
|
2011-05-18 23:02:54 +00:00
|
|
|
(n = sscanf(args, "%d:%d:%127[^:]:%d:%d:%d:%d:%255c", &c->w, &c->h, pix_fmt_str,
|
2011-01-31 19:48:35 +00:00
|
|
|
&c->time_base.num, &c->time_base.den,
|
2011-05-18 23:02:54 +00:00
|
|
|
&c->sample_aspect_ratio.num, &c->sample_aspect_ratio.den, c->sws_param)) < 7) {
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Expected at least 7 arguments, but only %d found in '%s'\n", n, args);
|
2010-07-21 17:14:13 +00:00
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
2011-05-18 23:02:54 +00:00
|
|
|
|
2011-08-22 12:56:23 +00:00
|
|
|
if ((ret = ff_parse_pixel_format(&c->pix_fmt, pix_fmt_str, ctx)) < 0)
|
|
|
|
return ret;
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2012-03-29 09:22:40 +00:00
|
|
|
if (!(c->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*))))
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2011-05-18 23:02:54 +00:00
|
|
|
av_log(ctx, AV_LOG_INFO, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d sws_param:%s\n",
|
2011-05-07 10:44:18 +00:00
|
|
|
c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name,
|
|
|
|
c->time_base.num, c->time_base.den,
|
2011-05-18 23:02:54 +00:00
|
|
|
c->sample_aspect_ratio.num, c->sample_aspect_ratio.den, c->sws_param);
|
2010-07-21 17:14:13 +00:00
|
|
|
return 0;
|
2010-05-07 01:25:00 +00:00
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static av_cold int init_audio(AVFilterContext *ctx, const char *args0, void *opaque)
|
|
|
|
{
|
|
|
|
BufferSourceContext *abuffer = ctx->priv;
|
|
|
|
char *arg = NULL, *ptr, chlayout_str[16];
|
|
|
|
char *args = av_strdup(args0);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
arg = av_strtok(args, ":", &ptr);
|
|
|
|
|
|
|
|
#define ADD_FORMAT(fmt_name) \
|
|
|
|
if (!arg) \
|
|
|
|
goto arg_fail; \
|
|
|
|
if ((ret = ff_parse_##fmt_name(&abuffer->fmt_name, arg, ctx)) < 0) { \
|
|
|
|
av_freep(&args); \
|
|
|
|
return ret; \
|
|
|
|
} \
|
|
|
|
if (*args) \
|
|
|
|
arg = av_strtok(NULL, ":", &ptr)
|
|
|
|
|
|
|
|
ADD_FORMAT(sample_rate);
|
|
|
|
ADD_FORMAT(sample_format);
|
|
|
|
ADD_FORMAT(channel_layout);
|
|
|
|
ADD_FORMAT(packing_format);
|
|
|
|
|
|
|
|
abuffer->fifo = av_fifo_alloc(FIFO_SIZE*sizeof(AVFilterBufferRef*));
|
|
|
|
if (!abuffer->fifo) {
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Failed to allocate fifo, filter init failed.\n");
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str),
|
|
|
|
-1, abuffer->channel_layout);
|
|
|
|
av_log(ctx, AV_LOG_INFO, "format:%s layout:%s rate:%d\n",
|
|
|
|
av_get_sample_fmt_name(abuffer->sample_format), chlayout_str,
|
|
|
|
abuffer->sample_rate);
|
|
|
|
av_freep(&args);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
arg_fail:
|
|
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid arguments, must be of the form "
|
|
|
|
"sample_rate:sample_fmt:channel_layout:packing\n");
|
|
|
|
av_freep(&args);
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
|
|
|
|
2011-12-30 19:56:06 +00:00
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
|
|
{
|
|
|
|
BufferSourceContext *s = ctx->priv;
|
2012-04-17 01:19:57 +00:00
|
|
|
while (s->fifo && av_fifo_size(s->fifo)) {
|
2012-03-29 09:22:40 +00:00
|
|
|
