lavc: add a variant of av_get_audio_frame_duration working with AVCodecParameters
[libav.git] / libavformat / riff.h
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04d7f601 1/*
71e92414 2 * RIFF common functions and data
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3 * copyright (c) 2000 Fabrice Bellard
4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
04d7f601 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
7caf0cc6 22/**
ba87f080 23 * @file
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24 * internal header for RIFF based (de)muxers
25 * do NOT include this in end user applications
26 */
27
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28#ifndef AVFORMAT_RIFF_H
29#define AVFORMAT_RIFF_H
9d9f4119 30
245976da 31#include "libavcodec/avcodec.h"
99545457 32#include "avio.h"
80b39e1c 33#include "internal.h"
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34#include "metadata.h"
35
36extern const AVMetadataConv ff_riff_info_conv[];
99545457 37
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38int64_t ff_start_tag(AVIOContext *pb, const char *tag);
39void ff_end_tag(AVIOContext *pb, int64_t start);
9d9f4119 40
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41/**
42 * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
43 * bits_per_encoded_sample fields. Does not read extradata.
44 * @return codec tag
45 */
ae628ec1 46int ff_get_bmp_header(AVIOContext *pb, AVStream *st);
456a70ae 47
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48void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
49int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);
36ef5369 50enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
d80811c9 51int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int size);
9d9f4119 52
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53extern const AVCodecTag ff_codec_bmp_tags[];
54extern const AVCodecTag ff_codec_wav_tags[];
9d9f4119 55
d754ed41 56void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
9d9f4119 57
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58int ff_read_riff_info(AVFormatContext *s, int64_t size);
59
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60/**
61 * Write all recognized RIFF tags from s->metadata
62 */
63void ff_riff_write_info(AVFormatContext *s);
64
65/**
66 * Write a single RIFF info tag
67 */
68void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
69
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70typedef uint8_t ff_asf_guid[16];
71
72typedef struct AVCodecGuid {
73 enum AVCodecID id;
74 ff_asf_guid guid;
75} AVCodecGuid;
76
77extern const AVCodecGuid ff_codec_wav_guids[];
78
79#define FF_PRI_GUID \
80 "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
81
82#define FF_ARG_GUID(g) \
83 g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
84 g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
85
86#define FF_MEDIASUBTYPE_BASE_GUID \
87 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
88
89static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
90{
91 return memcmp(g1, g2, sizeof(ff_asf_guid));
92}
93
94static av_always_inline int ff_get_guid(AVIOContext *s, ff_asf_guid *g)
95{
96 return avio_read(s, *g, sizeof(*g));
97}
98
99enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
100
98790382 101#endif /* AVFORMAT_RIFF_H */