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/* GStreamer
* Copyright (C) <2009> Edward Hervey <bilboed@bilboed.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_FFMPEG_UTILS_H__
#define __GST_FFMPEG_UTILS_H__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <libavcodec/avcodec.h>
#include <libavutil/mathematics.h>
#include <gst/gst.h>
/* Introduced since ffmpeg version 4.3
*
* Note: Not all ffmpeg encoders seem to be reusable after flushing/draining.
* So if ffmpeg encoder doesn't support it, we should reopen encoding session.
*
* Before ffmpeg 4.3, avcodec_flush_buffers() was implemented in
* libavcodec/decodec.c but it was moved to libavcodec/utils.c and it would be
* accepted if encoder supports AV_CODEC_CAP_ENCODER_FLUSH flag.
* That implies that avcodec_flush_buffers() wasn't intended to be working
* properly for encoders.
*/
#ifndef AV_CODEC_CAP_ENCODER_FLUSH
/*
* This encoder can be flushed using avcodec_flush_buffers(). If this flag is
* not set, the encoder must be closed and reopened to ensure that no frames
* remain pending.
*/
#define AV_CODEC_CAP_ENCODER_FLUSH (1 << 21)
#endif
/*
*Get the size of an picture
*/
int
gst_ffmpeg_avpicture_get_size (int pix_fmt, int width, int height);
/*
* Fill in pointers in an AVFrame, aligned by 4 (required by X).
*/
int
gst_ffmpeg_avpicture_fill (AVFrame * picture,
uint8_t * ptr,
enum AVPixelFormat pix_fmt,
int width,
int height);
/*
* Convert from/to a GStreamer <-> FFMpeg timestamp.
*/
static inline guint64
gst_ffmpeg_time_ff_to_gst (gint64 pts, AVRational base)
{
guint64 out;
if (pts == AV_NOPTS_VALUE){
out = GST_CLOCK_TIME_NONE;
} else {
AVRational bq = { 1, GST_SECOND };
out = av_rescale_q (pts, base, bq);
}
return out;
}
static inline gint64
gst_ffmpeg_time_gst_to_ff (guint64 time, AVRational base)
{
gint64 out;
if (!GST_CLOCK_TIME_IS_VALID (time) || base.num == 0) {
out = AV_NOPTS_VALUE;
} else {
AVRational bq = { 1, GST_SECOND };
out = av_rescale_q (time, bq, base);
}
return out;
}
void
gst_ffmpeg_init_pix_fmt_info(void);
int
gst_ffmpeg_auto_max_threads(void);
const gchar *
gst_ffmpeg_get_codecid_longname (enum AVCodecID codec_id);
gint
av_smp_format_depth(enum AVSampleFormat smp_fmt);
GstBuffer *
new_aligned_buffer (gint size);
#endif /* __GST_FFMPEG_UTILS_H__ */
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