AVFilterBufferRef *buf;
|
|
|
|
av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
|
|
|
|
avfilter_unref_buffer(buf);
|
|
|
|
}
|
|
|
|
av_fifo_free(s->fifo);
|
|
|
|
s->fifo = NULL;
|
2012-03-31 06:49:18 +00:00
|
|
|
avfilter_free(s->scale);
|
|
|
|
s->scale = NULL;
|
2011-12-30 19:56:06 +00:00
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static int query_formats_video(AVFilterContext *ctx)
|
2010-05-07 01:25:00 +00:00
|
|
|
{
|
|
|
|
BufferSourceContext *c = ctx->priv;
|
|
|
|
enum PixelFormat pix_fmts[] = { c->pix_fmt, PIX_FMT_NONE };
|
|
|
|
|
2011-06-19 18:31:24 +00:00
|
|
|
avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
|
2010-05-07 01:25:00 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static int query_formats_audio(AVFilterContext *ctx)
|
|
|
|
{
|
|
|
|
BufferSourceContext *abuffer = ctx->priv;
|
|
|
|
AVFilterFormats *formats;
|
|
|
|
|
|
|
|
formats = NULL;
|
|
|
|
avfilter_add_format(&formats, abuffer->sample_format);
|
|
|
|
avfilter_set_common_sample_formats(ctx, formats);
|
|
|
|
|
|
|
|
formats = NULL;
|
|
|
|
avfilter_add_format(&formats, abuffer->channel_layout);
|
|
|
|
avfilter_set_common_channel_layouts(ctx, formats);
|
|
|
|
|
|
|
|
formats = NULL;
|
|
|
|
avfilter_add_format(&formats, abuffer->packing_format);
|
|
|
|
avfilter_set_common_packing_formats(ctx, formats);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int config_output_video(AVFilterLink *link)
|
2010-05-07 01:25:00 +00:00
|
|
|
{
|
|
|
|
BufferSourceContext *c = link->src->priv;
|
|
|
|
|
|
|
|
link->w = c->w;
|
|
|
|
link->h = c->h;
|
2011-04-29 11:12:39 +00:00
|
|
|
link->sample_aspect_ratio = c->sample_aspect_ratio;
|
2010-10-12 18:40:20 +00:00
|
|
|
link->time_base = c->time_base;
|
2010-05-07 01:25:00 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static int config_output_audio(AVFilterLink *outlink)
|
|
|
|
{
|
|
|
|
BufferSourceContext *abuffer = outlink->src->priv;
|
|
|
|
outlink->sample_rate = abuffer->sample_rate;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-05-07 01:25:00 +00:00
|
|
|
static int request_frame(AVFilterLink *link)
|
|
|
|
{
|
|
|
|
BufferSourceContext *c = link->src->priv;
|
2012-03-29 09:22:40 +00:00
|
|
|
AVFilterBufferRef *buf;
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2012-03-29 09:22:40 +00:00
|
|
|
if (!av_fifo_size(c->fifo)) {
|
2012-04-01 16:53:58 +00:00
|
|
|
if (c->eof)
|
|
|
|
return AVERROR_EOF;
|
2012-04-19 14:31:20 +00:00
|
|
|
c->nb_failed_requests++;
|
2012-04-17 16:31:25 +00:00
|
|
|
return AVERROR(EAGAIN);
|
2010-05-07 01:25:00 +00:00
|
|
|
}
|
2012-03-29 09:22:40 +00:00
|
|
|
av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL);
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
switch (link->type) {
|
|
|
|
case AVMEDIA_TYPE_VIDEO:
|
2012-05-03 18:02:00 +00:00
|
|
|
avfilter_start_frame(link, avfilter_ref_buffer(buf, ~0));
|
|
|
|
avfilter_draw_slice(link, 0, link->h, 1);
|
|
|
|
avfilter_end_frame(link);
|
|
|
|
avfilter_unref_buffer(buf);
|
2012-04-27 17:19:45 +00:00
|
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
|
|
avfilter_filter_samples(link, avfilter_ref_buffer(buf, ~0));
|
2012-04-28 14:19:03 +00:00
|
|
|
avfilter_unref_buffer(buf);
|
