39 #define FLIC_FILE_MAGIC_1 0xAF11 40 #define FLIC_FILE_MAGIC_2 0xAF12 41 #define FLIC_FILE_MAGIC_3 0xAF44 43 #define FLIC_CHUNK_MAGIC_1 0xF1FA 44 #define FLIC_CHUNK_MAGIC_2 0xF5FA 45 #define FLIC_MC_SPEED 5 46 #define FLIC_DEFAULT_SPEED 5 47 #define FLIC_TFTD_CHUNK_AUDIO 0xAAAA 49 #define FLIC_TFTD_SAMPLE_RATE 22050 51 #define FLIC_HEADER_SIZE 128 52 #define FLIC_PREAMBLE_SIZE 6 102 magic_number =
AV_RL16(&header[4]);
103 speed =
AV_RL32(&header[0x10]);
122 "File with no specified width/height. Trying 640x480.\n");
#define FLIC_CHUNK_MAGIC_2
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
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.
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
#define FLIC_FILE_MAGIC_2
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int index
stream index in AVFormatContext
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 FLIC_TFTD_CHUNK_AUDIO
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.
#define AVERROR_EOF
End of file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
static const uint8_t header[24]
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
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.
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
enum AVMediaType codec_type
General type of the encoded data.
#define FLIC_FILE_MAGIC_3
int flags
A combination of AV_PKT_FLAG values.
int extradata_size
Size of the extradata content in bytes.
int buf_size
Size of buf except extra allocated bytes.
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 block_align
Audio only.
audio channel layout utility functions
#define FLIC_TFTD_SAMPLE_RATE
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define FLIC_FILE_MAGIC_1
AVStreamInternal * internal
An opaque field for libavformat internal usage.
static int flic_read_header(AVFormatContext *s)
AVIOContext * pb
I/O context.
AVInputFormat ff_flic_demuxer
#define FLIC_CHUNK_MAGIC_1
#define FLIC_PREAMBLE_SIZE
This structure contains the data a format has to probe a file.
#define flags(name, subs,...)
int sample_rate
Audio only.
#define FLIC_DEFAULT_SPEED
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
static int flic_probe(const AVProbeData *p)
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
static int flic_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
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).
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 AV_CH_LAYOUT_MONO
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...
static int flic_read_packet(AVFormatContext *s, AVPacket *pkt)