75
ByteIOContext *av_alloc_put_byte(
76
unsigned char *buffer,
80
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
81
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
82
int64_t (*seek)(void *opaque, int64_t offset, int whence))
84
ByteIOContext *s = av_mallocz(sizeof(ByteIOContext));
85
init_put_byte(s, buffer, buffer_size, write_flag, opaque,
82
int init_put_byte(AVIOContext *s,
83
unsigned char *buffer,
87
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
88
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
89
int64_t (*seek)(void *opaque, int64_t offset, int whence))
91
return ffio_init_context(s, buffer, buffer_size, write_flag, opaque,
92
read_packet, write_packet, seek);
94
AVIOContext *av_alloc_put_byte(
95
unsigned char *buffer,
99
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
100
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
101
int64_t (*seek)(void *opaque, int64_t offset, int whence))
103
return avio_alloc_context(buffer, buffer_size, write_flag, opaque,
104
read_packet, write_packet, seek);
108
AVIOContext *avio_alloc_context(
109
unsigned char *buffer,
113
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
114
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
115
int64_t (*seek)(void *opaque, int64_t offset, int whence))
117
AVIOContext *s = av_mallocz(sizeof(AVIOContext));
118
ffio_init_context(s, buffer, buffer_size, write_flag, opaque,
86
119
read_packet, write_packet, seek);
90
static void flush_buffer(ByteIOContext *s)
123
static void flush_buffer(AVIOContext *s)
92
125
if (s->buf_ptr > s->buffer) {
93
126
if (s->write_packet && !s->error){
222
int url_feof(ByteIOContext *s)
273
int url_feof(AVIOContext *s)
226
277
return s->eof_reached;
229
int url_ferror(ByteIOContext *s)
280
int url_ferror(AVIOContext *s)
236
void put_le32(ByteIOContext *s, unsigned int val)
239
put_byte(s, val >> 8);
240
put_byte(s, val >> 16);
241
put_byte(s, val >> 24);
244
void put_be32(ByteIOContext *s, unsigned int val)
246
put_byte(s, val >> 24);
247
put_byte(s, val >> 16);
248
put_byte(s, val >> 8);
252
void put_strz(ByteIOContext *s, const char *str)
255
put_buffer(s, (const unsigned char *) str, strlen(str) + 1);
260
void put_le64(ByteIOContext *s, uint64_t val)
262
put_le32(s, (uint32_t)(val & 0xffffffff));
263
put_le32(s, (uint32_t)(val >> 32));
266
void put_be64(ByteIOContext *s, uint64_t val)
268
put_be32(s, (uint32_t)(val >> 32));
269
put_be32(s, (uint32_t)(val & 0xffffffff));
272
void put_le16(ByteIOContext *s, unsigned int val)
275
put_byte(s, val >> 8);
278
void put_be16(ByteIOContext *s, unsigned int val)
280
put_byte(s, val >> 8);
284
void put_le24(ByteIOContext *s, unsigned int val)
286
put_le16(s, val & 0xffff);
287
put_byte(s, val >> 16);
290
void put_be24(ByteIOContext *s, unsigned int val)
292
put_be16(s, val >> 8);
296
void put_tag(ByteIOContext *s, const char *tag)
288
void avio_wl32(AVIOContext *s, unsigned int val)
291
avio_w8(s, val >> 8);
292
avio_w8(s, val >> 16);
293
avio_w8(s, val >> 24);
296
void avio_wb32(AVIOContext *s, unsigned int val)
298
avio_w8(s, val >> 24);
299
avio_w8(s, val >> 16);
300
avio_w8(s, val >> 8);
305
void put_strz(AVIOContext *s, const char *str)
307
avio_put_str(s, str);
310
#define GET(name, type) \
311
type get_be ##name(AVIOContext *s) \
313
return avio_rb ##name(s);\
315
