30 #define DSS_HEAD_OFFSET_AUTHOR 0xc
31 #define DSS_AUTHOR_SIZE 16
33 #define DSS_HEAD_OFFSET_START_TIME 0x26
34 #define DSS_HEAD_OFFSET_END_TIME 0x32
35 #define DSS_TIME_SIZE 12
37 #define DSS_HEAD_OFFSET_ACODEC 0x2a4
38 #define DSS_ACODEC_DSS_SP 0x0
39 #define DSS_ACODEC_G723_1 0x2
41 #define DSS_HEAD_OFFSET_COMMENT 0x31e
42 #define DSS_COMMENT_SIZE 64
44 #define DSS_BLOCK_SIZE 512
45 #define DSS_AUDIO_BLOCK_HEADER_SIZE 6
46 #define DSS_FRAME_SIZE 42
75 int y, month, d,
h, minute, sec;
84 if (sscanf(
string,
"%2d%2d%2d%2d%2d%2d", &y, &month, &d, &h, &minute, &sec) != 6)
88 snprintf(datetime,
sizeof(datetime),
"%.4d-%.2d-%.2dT%.2d:%.2d:%.2d",
89 y + 2000, month, d, h, minute, sec);
94 unsigned int size,
const char *key)
202 for (i = 0; i < DSS_FRAME_SIZE - 2; i += 2)
220 int read_size, ret,
offset = 0, buff_offset = 0;
245 int size2 = ctx->
counter + read_size;
249 if (ret < size2 - offset)
258 if (ret < read_size - offset)
312 if (ret < size2 - offset) {
322 if (ret < size - offset) {
350 int64_t timestamp,
int flags)
358 seekto = timestamp / 264 * 41 / 506 * 512;
360 seekto = timestamp / 240 * ctx->
packet_size / 506 * 512;
372 ctx->
swap = !!(header[0] & 0x80);
373 offset = 2*header[1] + 2*ctx->
swap;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t pos
byte position in stream, -1 if unknown
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
AVInputFormat ff_dss_demuxer
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 bit_rate
Total stream bitrate in bit/s, 0 if not available.
#define DSS_AUDIO_BLOCK_HEADER_SIZE
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
static void dss_skip_audio_header(AVFormatContext *s, AVPacket *pkt)
Macro definitions for various function/variable attributes.
#define DSS_HEAD_OFFSET_AUTHOR
static int dss_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int dss_723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
static int dss_read_close(AVFormatContext *s)
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.
static int dss_read_header(AVFormatContext *s)
#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.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
AVDictionary * metadata
Metadata that applies to the whole file.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
enum AVMediaType codec_type
General type of the encoded data.
static int dss_sp_read_packet(AVFormatContext *s, AVPacket *pkt)
static const uint8_t offset[127][2]
static int dss_read_packet(AVFormatContext *s, AVPacket *pkt)
int avio_r8(AVIOContext *s)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
audio channel layout utility functions
#define DSS_HEAD_OFFSET_END_TIME
static int dss_probe(AVProbeData *p)
GLsizei GLboolean const GLfloat * value
static void dss_sp_byte_swap(DSSDemuxContext *ctx, uint8_t *dst, const uint8_t *src)
#define DSS_HEAD_OFFSET_COMMENT
static int dss_read_metadata_string(AVFormatContext *s, unsigned int offset, unsigned int size, const char *key)
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
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_WB16 unsigned int_TMPL byte
AVIOContext * pb
I/O context.
#define DSS_HEAD_OFFSET_ACODEC
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
static const uint8_t frame_size[4]
This structure contains the data a format has to probe a file.
int sample_rate
Audio only.
#define DSS_ACODEC_G723_1
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
#define DSS_ACODEC_DSS_SP
void * priv_data
Format private data.
static int dss_read_metadata_date(AVFormatContext *s, unsigned int offset, const char *key)
AVCodecParameters * codecpar
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.