32 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
33 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D')
34 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C')
35 #define SEND_TAG MKTAG('S', 'E', 'N', 'D')
36 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N')
37 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N')
38 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N')
39 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h')
40 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
41 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd')
42 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e')
43 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
44 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
45 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
46 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
47 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T')
48 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T')
49 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D')
50 #define MADk_TAG MKTAG('M', 'A', 'D', 'k')
51 #define MADm_TAG MKTAG('M', 'A', 'D', 'm')
52 #define MADe_TAG MKTAG('M', 'A', 'D', 'e')
53 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h')
54 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's')
55 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T')
56 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T')
57 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
58 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
59 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
60 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h')
61 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f')
88 for (i = 0; i <
size; i++) {
106 int compression_type = -1, revision = -1, revision2 = -1;
136 av_log (s,
AV_LOG_DEBUG,
"compression_type (element 0x83) set to 0x%08x\n", compression_type);
176 switch (compression_type) {
201 av_log(s,
AV_LOG_ERROR,
"unsupported stream type; compression_type=%i\n", compression_type);
219 int compression_type;
224 compression_type =
avio_r8(pb);
227 switch (compression_type) {
237 av_log (s,
AV_LOG_ERROR,
"unsupported stream type; audio compression_type=%i\n", compression_type);
304 uint32_t blockid,
size = 0;
334 }
else if ((blockid & 0xFFFF)!=
PT00_TAG) {
385 avio_seek(pb, startpos + size, SEEK_SET);
435 #if FF_API_R_FRAME_RATE
444 "Unsupported number of channels: %d\n", ea->
num_channels);
453 if (ea->
bytes <= 0) {
487 unsigned int chunk_type, chunk_size;
491 while (!packet_read) {
498 switch (chunk_type) {
576 goto get_video_packet;
581 goto get_video_packet;
static int process_ea_header(AVFormatContext *s)
static int process_audio_header_eacs(AVFormatContext *s)
void av_free_packet(AVPacket *pkt)
Free a packet.
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
enum AVCodecID audio_codec
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
enum AVCodecID video_codec
unsigned int avio_rb32(AVIOContext *s)
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).
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVCodecID
Identify the syntax and semantics of the bitstream.
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
preferred ID for decoding MPEG audio layer 1, 2 or 3
void av_log(void *avcl, int level, const char *fmt,...)
AVStream * avformat_new_stream(AVFormatContext *s, AVCodec *c)
Add a new stream to a media file.
static int process_video_header_vp6(AVFormatContext *s)
AVRational avg_frame_rate
Average framerate.
int flags
A combination of AV_PKT_FLAG values.
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.
struct AVRational AVRational
rational number numerator/denominator
int bit_rate
the average bitrate
struct EaDemuxContext EaDemuxContext
static int process_audio_header_elements(AVFormatContext *s)
int width
picture width / height.
static int ea_read_header(AVFormatContext *s)
static av_always_inline int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
preferred ID for MPEG-1/2 video decoding
static int read_header(FFV1Context *f)
enum AVMediaType codec_type
int sample_rate
samples per second
AVIOContext * pb
I/O context.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
static int process_video_header_mdec(AVFormatContext *s)
rational number numerator/denominator
static int process_video_header_cmv(AVFormatContext *s)
static int process_audio_header_sead(AVFormatContext *s)
This structure contains the data a format has to probe a file.
static int ea_probe(AVProbeData *p)
unsigned int avio_rl16(AVIOContext *s)
int64_t start_time
Decoding: pts of the first frame of the stream, in stream time base.
#define AVERROR_INVALIDDATA
#define AVPROBE_SCORE_MAX
int eof_reached
true if eof reached
int channels
number of audio channels
void * priv_data
Format private data.
static uint32_t read_arbitary(AVIOContext *pb)
static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
AVInputFormat ff_ea_demuxer
This structure stores compressed data.