FFmpeg
rsd.c
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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 
22 #include "libavcodec/bytestream.h"
23 #include "libavutil/intreadwrite.h"
24 #include "avformat.h"
25 #include "avio.h"
26 #include "internal.h"
27 
28 static const AVCodecTag rsd_tags[] = {
29  { AV_CODEC_ID_ADPCM_PSX, MKTAG('V','A','G',' ') },
30  { AV_CODEC_ID_ADPCM_THP_LE, MKTAG('G','A','D','P') },
31  { AV_CODEC_ID_ADPCM_THP, MKTAG('W','A','D','P') },
32  { AV_CODEC_ID_ADPCM_IMA_RAD, MKTAG('R','A','D','P') },
33  { AV_CODEC_ID_ADPCM_IMA_WAV, MKTAG('X','A','D','P') },
34  { AV_CODEC_ID_PCM_S16BE, MKTAG('P','C','M','B') },
35  { AV_CODEC_ID_PCM_S16LE, MKTAG('P','C','M',' ') },
36  { AV_CODEC_ID_XMA2, MKTAG('X','M','A',' ') },
37  { AV_CODEC_ID_NONE, 0 },
38 };
39 
40 static const uint32_t rsd_unsupported_tags[] = {
41  MKTAG('O','G','G',' '),
42 };
43 
44 static int rsd_probe(const AVProbeData *p)
45 {
46  if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6)
47  return 0;
48  if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8))
49  return AVPROBE_SCORE_MAX / 8;
50  if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16))
51  return AVPROBE_SCORE_MAX / 8;
52  return AVPROBE_SCORE_MAX;
53 }
54 
56 {
57  AVIOContext *pb = s->pb;
58  int i, ret, version, start = 0x800;
59  AVCodecParameters *par;
61 
62  if (!st)
63  return AVERROR(ENOMEM);
64 
65  avio_skip(pb, 3); // "RSD"
66  version = avio_r8(pb) - '0';
67 
68  par = st->codecpar;
70  par->codec_tag = avio_rl32(pb);
71  par->codec_id = ff_codec_get_id(rsd_tags, par->codec_tag);
72  if (!par->codec_id) {
73  const char *tag_buf = av_fourcc2str(par->codec_tag);
74  for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
75  if (par->codec_tag == rsd_unsupported_tags[i]) {
76  avpriv_request_sample(s, "Codec tag: %s", tag_buf);
77  return AVERROR_PATCHWELCOME;
78  }
79  }
80  av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
81  return AVERROR_INVALIDDATA;
82  }
83 
84  par->channels = avio_rl32(pb);
85  if (par->channels <= 0 || par->channels > INT_MAX / 36) {
86  av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", par->channels);
87  return AVERROR_INVALIDDATA;
88  }
89 
90  avio_skip(pb, 4); // Bit depth
91  par->sample_rate = avio_rl32(pb);
92  if (!par->sample_rate)
93  return AVERROR_INVALIDDATA;
94 
95  avio_skip(pb, 4); // Unknown
96 
97  switch (par->codec_id) {
98  case AV_CODEC_ID_XMA2:
99  par->block_align = 2048;
100  ff_alloc_extradata(par, 34);
101  if (!par->extradata)
102  return AVERROR(ENOMEM);
103  memset(par->extradata, 0, 34);
104  break;
106  par->block_align = 16 * par->channels;
107  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
108  st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
109  break;
111  par->block_align = 20 * par->channels;
112  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
113  st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
114  break;
116  if (version == 2)
117  start = avio_rl32(pb);
118 
119  par->bits_per_coded_sample = 4;
120  par->block_align = 36 * par->channels;
121  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
122  st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
123  break;
125  /* RSD3GADP is mono, so only alloc enough memory
126  to store the coeff table for a single channel. */
127 
128  start = avio_rl32(pb);
129 
130  if ((ret = ff_get_extradata(s, par, s->pb, 32)) < 0)
131  return ret;
132  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
133  st->duration = av_get_audio_frame_duration2(par, avio_size(pb) - start);
134  break;
136  par->block_align = 8 * par->channels;
137  avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
138 
139  if ((ret = ff_alloc_extradata(st->codecpar, 32 * par->channels)) < 0)
140  return ret;
141 
142  for (i = 0; i < par->channels; i++) {
143  avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
144  avio_skip(s->pb, 8);
145  }
146  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
147  st->duration = (avio_size(pb) - start) / (8 * par->channels) * 14;
148  break;
151  if (version != 4)
152  start = avio_rl32(pb);
153 
154  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
155  st->duration = (avio_size(pb) - start) / 2 / par->channels;
156  break;
157  }
158 
159  avio_skip(pb, start - avio_tell(pb));
160  if (par->codec_id == AV_CODEC_ID_XMA2) {
161  avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
162  st->duration = avio_rb32(pb);
163  }
164 
165  avpriv_set_pts_info(st, 64, 1, par->sample_rate);
166 
167  return 0;
168 }
169 
171 {
172  AVCodecParameters *par = s->streams[0]->codecpar;
173  int ret, size = 1024;
174  int64_t pos;
175 
176  if (avio_feof(s->pb))
177  return AVERROR_EOF;
178 
179  pos = avio_tell(s->pb);
180  if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD ||
183  par->codec_id == AV_CODEC_ID_XMA2) {
184  ret = av_get_packet(s->pb, pkt, par->block_align);
185  } else if (par->codec_tag == MKTAG('W','A','D','P') &&
186  par->channels > 1) {
