67 int len, xmin, xmax, ymin, ymax;
92 if (xmin || ymin || !xmax || !ymax)
95 if (p->
buf[3] >= 20 || xmax < 16 || ymax < 16)
102 static int zlib_refill(
void *opaque,
uint8_t *
buf,
int buf_size)
106 z_stream *z = &swf->zstream;
114 z->next_in = swf->zbuf_in;
119 z->avail_out = buf_size;
122 if (ret == Z_STREAM_END)
127 if (buf_size - z->avail_out == 0)
130 return buf_size - z->avail_out;
143 if (tag ==
MKBETAG(
'C',
'W',
'S', 0)) {
150 if (!swf->zbuf_in || !swf->zbuf_out || !swf->zpb)
152 swf->zpb->seekable = 0;
153 if (inflateInit(&swf->zstream) != Z_OK) {
162 }
else if (tag !=
MKBETAG(
'F',
'W',
'S', 0))
166 len = (4 * nbits - 3 + 7) / 8;
178 int sample_rate_code, sample_size_code;
193 sample_rate_code = info>>2 & 3;
194 sample_size_code = info>>1 & 1;
280 if (((v>>4) & 15) == 2) {
314 const int colormapbpp = 3 + alpha_bmp;
315 int linesize, colormapsize = 0;
318 const int bmp_fmt =
avio_r8(pb);
328 colormapsize =
avio_r8(pb) + 1;
332 linesize = width * 2;
335 linesize = width * 4;
339 goto bitmap_end_skip;
342 linesize =
FFALIGN(linesize, 4);
345 linesize >= INT_MAX / height ||
346 linesize * height >= INT_MAX - colormapsize * colormapbpp) {
348 goto bitmap_end_skip;
351 out_len = colormapsize * colormapbpp + linesize *
height;
353 ff_dlog(s,
"bitmap: ch=%d fmt=%d %dx%d (linesize=%d) len=%d->%ld pal=%d\n",
354 ch_id, bmp_fmt, width, height, linesize, len, out_len, colormapsize);
364 if (len < 0 || (res = uncompress(buf, &out_len, zbuf, len)) != Z_OK) {
366 goto bitmap_end_skip;
387 if ((res =
av_new_packet(pkt, out_len - colormapsize * colormapbpp)) < 0)
389 if (!st->codecpar->width && !st->codecpar->height) {
391 st->codecpar->height =
height;
398 if (linesize * height > pkt->
size) {
407 for (i = 0; i < colormapsize; i++)
408 if (alpha_bmp) colormap[i] = buf[3]<<24 |
AV_RB24(buf + 4*i);
409 else colormap[i] = 0xff
U <<24 |
AV_RB24(buf + 3*i);
426 if (st->codecpar->format !=
AV_PIX_FMT_NONE && st->codecpar->format != pix_fmt) {
429 st->codecpar->format =
pix_fmt;
431 memcpy(pkt->
data, buf + colormapsize*colormapbpp, linesize * height);
505 if (res != pkt->
size) {
531 inflateEnd(&s->zstream);
const AVCodecTag ff_swf_codec_tags[]
static int swf_probe(AVProbeData *p)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static enum AVPixelFormat pix_fmt
static int get_swf_tag(AVIOContext *pb, int *len_ptr)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
int ctx_flags
Flags signalling stream properties.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
8 bits with AV_PIX_FMT_RGB32 palette
unsigned int avio_rb32(AVIOContext *s)
enum AVStreamParseType need_parsing
int id
Format-specific stream ID.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
AVStream ** streams
A list of all streams in the file.
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord)
#define AVERROR_EOF
End of file.
bitstream reader API header.
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
uint64_t channel_layout
Audio only.
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.
AVIOContext * avio_alloc_context(unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Allocate and initialize an AVIOContext for buffered I/O.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVInputFormat ff_swf_demuxer
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette...
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.
preferred ID for decoding MPEG audio layer 1, 2 or 3
enum AVMediaType codec_type
General type of the encoded data.
simple assert() macros that are a bit more flexible than ISO C assert().
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
int avio_r8(AVIOContext *s)
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.
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
audio channel layout utility functions
static const AVCodecTag swf_audio_codec_tags[]
static AVStream * create_new_audio_stream(AVFormatContext *s, int id, int info)
static int swf_read_header(AVFormatContext *s)
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define AV_LOG_INFO
Standard information.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
AVIOContext * pb
I/O context.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
static void skip_bits(GetBitContext *s, int n)
This structure contains the data a format has to probe a file.
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
int sample_rate
Audio only.
static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
unsigned int avio_rl16(AVIOContext *s)
#define AV_PIX_FMT_RGB555
#define MKBETAG(a, b, c, d)
void * priv_data
Format private data.
AVCodecParameters * codecpar
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
#define AV_CH_LAYOUT_MONO
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...