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