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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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57e66c5a22
Add a new function new_aligned_buffer() which creates a GstBuffer of the requested size/caps, with the memory being allocated/freed by ffmpeg's av_malloc/av_free which guarantees properly aligned memory. Added a can_allocate_aligned internal property which we use to figure out whether downstream can provide us with 128bit aligned buffers.
93 lines
2.3 KiB
C
93 lines
2.3 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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_FFMPEG_UNINSTALLED
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#include <avcodec.h>
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#else
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#include <libavcodec/avcodec.h>
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#endif
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#include <gst/gst.h>
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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 AVPicture, aligned by 4 (required by X).
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*/
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int
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gst_ffmpeg_avpicture_fill (AVPicture * picture,
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uint8_t * ptr,
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enum PixelFormat 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();
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G_CONST_RETURN gchar *
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gst_ffmpeg_get_codecid_longname (enum CodecID codec_id);
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gint
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av_smp_format_depth(enum SampleFormat smp_fmt);
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GstBuffer *
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new_aligned_buffer (gint size, GstCaps * caps);
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#endif /* __GST_FFMPEG_UTILS_H__ */
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