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31 #define BRP_TAG MKTAG('B', 'R', 'P', 'P')
32 #define BRP_FILE_HEADER_SIZE 12
33 #define BRP_BLOCK_HEADER_SIZE 12
34 #define BRP_STREAM_HEADER_SIZE 20
35 #define BRP_MAX_STREAMS 32
36 #define BRP_BASF_LOOKAHEAD 10
37 #define BVID_HEADER_SIZE 16
38 #define MASK_HEADER_SIZE 12
39 #define BRP_MIN_BUFFER_SIZE FFMAX3(FFMAX3(BRP_FILE_HEADER_SIZE, \
40 BRP_BLOCK_HEADER_SIZE, \
41 BRP_STREAM_HEADER_SIZE), \
45 #define BRP_CODEC_ID_BVID MKTAG('B', 'V', 'I', 'D')
46 #define BRP_CODEC_ID_BASF MKTAG('B', 'A', 'S', 'F')
47 #define BRP_CODEC_ID_MASK MKTAG('M', 'A', 'S', 'K')
110 void *buf,
size_t bufsz)
206 }
else if (
ret > 0) {
226 if (bvid->
width >= 65536 || bvid->
height >= 65536 ||
370 if (
blk.stream_id == -1)
373 if (
blk.stream_id < -1 ||
blk.stream_id >=
s->nb_streams)
376 st =
s->streams[
blk.stream_id];
418 .
p.
name =
"argo_brp",
@ AV_ROUND_UP
Round toward +infinity.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
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
const FFInputFormat ff_argo_brp_demuxer
enum AVMediaType codec_type
General type of the encoded data.
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
static int read_extradata(AVFormatContext *s, const ArgoBRPStreamHeader *hdr, void *buf, size_t bufsz)
#define BRP_MIN_BUFFER_SIZE
#define BRP_CODEC_ID_MASK
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
static int argo_brp_read_header(AVFormatContext *s)
int ff_argo_asf_fill_stream(AVFormatContext *s, AVStream *st, const ArgoASFFileHeader *fhdr, const ArgoASFChunkHeader *ckhdr)
#define BRP_CODEC_ID_BASF
#define ASF_FILE_HEADER_SIZE
ArgoBRPStreamHeader streams[BRP_MAX_STREAMS]
static int argo_brp_read_packet(AVFormatContext *s, AVPacket *pkt)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
#define BRP_BLOCK_HEADER_SIZE
int64_t duration
Decoding: duration of the stream, in stream time base.
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
static const uint16_t mask[17]
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
#define BRP_FILE_HEADER_SIZE
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
int ff_argo_asf_validate_file_header(AVFormatContext *s, const ArgoASFFileHeader *hdr)
This structure contains the data a format has to probe a file.
int sample_rate
Audio only.
int64_t nb_frames
number of frames in this stream if known or 0
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define BRP_BASF_LOOKAHEAD
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
#define BRP_STREAM_HEADER_SIZE
#define i(width, name, range_min, range_max)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
void ff_argo_asf_parse_chunk_header(ArgoASFChunkHeader *hdr, const uint8_t *buf)
static int argo_brp_probe(const AVProbeData *p)
struct ArgoBRPDemuxContext::@351 basf
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
#define ASF_CHUNK_HEADER_SIZE
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define BRP_CODEC_ID_BVID
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define ASF_MIN_BUFFER_SIZE
static int read_probe(const AVProbeData *p)
int bits_per_coded_sample
The number of bits per sample in the codedwords.
void ff_argo_asf_parse_file_header(ArgoASFFileHeader *hdr, const uint8_t *buf)
#define avpriv_request_sample(...)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.