187  int i, ch;
188 
189  ret = av_new_packet(pkt, par->block_align);
190  if (ret < 0)
191  return ret;
192  for (i = 0; i < 4; i++) {
193  for (ch = 0; ch < par->channels; ch++) {
194  pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb);
195  pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb);
196  }
197  }
198  ret = 0;
199  } else {
200  ret = av_get_packet(s->pb, pkt, size);
201  }
202 
203  if (par->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1)
204  pkt->duration = (pkt->data[0] >> 2) * 512;
205 
206  pkt->pos = pos;
207  pkt->stream_index = 0;
208 
209  return ret;
210 }
211 
213  .name = "rsd",
214  .long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"),
215  .read_probe = rsd_probe,
216  .read_header = rsd_read_header,
217  .read_packet = rsd_read_packet,
218  .extensions = "rsd",
219  .codec_tag = (const AVCodecTag* const []){rsd_tags, 0},
220  .flags = AVFMT_GENERIC_INDEX,
221 };
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:336
Buffered I/O operations.
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3124
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1497
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4882
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3953
int size
Definition: avcodec.h:1478
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63)))#define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};static void cpy1(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, len);}static void cpy2(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 2 *len);}static void cpy4(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 4 *len);}static void cpy8(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;}void swri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len){int ch;int off=0;const int os=(out->planar?1:out->ch_count)*out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){int planes=in->planar?in->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){int planes=out->planar?out->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){int planes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:331
int version
Definition: avisynth_c.h:858
static AVPacket pkt
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3945
Format I/O context.
Definition: avformat.h:1358
static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rsd.c:170
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)
Definition: aviobuf.c:801
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1495
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4455
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1426
uint8_t * data
Definition: avcodec.h:1477
#define AVERROR_EOF
End of file.
Definition: error.h:55
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:310
ptrdiff_t size
Definition: opengl_enc.c:100
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
static const AVCodecTag rsd_tags[]
Definition: rsd.c:28
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:648
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:260
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:770
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3949
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
This function is the same as av_get_audio_frame_duration(), except it works with AVCodecParameters in...
Definition: utils.c:1719
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:639
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
int block_align
Audio only.
Definition: avcodec.h:4070
static const uint32_t rsd_unsupported_tags[]
Definition: rsd.c:40
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3287
#define s(width, name)
Definition: cbs_vp9.c:257
static int rsd_read_header(AVFormatContext *s)
Definition: rsd.c:55
#define FF_ARRAY_ELEMS(a)
static int rsd_probe(const AVProbeData *p)
Definition: rsd.c:44
Stream structure.
Definition: avformat.h:881
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AVIOContext * pb
I/O context.
Definition: avformat.h:1400
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:468
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:930
int sample_rate
Audio only.
Definition: avcodec.h:4063
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:458
Main libavformat public API header.
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3305
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:3995
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3967
int channels
Audio only.
Definition: avcodec.h:4059
void INT64 start
Definition: avisynth_c.h:766
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:654
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1028
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:358
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3957
int stream_index
Definition: avcodec.h:1479
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
AVInputFormat ff_rsd_demuxer
Definition: rsd.c:212
#define MKTAG(a, b, c, d)
Definition: common.h:366
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1454