1 /* GStreamer
2 * Copyright (C) <2009> Edward Hervey <bilboed@bilboed.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifndef __GST_FFMPEG_UTILS_H__
21 #define __GST_FFMPEG_UTILS_H__
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include <libavcodec/avcodec.h>
28 #include <libavutil/mathematics.h>
29
30 #include <gst/gst.h>
31
32 /*
33 *Get the size of an picture
34 */
35 int
36 gst_ffmpeg_avpicture_get_size (int pix_fmt, int width, int height);
37
38 /*
39 * Fill in pointers in an AVFrame, aligned by 4 (required by X).
40 */
41
42 int
43 gst_ffmpeg_avpicture_fill (AVFrame * picture,
44 uint8_t * ptr,
45 enum AVPixelFormat pix_fmt,
46 int width,
47 int height);
48
49 /*
50 * Convert from/to a GStreamer <-> FFMpeg timestamp.
51 */
52 static inline guint64
gst_ffmpeg_time_ff_to_gst(gint64 pts,AVRational base)53 gst_ffmpeg_time_ff_to_gst (gint64 pts, AVRational base)
54 {
55 guint64 out;
56
57 if (pts == AV_NOPTS_VALUE){
58 out = GST_CLOCK_TIME_NONE;
59 } else {
60 AVRational bq = { 1, GST_SECOND };
61 out = av_rescale_q (pts, base, bq);
62 }
63
64 return out;
65 }
66
67 static inline gint64
gst_ffmpeg_time_gst_to_ff(guint64 time,AVRational base)68 gst_ffmpeg_time_gst_to_ff (guint64 time, AVRational base)
69 {
70 gint64 out;
71
72 if (!GST_CLOCK_TIME_IS_VALID (time) || base.num == 0) {
73 out = AV_NOPTS_VALUE;
74 } else {
75 AVRational bq = { 1, GST_SECOND };
76 out = av_rescale_q (time, bq, base);
77 }
78
79 return out;
80 }
81
82 void
83 gst_ffmpeg_init_pix_fmt_info(void);
84
85 int
86 gst_ffmpeg_auto_max_threads(void);
87
88 const gchar *
89 gst_ffmpeg_get_codecid_longname (enum AVCodecID codec_id);
90
91 gint
92 av_smp_format_depth(enum AVSampleFormat smp_fmt);
93
94 GstBuffer *
95 new_aligned_buffer (gint size);
96
97 #endif /* __GST_FFMPEG_UTILS_H__ */
98