34 #define SMACKER_PAL 0x01
35 #define SMACKER_FLAG_RING_FRAME 0x01
67 0x00, 0x04, 0x08, 0x0C, 0x10, 0x14, 0x18, 0x1C,
68 0x20, 0x24, 0x28, 0x2C, 0x30, 0x34, 0x38, 0x3C,
69 0x41, 0x45, 0x49, 0x4D, 0x51, 0x55, 0x59, 0x5D,
70 0x61, 0x65, 0x69, 0x6D, 0x71, 0x75, 0x79, 0x7D,
71 0x82, 0x86, 0x8A, 0x8E, 0x92, 0x96, 0x9A, 0x9E,
72 0xA2, 0xA6, 0xAA, 0xAE, 0xB2, 0xB6, 0xBA, 0xBE,
73 0xC3, 0xC7, 0xCB, 0xCF, 0xD3, 0xD7, 0xDB, 0xDF,
74 0xE3, 0xE7, 0xEB, 0xEF, 0xF3, 0xF7, 0xFB, 0xFF
102 if (magic !=
MKTAG(
'S',
'M',
'K',
'2') && magic !=
MKTAG(
'S',
'M',
'K',
'4'))
108 if (pts_inc > INT_MAX / 100 || pts_inc == INT_MIN) {
116 if (smk->
frames > 0xFFFFFF) {
124 if (treesize >= UINT_MAX/4) {
141 av_reduce(&tbase, &pts_inc, tbase, pts_inc, (1UL << 31) - 1);
156 "Cannot allocate %"PRIu32
" bytes of extradata\n",
164 for (
i = 0;
i < 7;
i++) {
253 memcpy(oldpal, pal, 768);
266 sz += (t & 0x7F) + 1;
267 pal += ((t & 0x7F) + 1) * 3;
268 }
else if (t & 0x40) {
271 if (off + j > 0x100) {
273 "Invalid palette update, offset=%d length=%d extends beyond palette size\n",
279 while (j-- && sz < 256) {
280 *pal++ = oldpal[off + 0];
281 *pal++ = oldpal[off + 1];
282 *pal++ = oldpal[off + 2];
299 if (smk->
flags & (1 <<
i)) {
371 if (timestamp != 0) {
373 "Random seeks are not supported (can only seek to start).\n");
377 if ((ret =
avio_seek(
s->pb,
s->internal->data_offset, SEEK_SET)) < 0)
383 memset(smk->
pal, 0,
sizeof(smk->
pal));
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
unsigned int avio_rl32(AVIOContext *s)
unsigned int avio_rl24(AVIOContext *s)
int avio_r8(AVIOContext *s)
int ffio_read_size(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define flags(name, subs,...)
audio channel layout utility functions
#define MKTAG(a, b, c, d)
static int read_header(FFV1Context *f)
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_STEREO
@ AV_CODEC_ID_BINKAUDIO_DCT
@ AV_CODEC_ID_BINKAUDIO_RDFT
@ AVDISCARD_ALL
discard all
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AVERROR_EOF
End of file.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
This struct describes the properties of an encoded stream.
int extradata_size
Size of the extradata content in bytes.
uint64_t channel_layout
Audio only.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
enum AVMediaType codec_type
General type of the encoded data.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
This structure stores compressed data.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
This structure contains the data a format has to probe a file.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int64_t duration
Decoding: duration of the stream, in stream time base.
int index
stream index in AVFormatContext
#define av_malloc_array(a, b)