31 #define APE_MIN_VERSION 3800 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 APE_EXTRADATA_SIZE 6 111 for (i = 0; i < 16; i++)
151 int total_blocks, final_size = 0;
152 int64_t
pts, file_size;
158 if (tag !=
MKTAG(
'M',
'A',
'C',
' '))
249 "Number of seek entries is less than number of frames: %"SIZE_SPECIFIER" vs. %"PRIu32
"\n",
271 uint32_t seektable_entry =
avio_rl32(pb);
282 ff_dlog(s,
"seektable: %8d %"PRIu32
"\n", i, seektable_entry);
292 final_size -= final_size & 3;
294 if (file_size <= 0 || final_size <= 0)
313 ff_dlog(s,
"bittable: %2d\n", bits);
380 uint32_t extra_size = 8;
422 pkt->
size = ret + extra_size;
462 .extensions =
"ape,apl,mac",
static int ape_read_close(AVFormatContext *s)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
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)
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 avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
#define MAC_FORMAT_FLAG_HAS_PEAK_LEVEL
static int ape_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
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 ape_probe(const AVProbeData *p)
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
#define AV_LOG_VERBOSE
Detailed information.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
#define MAC_FORMAT_FLAG_8_BIT
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.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
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.
enum AVMediaType codec_type
General type of the encoded data.
#define MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS
int64_t ff_ape_parse_tag(AVFormatContext *s)
Read and parse an APE tag.
int avio_r8(AVIOContext *s)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
static int ape_read_packet(AVFormatContext *s, AVPacket *pkt)
uint32_t finalframeblocks
AVInputFormat ff_ape_demuxer
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)
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
AVStreamInternal * internal
An opaque field for libavformat internal usage.
AVIOContext * pb
I/O context.
static int ape_read_header(AVFormatContext *s)
This structure contains the data a format has to probe a file.
#define flags(name, subs,...)
int64_t duration
Decoding: duration of the stream, in stream time base.
uint32_t descriptorlength
int sample_rate
Audio only.
unsigned int avio_rl16(AVIOContext *s)
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
int64_t nb_frames
number of frames in this stream if known or 0
int eof_reached
true if was unable to read due to error or eof
void * priv_data
Format private data.
#define APE_EXTRADATA_SIZE
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
#define av_malloc_array(a, b)
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
static void ape_dumpinfo(AVFormatContext *s, APEContext *ape_ctx)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
#define MKTAG(a, b, c, d)
uint32_t audiodatalength_high
#define MAC_FORMAT_FLAG_CREATE_WAV_HEADER
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...