73 #if CONFIG_BINTEXT_DEMUXER | CONFIG_ADF_DEMUXER | CONFIG_IDF_DEMUXER
83 #if CONFIG_BINTEXT_DEMUXER
84 static const uint8_t next_magic[]={
85 0x1A, 0x1B,
'[',
'0',
';',
'3',
'0',
';',
'4',
'0',
'm',
'N',
'E',
'X',
'T', 0x00
96 if (
avio_read(pb, buf,
sizeof(next_magic)) !=
sizeof(next_magic))
98 if (memcmp(buf, next_magic,
sizeof(next_magic)))
105 #define GET_EFI2_META(name,size) \
107 if (len < 1 || len > size) \
109 if (avio_read(pb, buf, size) == size && *buf) { \
111 av_dict_set(&avctx->metadata, name, buf, 0); \
114 GET_EFI2_META(
"filename", 12)
115 GET_EFI2_META("author", 20)
116 GET_EFI2_META("publisher", 20)
117 GET_EFI2_META("title", 35)
126 par->width =
fsize > 4000 ? (160<<3) : (80<<3);
132 int magic = 0, sauce = 0;
137 magic = !memcmp(d + p->
buf_size - 256, next_magic,
sizeof(next_magic));
139 sauce = !memcmp(d + p->
buf_size - 128,
"SAUCE00", 7);
151 predict_width(&par, p->
buf_size, got_width);
154 calculate_height(&par, p->
buf_size);
159 if ((d[
i+1] & 15) == (d[
i+1] >> 4) && d[
i] && d[
i] != 0xFF && d[
i] !=
' ') {
195 next_tag_read(
s, &bin->
fsize);
208 #if CONFIG_XBIN_DEMUXER
213 if (
AV_RL32(d) ==
MKTAG(
'X',
'B',
'I',
'N') && d[4] == 0x1A &&
215 d[9] > 0 && d[9] <= 32)
224 char fontheight,
flags;
262 #if CONFIG_ADF_DEMUXER
306 #if CONFIG_IDF_DEMUXER
307 static const uint8_t idf_magic[] = {
308 0x04, 0x31, 0x2e, 0x34, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x00, 0x15, 0x00
313 if (p->
buf_size <
sizeof(idf_magic))
315 if (!memcmp(p->
buf, idf_magic,
sizeof(idf_magic)))
325 int got_width = 0, ret;
363 if (bin->
fsize > 0) {
367 }
else if (!bin->
fsize) {
380 #define OFFSET(x) offsetof(BinDemuxContext, x)
388 #define CLASS(name) \
389 (const AVClass[1]){{ \
390 .class_name = name, \
391 .item_name = av_default_item_name, \
393 .version = LIBAVUTIL_VERSION_INT, \
396 #if CONFIG_BINTEXT_DEMUXER
404 .priv_class =
CLASS(
"Binary text demuxer"),
408 #if CONFIG_XBIN_DEMUXER
416 .priv_class =
CLASS(
"eXtended BINary text (XBIN) demuxer"),
420 #if CONFIG_ADF_DEMUXER
428 .priv_class =
CLASS(
"Artworx Data Format demuxer"),
432 #if CONFIG_IDF_DEMUXER
441 .priv_class =
CLASS(
"iCE Draw File demuxer"),
static int64_t fsize(FILE *f)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
int64_t avio_size(AVIOContext *s)
Get the filesize.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
unsigned int avio_rl16(AVIOContext *s)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int avio_r8(AVIOContext *s)
#define flags(name, subs,...)
#define MKTAG(a, b, c, d)
static int read_header(FFV1Context *f)
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static double av_q2d(AVRational a)
Convert an AVRational to a double.
static const AVOption options[]
static int read_packet(AVFormatContext *s, AVPacket *pkt)
static AVStream * init_stream(AVFormatContext *s)
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
int ff_sauce_read(AVFormatContext *avctx, uint64_t *fsize, int *got_width, int get_height)
Describe the class of an AVClass context structure.
This struct describes the properties of an encoded stream.
int extradata_size
Size of the extradata content in bytes.
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).
AVIOContext * pb
I/O context.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
This structure stores compressed data.
int flags
A combination of AV_PKT_FLAG values.
This structure contains the data a format has to probe a file.
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.
Rational number (pair of numerator and denominator).
AVCodecParameters * codecpar
Codec parameters associated with this stream.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
int height
video size (WxH pixels) (private option)
uint64_t fsize
file size less metadata buffer
AVRational framerate
frames per second (private option)
int chars_per_frame
characters to send decoder per frame; set by private options as characters per second,...