34 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
35 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D')
36 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C')
37 #define SEND_TAG MKTAG('S', 'E', 'N', 'D')
38 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N')
39 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N')
40 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N')
41 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h')
42 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
43 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd')
44 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e')
45 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
46 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
47 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
48 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
49 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T')
50 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T')
51 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D')
52 #define MADk_TAG MKTAG('M', 'A', 'D', 'k')
53 #define MADm_TAG MKTAG('M', 'A', 'D', 'm')
54 #define MADe_TAG MKTAG('M', 'A', 'D', 'e')
55 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h')
56 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's')
57 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T')
58 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T')
59 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
60 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
61 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
62 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h')
63 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f')
91 for (i = 0; i <
size; i++) {
105 int compression_type = -1, revision = -1, revision2 = -1;
128 "revision (element 0x80) set to 0x%08x\n", revision);
133 "num_channels (element 0x82) set to 0x%08x\n",
139 "compression_type (element 0x83) set to 0x%08x\n",
145 "sample_rate (element 0x84) set to %i\n",
151 "num_samples (element 0x85) set to 0x%08x\n",
156 "element 0x%02x set to 0x%08"PRIx32
"\n",
164 "revision2 (element 0xA0) set to 0x%08x\n",
169 "end of header block reached (within audio subheader)\n");
175 "element 0x%02x set to 0x%08"PRIx32
"\n",
187 "header element 0x%02x set to 0x%08"PRIx32
"\n",
193 switch (compression_type) {
215 "unsupported stream type; revision=%i\n", revision);
233 "unsupported stream type; revision2=%i\n", revision2);
239 "unsupported stream type; compression_type=%i\n",
254 int compression_type;
259 compression_type =
avio_r8(pb);
262 switch (compression_type) {
282 "unsupported stream type; audio compression_type=%i\n",
336 uint32_t blockid,
size = 0;
366 }
else if ((blockid & 0xFFFF) !=
PT00_TAG) {
417 avio_seek(pb, startpos + size, SEEK_SET);
474 "Unsupported number of channels: %d\n", ea->
num_channels);
484 if (ea->
bytes <= 0) {
486 "Invalid number of bytes per sample: %d\n", ea->
bytes);
518 unsigned int chunk_type, chunk_size;
519 int ret = 0, packet_read = 0, key = 0;
522 while (!packet_read) {
529 switch (chunk_type) {
610 goto get_video_packet;
618 goto get_video_packet;
static int process_ea_header(AVFormatContext *s)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static uint32_t read_arbitrary(AVIOContext *pb)
void av_free_packet(AVPacket *pkt)
Free a packet.
#define AV_LOG_WARNING
Something somehow does not look correct.
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static void process_video_header_mdec(AVFormatContext *s)
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)
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media 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).
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
AVCodecID
Identify the syntax and semantics of the bitstream.
#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. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
preferred ID for decoding MPEG audio layer 1, 2 or 3
void av_log(void *avcl, int level, const char *fmt,...)
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.
static void process_audio_header_eacs(AVFormatContext *s)
int bit_rate
the average bitrate
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)
rational number numerator/denominator
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.
static void process_audio_header_sead(AVFormatContext *s)
int eof_reached
true if eof reached
int channels
number of audio channels
void * priv_data
Format private data.
static void process_video_header_cmv(AVFormatContext *s)
static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
static void process_video_header_vp6(AVFormatContext *s)
AVInputFormat ff_ea_demuxer
This structure stores compressed data.