57 0xd79e8283acea4620, 0x7a9762f445afd0d8,
58 0x354d60a60b8c79f1, 0x584e1cde00b07aee,
59 0x1573cd93da7df623, 0x47f98d79620dd535
98 av_log(s, level,
"%s: %s\n", name, buf);
106 if (!r_val && !n_val)
109 len =
FFMIN(len, 16);
113 if (r_val != oc->
r_val) {
114 memset(oc->
r_val, 0, 24);
115 memcpy(oc->
r_val, r_val, len);
117 memcpy(&oc->
r_val[16], r_val, 8);
120 if (n_val != oc->
n_val) {
121 memset(oc->
n_val, 0, 24);
122 memcpy(oc->
n_val, n_val, len);
124 memcpy(&oc->
n_val[16], n_val, 8);
130 #define OMA_RPROBE_M_VAL 48 + 1 139 if (!enc_header || !r_val ||
165 return memcmp(&enc_header[pos], oc->
sm_val, 8) ? -1 : 0;
173 uint32_t taglen, datalen;
176 if (!enc_header || !n_val ||
181 if (!memcmp(&enc_header[pos],
"EKB ", 4))
190 taglen =
AV_RB32(&enc_header[pos + 32]);
191 datalen =
AV_RB32(&enc_header[pos + 36]) >> 4;
193 pos += 44LL + taglen;
195 if (pos + (((uint64_t)datalen) << 4) > size)
203 while (datalen-- > 0) {
227 for (; em; em = em->
next) {
228 if (strcmp(em->
tag,
"GEOB"))
242 "Invalid GEOB data size: %"PRIu32
"\n", geob->
datasize);
261 OMA_ENC_HEADER_SIZE + 48 > geob->
datasize) {
265 oc->
rid =
AV_RB32(&gdata[OMA_ENC_HEADER_SIZE + 28]);
268 memcpy(oc->
iv, &header[0x58], 8);
286 kset(s, buf, buf, 16);
304 &gdata[OMA_ENC_HEADER_SIZE + 40], 1,
NULL, 0);
322 if (ret < packet_size)
341 if (ret == packet_size)
343 (packet_size >> 3), oc->
iv, 1);
345 memset(oc->
iv, 0, 8);
364 else if (tag !=
MKBETAG(0,
'B',
'L',
'K'))
373 if (ret < packet_size)
385 pkt->
pts = pts * 1024LL;
388 pkt->
pts = pts * 2048LL;
396 int ret, framesize, jsflag, samplerate;
397 uint32_t codec_params, channel_id;
417 if (memcmp(buf, ((
const uint8_t[]){
'E',
'A',
'3'}), 3) ||
428 if (eid != -1 && eid != -128 &&
decrypt_init(s, extra_meta, buf) < 0) {
435 codec_params =
AV_RB24(&buf[33]);
459 if (samplerate != 44100)
462 framesize = (codec_params & 0x3FF) * 8;
465 jsflag = (codec_params >> 17) & 1;
479 AV_WL32(&edata[2], samplerate);
488 channel_id = (codec_params >> 10) & 7;
491 "Invalid ATRAC-X channel id: %"PRIu32
"\n", channel_id);
497 framesize = ((codec_params & 0x3FF) * 8) + 8;
563 unsigned tag_len = 0;
582 int stream_index, int64_t timestamp,
int flags)
609 memset(oc->
iv, 0, 8);
623 .extensions =
"oma,omg,aa3",
static int oma_read_header(AVFormatContext *s)
static int rprobe(AVFormatContext *s, uint8_t *enc_header, unsigned size, const uint8_t *r_val)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void av_des_crypt(AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypts / decrypts using the DES algorithm.
static int aal_read_packet(AVFormatContext *s, AVPacket *pkt)
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
AVInputFormat ff_oma_demuxer
#define avpriv_request_sample(...)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
static int kset(AVFormatContext *s, const uint8_t *r_val, const uint8_t *n_val, int len)
static int oma_read_packet(AVFormatContext *s, AVPacket *pkt)
const AVCodecTag ff_oma_codec_tags[]
#define ID3v2_HEADER_SIZE
unsigned int avio_rb32(AVIOContext *s)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
enum AVStreamParseType need_parsing
GLsizei GLboolean const GLfloat * value
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
AVStream ** streams
A list of all streams in the file.
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Create chapters for all CHAP tags found in the ID3v2 header.
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
static const uint8_t header[24]
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
int(* read_packet)(AVFormatContext *s, AVPacket *pkt)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int av_des_init(AVDES *d, const uint8_t *key, int key_bits, av_unused int decrypt)
enum AVMediaType codec_type
General type of the encoded data.
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
int av_log_get_level(void)
Get the current log level.
int flags
A combination of AV_PKT_FLAG values.
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int block_align
Audio only.
audio channel layout utility functions
unsigned int avio_rb24(AVIOContext *s)
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
#define OMA_ENC_HEADER_SIZE
#define FF_ARRAY_ELEMS(a)
static int read_header(FFV1Context *f)
AVDES * av_des_alloc(void)
Allocate an AVDES context.
#define AV_LOG_INFO
Standard information.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
AVIOContext * pb
I/O context.
const uint64_t ff_oma_chid_to_native_layout[7]
map ATRAC-X channel id to internal channel layout
static void hex_log(AVFormatContext *s, int level, const char *name, const uint8_t *value, int len)
static int oma_read_probe(const AVProbeData *p)
void av_des_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count)
Calculates CBC-MAC using the DES algorithm.
static const uint64_t leaf_table[]
This structure contains the data a format has to probe a file.
static int oma_read_seek(struct AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
#define flags(name, subs,...)
int sample_rate
Audio only.
const int ff_oma_chid_to_num_channels[7]
map ATRAC-X channel id to total number of channels
int ff_id3v2_match(const uint8_t *buf, const char *magic)
Detect ID3v2 Header.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
Read an ID3v2 tag, including supported extra metadata.
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
#define MKBETAG(a, b, c, d)
static int nprobe(AVFormatContext *s, uint8_t *enc_header, unsigned size, const uint8_t *n_val)
int ff_id3v2_tag_len(const uint8_t *buf)
Get the length of an ID3v2 tag.
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int oma_read_close(AVFormatContext *s)
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
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
This structure stores compressed data.
const uint16_t ff_oma_srate_tab[8]
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...