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31 #define PP_BNK_MAX_READ_SIZE 4096
32 #define PP_BNK_FILE_HEADER_SIZE 20
33 #define PP_BNK_TRACK_SIZE 20
94 if (track_count == 0 || track_count > INT_MAX)
97 if ((sample_rate != 5512) && (sample_rate != 11025) &&
98 (sample_rate != 22050) && (sample_rate != 44100))
156 ctx->track_count =
i;
182 ctx->track_count =
i + 1;
184 "Track %d has truncated data, assuming track count == %d\n",
185 i,
ctx->track_count);
187 }
else if (
ret < 0) {
193 if (
ctx->track_count == 0)
197 (
ctx->track_count == 2) &&
198 (
ctx->tracks[0].data_size ==
ctx->tracks[1].data_size);
201 for (
int i = 0;
i < (
ctx->is_music ? 1 :
ctx->track_count);
i++) {
233 for (
int i = 0;
i <
ctx->track_count;
i++,
ctx->current_track++)
239 ctx->current_track %=
ctx->track_count;
241 trk =
ctx->tracks +
ctx->current_track;
253 if (!
ctx->is_music) {
284 ctx->current_track++;
311 ctx->tracks[0].bytes_read = 0;
312 ctx->tracks[1].bytes_read = 0;
314 ctx->tracks[stream_index].bytes_read = 0;
#define AV_LOG_WARNING
Something somehow does not look correct.
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
enum AVMediaType codec_type
General type of the encoded data.
This struct describes the properties of an encoded stream.
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 void pp_bnk_parse_header(PPBnkHeader *hdr, const uint8_t *buf)
static int pp_bnk_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
@ AV_CODEC_ID_ADPCM_IMA_CUNNING
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
int nb_channels
Number of channels in this layout.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int64_t duration
Decoding: duration of the stream, in stream time base.
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
static int pp_bnk_probe(const AVProbeData *p)
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
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.
static int pp_bnk_read_close(AVFormatContext *s)
#define PP_BNK_MAX_READ_SIZE
#define FF_INFMT_FLAG_INIT_CLEANUP
For an FFInputFormat with this flag set read_close() needs to be called by the caller upon read_heade...
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
This structure contains the data a format has to probe a file.
AVChannelLayout ch_layout
Audio only.
int sample_rate
Audio only.
static void pp_bnk_parse_track(PPBnkTrack *trk, const uint8_t *buf)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define PP_BNK_TRACK_SIZE
int flags
A combination of AV_PKT_FLAG values.
@ AV_SAMPLE_FMT_S16P
signed 16 bits, planar
static int pp_bnk_read_header(AVFormatContext *s)
void av_channel_layout_default(AVChannelLayout *ch_layout, int nb_channels)
Get the default channel layout for a given number of channels.
#define i(width, name, range_min, range_max)
int block_align
Audio only.
#define av_malloc_array(a, b)
const FFInputFormat ff_pp_bnk_demuxer
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define PP_BNK_FILE_HEADER_SIZE
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
static int pp_bnk_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
static int read_probe(const AVProbeData *p)
int bits_per_coded_sample
The number of bits per sample in the codedwords.
#define avpriv_request_sample(...)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
#define flags(name, subs,...)
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.