31 #define APE_MIN_VERSION 3950
32 #define APE_MAX_VERSION 3990
34 #define MAC_FORMAT_FLAG_8_BIT 1 // is 8-bit [OBSOLETE]
35 #define MAC_FORMAT_FLAG_CRC 2 // uses the new CRC32 error detection [OBSOLETE]
36 #define MAC_FORMAT_FLAG_HAS_PEAK_LEVEL 4 // uint32 nPeakLevel after the header [OBSOLETE]
37 #define MAC_FORMAT_FLAG_24_BIT 8 // is 24-bit [OBSOLETE]
38 #define MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS 16 // has the number of seek elements after the peak level
39 #define MAC_FORMAT_FLAG_CREATE_WAV_HEADER 32 // create the wave header on decompression (not stored)
41 #define MAC_SUBFRAME_SIZE 4608
43 #define APE_EXTRADATA_SIZE 6
90 if (p->
buf[0] ==
'M' && p->
buf[1] ==
'A' && p->
buf[2] ==
'C' && p->
buf[3] ==
' ')
112 for (i = 0; i < 16; i++)
132 if (i < ape_ctx->totalframes - 1) {
162 int total_blocks, final_size = 0;
163 int64_t pts, file_size;
169 if (tag !=
MKTAG(
'M',
'A',
'C',
' '))
260 "Number of seek entries is less than number of frames: %zu vs. %"PRIu32
"\n",
300 final_size -= final_size & 3;
302 if (file_size <= 0 || final_size <= 0)
443 .extensions =
"ape,apl,mac",
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static int ape_read_close(AVFormatContext *s)
int64_t avio_size(AVIOContext *s)
Get the filesize.
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 fileversion
codec version, very important in decoding process
#define MAC_FORMAT_FLAG_24_BIT
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
#define MAC_FORMAT_FLAG_HAS_PEAK_LEVEL
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
#define MAC_SUBFRAME_SIZE
static int ape_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
static int ape_probe(AVProbeData *p)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static av_cold int read_close(AVFormatContext *ctx)
#define MKTAG(a, b, c, d)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
#define MAC_FORMAT_FLAG_8_BIT
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
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.
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
static int64_t extra_size
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
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.
struct APEContext APEContext
Decoder context.
#define MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS
int64_t ff_ape_parse_tag(AVFormatContext *s)
Read and parse an APE tag.
AVCodecContext * codec
Codec context associated with this stream.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
static av_always_inline int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
static int ape_read_packet(AVFormatContext *s, AVPacket *pkt)
uint32_t finalframeblocks
AVInputFormat ff_ape_demuxer
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 ape_read_header(AVFormatContext *s)
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
This structure contains the data a format has to probe a file.
int64_t duration
Decoding: duration of the stream, in stream time base.
uint32_t descriptorlength
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
int64_t nb_frames
number of frames in this stream if known or 0
int eof_reached
true if eof reached
int channels
number of audio channels
void * priv_data
Format private data.
#define APE_EXTRADATA_SIZE
static void ape_dumpinfo(AVFormatContext *s, APEContext *ape_ctx)
uint32_t audiodatalength_high
#define MAC_FORMAT_FLAG_CREATE_WAV_HEADER
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
if(!(ptr_align%ac->ptr_align)&&samples_align >=aligned_len)