2012-04-27 17:19:45 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return AVERROR(ENOSYS);
|
|
|
|
}
|
2010-05-07 01:25:00 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int poll_frame(AVFilterLink *link)
|
|
|
|
{
|
|
|
|
BufferSourceContext *c = link->src->priv;
|
2012-04-01 16:53:58 +00:00
|
|
|
int size = av_fifo_size(c->fifo);
|
|
|
|
if (!size && c->eof)
|
|
|
|
return AVERROR_EOF;
|
|
|
|
return size/sizeof(AVFilterBufferRef*);
|
2010-05-07 01:25:00 +00:00
|
|
|
}
|
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
static void buf_free(AVFilterBuffer *ptr)
|
|
|
|
{
|
|
|
|
av_free(ptr);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void set_link_source(AVFilterContext *src, AVFilterLink *link)
|
|
|
|
{
|
|
|
|
link->src = src;
|
|
|
|
link->srcpad = &(src->output_pads[0]);
|
|
|
|
src->outputs[0] = link;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int reconfigure_filter(BufferSourceContext *abuffer, AVFilterContext *filt_ctx)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
AVFilterLink * const inlink = filt_ctx->inputs[0];
|
|
|
|
AVFilterLink * const outlink = filt_ctx->outputs[0];
|
|
|
|
|
|
|
|
inlink->format = abuffer->sample_format;
|
|
|
|
inlink->channel_layout = abuffer->channel_layout;
|
|
|
|
inlink->planar = abuffer->packing_format;
|
|
|
|
inlink->sample_rate = abuffer->sample_rate;
|
|
|
|
|
|
|
|
filt_ctx->filter->uninit(filt_ctx);
|
|
|
|
memset(filt_ctx->priv, 0, filt_ctx->filter->priv_size);
|
|
|
|
if ((ret = filt_ctx->filter->init(filt_ctx, NULL , NULL)) < 0)
|
|
|
|
return ret;
|
|
|
|
if ((ret = inlink->srcpad->config_props(inlink)) < 0)
|
|
|
|
return ret;
|
|
|
|
return outlink->srcpad->config_props(outlink);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int insert_filter(BufferSourceContext *abuffer,
|
|
|
|
AVFilterLink *link, AVFilterContext **filt_ctx,
|
|
|
|
const char *filt_name)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if ((ret = avfilter_open(filt_ctx, avfilter_get_by_name(filt_name), NULL)) < 0)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
link->src->outputs[0] = NULL;
|
|
|
|
if ((ret = avfilter_link(link->src, 0, *filt_ctx, 0)) < 0) {
|
|
|
|
link->src->outputs[0] = link;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_link_source(*filt_ctx, link);
|
|
|
|
|
|
|
|
if ((ret = reconfigure_filter(abuffer, *filt_ctx)) < 0) {
|
|
|
|
avfilter_free(*filt_ctx);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void remove_filter(AVFilterContext **filt_ctx)
|
|
|
|
{
|
|
|
|
AVFilterLink *outlink = (*filt_ctx)->outputs[0];
|
|
|
|
AVFilterContext *src = (*filt_ctx)->inputs[0]->src;
|
|
|
|
|
|
|
|
(*filt_ctx)->outputs[0] = NULL;
|
|
|
|
avfilter_free(*filt_ctx);
|
|
|
|
*filt_ctx = NULL;
|
|
|
|
|
|
|
|
set_link_source(src, outlink);
|
|
|
|
}
|
|
|
|
|
|
|
|
int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx,
|
|
|
|
AVFilterBufferRef *samplesref,
|
|
|
|
int av_unused flags)
|
|
|
|
{
|
2012-04-27 22:16:20 +00:00
|
|
|
return av_buffersrc_add_ref(ctx, samplesref, AV_BUFFERSRC_FLAG_NO_COPY);
|
2012-04-27 17:19:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int av_asrc_buffer_add_samples(AVFilterContext *ctx,
|
|
|
|
