30 #define MPC_FRAMESIZE 1152
31 #define DELAY_FRAMES 32
33 static const int mpc_rate[4] = { 44100, 48000, 37800, 32000 };
51 if (d[0] ==
'M' && d[1] ==
'P' && d[2] ==
'+' && (d[3] == 0x17 || d[3] == 0x7))
67 if(
c->ver != 0x07 &&
c->ver != 0x17){
125 int ret,
size, size2, curbits, cur =
c->curframe;
129 if (
c->curframe >=
c->fcount &&
c->fcount)
132 if(
c->curframe !=
c->lastframe + 1){
134 c->curbits =
c->frames[
c->curframe].skip;
136 c->lastframe =
c->curframe;
138 curbits =
c->curbits;
142 size2 = (
tmp >> (12 - curbits)) & 0xFFFFF;
144 size2 = (
tmp << (curbits - 12) |
avio_rl32(
s->pb) >> (44 - curbits)) & 0xFFFFF;
149 size = ((size2 + curbits + 31) & ~31) >> 3;
150 if(cur ==
c->frames_noted &&
c->fcount){
151 c->frames[cur].pos =
pos;
152 c->frames[cur].size =
size;
153 c->frames[cur].skip = curbits - 20;
157 c->curbits = (curbits + size2) & 0x1F;
163 pkt->
data[1] = (
c->curframe >
c->fcount) &&
c->fcount;
173 return ret < 0 ? ret :
AVERROR(EIO);
202 if(timestamp < 0 || timestamp >=
c->fcount)
207 lastframe =
c->curframe;
208 if(
c->frames_noted)
c->curframe =
c->frames_noted - 1;
209 while(
c->curframe < timestamp){
212 c->curframe = lastframe;
int64_t ff_ape_parse_tag(AVFormatContext *s)
Read and parse an APE tag.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
unsigned int avio_rl32(AVIOContext *s)
unsigned int avio_rl24(AVIOContext *s)
int avio_r8(AVIOContext *s)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define flags(name, subs,...)
audio channel layout utility functions
#define MKTAG(a, b, c, d)
static int read_header(FFV1Context *f)
#define AV_CH_LAYOUT_STEREO
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AVERROR_EOF
End of file.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void ff_id3v1_read(AVFormatContext *s)
Read an ID3v1 tag.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
uint64_t channel_layout
Audio only.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
enum AVMediaType codec_type
General type of the encoded data.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
This structure contains the data a format has to probe a file.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int64_t duration
Decoding: duration of the stream, in stream time base.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.