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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
extern "C" {
#include <libavfilter/avfiltergraph.h>
}
#include "exceptions.h"
#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
typedef struct {
enum PixelFormat pix_fmt;
} AVSinkContext;
static int
avsink_init (AVFilterContext* ctx, const char* args, void* opaque)
{
AVSinkContext* priv = (AVSinkContext *) ctx->priv;
if (!opaque) {
return AVERROR (EINVAL);
}
*priv = *(AVSinkContext *) opaque;
return 0;
}
static void
null_end_frame (AVFilterLink *)
{
}
static int
avsink_query_formats (AVFilterContext* ctx)
{
AVSinkContext* priv = (AVSinkContext *) ctx->priv;
enum PixelFormat pix_fmts[] = {
priv->pix_fmt,
PIX_FMT_NONE
};
avfilter_set_common_formats (ctx, avfilter_make_format_list ((int *) pix_fmts));
return 0;
}
#endif
AVFilter*
get_sink ()
{
#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
/* XXX does this leak stuff? */
AVFilter* buffer_sink = new AVFilter;
buffer_sink->name = av_strdup ("avsink");
buffer_sink->priv_size = sizeof (AVSinkContext);
buffer_sink->init = avsink_init;
buffer_sink->query_formats = avsink_query_formats;
buffer_sink->inputs = new AVFilterPad[2];
AVFilterPad* i0 = const_cast<AVFilterPad*> (&buffer_sink->inputs[0]);
i0->name = "default";
i0->type = AVMEDIA_TYPE_VIDEO;
i0->min_perms = AV_PERM_READ;
i0->rej_perms = 0;
i0->start_frame = 0;
i0->get_video_buffer = 0;
i0->get_audio_buffer = 0;
i0->end_frame = null_end_frame;
i0->draw_slice = 0;
i0->filter_samples = 0;
i0->poll_frame = 0;
i0->request_frame = 0;
i0->config_props = 0;
const_cast<AVFilterPad*> (&buffer_sink->inputs[1])->name = 0;
buffer_sink->outputs = new AVFilterPad[1];
const_cast<AVFilterPad*> (&buffer_sink->outputs[0])->name = 0;
return buffer_sink;
#else
AVFilter* buffer_sink = avfilter_get_by_name("buffersink");
if (buffer_sink == 0) {
throw DecodeError ("Could not create buffer sink filter");
}
return buffer_sink;
#endif
}
#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
AVFilterInOut *
avfilter_inout_alloc ()
{
return (AVFilterInOut *) av_malloc (sizeof (AVFilterInOut));
}
#endif
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