uint8_t *data[8], int linesize[8],
|
|
|
|
int nb_samples, int sample_rate,
|
|
|
|
int sample_fmt, int64_t channel_layout, int planar,
|
|
|
|
int64_t pts, int av_unused flags)
|
|
|
|
{
|
|
|
|
AVFilterBufferRef *samplesref;
|
|
|
|
|
|
|
|
samplesref = avfilter_get_audio_buffer_ref_from_arrays(
|
|
|
|
data, linesize, AV_PERM_WRITE,
|
|
|
|
nb_samples,
|
|
|
|
sample_fmt, channel_layout, planar);
|
|
|
|
if (!samplesref)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
|
|
|
samplesref->buf->free = buf_free;
|
|
|
|
samplesref->pts = pts;
|
|
|
|
samplesref->audio->sample_rate = sample_rate;
|
|
|
|
|
|
|
|
return av_asrc_buffer_add_audio_buffer_ref(ctx, samplesref, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int av_asrc_buffer_add_buffer(AVFilterContext *ctx,
|
|
|
|
uint8_t *buf, int buf_size, int sample_rate,
|
|
|
|
int sample_fmt, int64_t channel_layout, int planar,
|
|
|
|
int64_t pts, int av_unused flags)
|
|
|
|
{
|
|
|
|
uint8_t *data[8] = {0};
|
|
|
|
int linesize[8];
|
|
|
|
int nb_channels = av_get_channel_layout_nb_channels(channel_layout),
|
|
|
|
nb_samples = buf_size / nb_channels / av_get_bytes_per_sample(sample_fmt);
|
|
|
|
|
|
|
|
av_samples_fill_arrays(data, linesize,
|
|
|
|
buf, nb_channels, nb_samples,
|
|
|
|
sample_fmt, 16);
|
|
|
|
|
|
|
|
return av_asrc_buffer_add_samples(ctx,
|
|
|
|
data, linesize, nb_samples,
|
|
|
|
sample_rate,
|
|
|
|
sample_fmt, channel_layout, planar,
|
|
|
|
pts, flags);
|
|
|
|
}
|
|
|
|
|
2010-07-20 16:23:25 +00:00
|
|
|
AVFilter avfilter_vsrc_buffer = {
|
2010-05-07 01:25:00 +00:00
|
|
|
.name = "buffer",
|
2010-07-21 17:14:08 +00:00
|
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
|
2010-05-07 01:25:00 +00:00
|
|
|
.priv_size = sizeof(BufferSourceContext),
|
2012-04-27 17:19:45 +00:00
|
|
|
.query_formats = query_formats_video,
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2012-04-27 17:19:45 +00:00
|
|
|
.init = init_video,
|
2011-12-30 19:56:06 +00:00
|
|
|
.uninit = uninit,
|
2010-05-07 01:25:00 +00:00
|
|
|
|
2011-11-05 13:39:24 +00:00
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = NULL }},
|
|
|
|
.outputs = (const AVFilterPad[]) {{ .name = "default",
|
2010-05-07 01:25:00 +00:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.request_frame = request_frame,
|
|
|
|
.poll_frame = poll_frame,
|
2012-04-27 17:19:45 +00:00
|
|
|
.config_props = config_output_video, },
|
2010-05-07 01:25:00 +00:00
|
|
|
{ .name = NULL}},
|
|
|
|
};
|
2012-04-27 17:19:45 +00:00
|
|
|
|
|
|
|
#ifdef CONFIG_ABUFFER_FILTER
|
|
|
|
|
|
|
|
AVFilter avfilter_asrc_abuffer = {
|
|
|
|
.name = "abuffer",
|
|
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
|
|
|
|
.priv_size = sizeof(BufferSourceContext),
|
|
|
|
.query_formats = query_formats_audio,
|
|
|
|
|
|
|
|
.init = init_audio,
|
|
|
|
.uninit = uninit,
|
|
|
|
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = NULL }},
|
|
|
|
.outputs = (const AVFilterPad[]) {{ .name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
|
|
.request_frame = request_frame,
|
|
|
|
.poll_frame = poll_frame,
|
|
|
|
.config_props = config_output_audio, },
|
|
|
|
{ .name = NULL}},
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif
|