adx parser: set duration
[libav.git] / libavcodec / internal.h
CommitLineData
dbbec0c2 1/*
2912e87a 2 * This file is part of Libav.
dbbec0c2 3 *
2912e87a 4 * Libav is free software; you can redistribute it and/or
dbbec0c2
SS
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
2912e87a 9 * Libav is distributed in the hope that it will be useful,
dbbec0c2
SS
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
2912e87a 15 * License along with Libav; if not, write to the Free Software
dbbec0c2
SS
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19/**
ba87f080 20 * @file
dbbec0c2
SS
21 * common internal api header.
22 */
23
24#ifndef AVCODEC_INTERNAL_H
25#define AVCODEC_INTERNAL_H
26
a05aa821 27#include <stdint.h>
f3a29b75
JR
28
29#include "libavutil/pixfmt.h"
a05aa821
MN
30#include "avcodec.h"
31
f3a29b75 32typedef struct InternalBuffer {
0eea2129
JR
33 uint8_t *base[AV_NUM_DATA_POINTERS];
34 uint8_t *data[AV_NUM_DATA_POINTERS];
35 int linesize[AV_NUM_DATA_POINTERS];
f3a29b75
JR
36 int width;
37 int height;
38 enum PixelFormat pix_fmt;
0eea2129
JR
39 uint8_t **extended_data;
40 int audio_data_size;
41 int nb_channels;
f3a29b75
JR
42} InternalBuffer;
43
44typedef struct AVCodecInternal {
45 /**
46 * internal buffer count
47 * used by default get/release/reget_buffer().
48 */
49 int buffer_count;
50
51 /**
52 * internal buffers
53 * used by default get/release/reget_buffer().
54 */
55 InternalBuffer *buffer;
56
57 /**
58 * Whether the parent AVCodecContext is a copy of the context which had
59 * init() called on it.
60 * This is used by multithreading - shared tables and picture pointers
61 * should be freed from the original context only.
62 */
63 int is_copy;
b2c75b6e
JR
64
65#if FF_API_OLD_DECODE_AUDIO
66 /**
67 * Internal sample count used by avcodec_encode_audio() to fabricate pts.
68 * Can be removed along with avcodec_encode_audio().
69 */
70 int sample_count;
71#endif
f3a29b75
JR
72} AVCodecInternal;
73
84626b36
AK
74struct AVCodecDefault {
75 const uint8_t *key;
76 const uint8_t *value;
77};
78
dbbec0c2 79/**
49bd8e4b 80 * Determine whether pix_fmt is a hardware accelerated format.
d7dae42e
GB
81 */
82int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt);
83
84/**
49bd8e4b 85 * Return the hardware accelerated codec for codec codec_id and
bf7e799c 86 * pixel format pix_fmt.
a05aa821
MN
87 *
88 * @param codec_id the codec to match
89 * @param pix_fmt the pixel format to match
90 * @return the hardware accelerated codec, or NULL if none was found.
91 */
92AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt);
93
9e2e8214
MN
94/**
95 * Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
96 * If there is no such matching pair then size is returned.
97 */
6c060b55
MN
98int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);
99
0842d589 100unsigned int avpriv_toupper4(unsigned int x);
603a5f04 101
2d1b6fb7
MS
102int avpriv_lock_avformat(void);
103int avpriv_unlock_avformat(void);
104
4df30f71
AC
105/**
106 * Maximum size in bytes of extradata.
107 * This value was chosen such that every bit of the buffer is
108 * addressable by a 32-bit signed integer as used by get_bits.
109 */
110#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE)
111
b2c75b6e
JR
112/**
113 * Check AVPacket size and/or allocate data.
114 *
115 * Encoders supporting AVCodec.encode2() can use this as a convenience to
116 * ensure the output packet data is large enough, whether provided by the user
117 * or allocated in this function.
118 *
119 * @param avpkt the AVPacket
120 * If avpkt->data is already set, avpkt->size is checked
121 * to ensure it is large enough.
122 * If avpkt->data is NULL, a new buffer is allocated.
1a670973 123 * avpkt->size is set to the specified size.
b2c75b6e
JR
124 * All other AVPacket fields will be reset with av_init_packet().
125 * @param size the minimum required packet size
126 * @return 0 on success, negative error code on failure
127 */
128int ff_alloc_packet(AVPacket *avpkt, int size);
129
dbbec0c2 130#endif /* AVCODEC_INTERNAL_H */