1 /*
2 * RSD demuxer
3 * Copyright (c) 2013 James Almer
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
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
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
27
38 };
39
41 MKTAG(
'O',
'G',
'G',
' '),
42 };
43
45 {
46 if (memcmp(p->
buf,
"RSD", 3) || p->
buf[3] -
'0' < 2 || p->
buf[3] -
'0' > 6)
47 return 0;
53 }
54
56 {
61
62 if (!st)
64
67
73 char tag_buf[32];
74
80 }
81 }
84 }
85
89
94
96
104 break;
109 break;
114 break;
116 if (version == 2)
118
123 break;
125 /* RSD3GADP is mono, so only alloc enough memory
126 to store the coeff table for a single channel. */
127
129
131 return ret;
134 break;
138
140 return ret;
141
145 }
148 break;
151 if (version != 4)
153
156 break;
157 }
158
163 }
164
166
167 return 0;
168 }
169
171 {
173 int ret,
size = 1024;
174 int64_t pos;
175
178
187 int i, ch;
188
190 if (ret < 0)
191 return ret;
192 for (i = 0; i < 4; i++) {
193 for (ch = 0; ch < codec->
channels; ch++) {
196 }
197 }
198 ret = 0;
199 } else {
201 }
202
205
208
209 return ret;
210 }
211
218 .extensions = "rsd",
221 };
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t avio_size(AVIOContext *s)
Get the filesize.
int64_t pos
byte position in stream, -1 if unknown
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
Put a string representing the codec tag codec_tag in buf.
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
unsigned int avio_rb32(AVIOContext *s)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
static int rsd_probe(AVProbeData *p)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
#define AVERROR_EOF
End of file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
static const AVCodecTag rsd_tags[]
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int avio_r8(AVIOContext *s)
AVCodecContext * codec
Codec context associated with this stream.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static const uint32_t rsd_unsupported_tags[]
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
static int rsd_read_header(AVFormatContext *s)
#define FF_ARRAY_ELEMS(a)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
enum AVMediaType codec_type
int sample_rate
samples per second
AVIOContext * pb
I/O context.
main external API structure.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
This structure contains the data a format has to probe a file.
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
int64_t duration
Decoding: duration of the stream, in stream time base.
int channels
number of audio channels
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
AVInputFormat ff_rsd_demuxer
#define MKTAG(a, b, c, d)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.