type get_le ##name(AVIOContext *s) \
317
return avio_rl ##name(s);\
320
GET(16, unsigned int)
321
GET(24, unsigned int)
322
GET(32, unsigned int)
327
#define PUT(name, type ) \
328
void put_le ##name(AVIOContext *s, type val)\
330
avio_wl ##name(s, val);\
332
void put_be ##name(AVIOContext *s, type val)\
334
avio_wb ##name(s, val);\
337
PUT(16, unsigned int)
338
PUT(24, unsigned int)
339
PUT(32, unsigned int)
343
int get_byte(AVIOContext *s)
347
int get_buffer(AVIOContext *s, unsigned char *buf, int size)
349
return avio_read(s, buf, size);
351
int get_partial_buffer(AVIOContext *s, unsigned char *buf, int size)
353
return ffio_read_partial(s, buf, size);
355
void put_byte(AVIOContext *s, int val)
359
void put_buffer(AVIOContext *s, const unsigned char *buf, int size)
361
avio_write(s, buf, size);
363
void put_nbyte(AVIOContext *s, int b, int count)
365
ffio_fill(s, b, count);
368
int url_fopen(AVIOContext **s, const char *filename, int flags)
370
return avio_open(s, filename, flags);
372
int url_fclose(AVIOContext *s)
374
return avio_close(s);
376
int64_t url_fseek(AVIOContext *s, int64_t offset, int whence)
378
return avio_seek(s, offset, whence);
380
int64_t url_fsize(AVIOContext *s)
384
int url_setbufsize(AVIOContext *s, int buf_size)
386
return ffio_set_buf_size(s, buf_size);
388
int url_fprintf(AVIOContext *s, const char *fmt, ...)
395
ret = vsnprintf(buf, sizeof(buf), fmt, ap);
397
avio_write(s, buf, strlen(buf));
400
void put_flush_packet(AVIOContext *s)
404
int av_url_read_fpause(AVIOContext *s, int pause)
406
return avio_pause(s, pause);
408
int64_t av_url_read_fseek(AVIOContext *s, int stream_index,
409
int64_t timestamp, int flags)
411
return avio_seek_time(s, stream_index, timestamp, flags);
413
void init_checksum(AVIOContext *s,
414
unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
415
unsigned long checksum)
417
ffio_init_checksum(s, update_checksum, checksum);
419
unsigned long get_checksum(AVIOContext *s)
421
return ffio_get_checksum(s);
423
int url_open_dyn_buf(AVIOContext **s)
425
return avio_open_dyn_buf(s);
427
int url_open_dyn_packet_buf(AVIOContext **s, int max_packet_size)
429
return ffio_open_dyn_packet_buf(s, max_packet_size);
431
int url_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
433
return avio_close_dyn_buf(s, pbuffer);
435
int url_fdopen(AVIOContext **s, URLContext *h)
437
return ffio_fdopen(s, h);
441
int avio_put_str(AVIOContext *s, const char *str)
446
avio_write(s, (const unsigned char *) str, len);
452
int avio_put_str16le(AVIOContext *s, const char *str)
454
const uint8_t *q = str;
461
GET_UTF8(ch, *q++, break;)
462
PUT_UTF16(ch, tmp, avio_wl16(s, tmp);ret += 2;)
469
int ff_get_v_length(uint64_t val){
478
void ff_put_v(AVIOContext *bc, uint64_t val){
479
int i= ff_get_v_length(val);
482
avio_w8(bc, 128 | (val>>(7*i)));
484
avio_w8(bc, val&127);
487
void avio_wl64(AVIOContext *s, uint64_t val)
489
avio_wl32(s, (uint32_t)(val & 0xffffffff));
490
avio_wl32(s, (uint32_t)(val >> 32));
493
void avio_wb64(AVIOContext *s, uint64_t val)
495
avio_wb32(s, (uint32_t)(val >> 32));
496
avio_wb32(s, (uint32_t)(val & 0xffffffff));
499
void avio_wl16(AVIOContext *s, unsigned int val)
502
avio_w8(s, val >> 8);
505
void avio_wb16(AVIOContext *s, unsigned int val)
507
avio_w8(s, val >> 8);
511
void avio_wl24(AVIOContext *s, unsigned int val)
513
avio_wl16(s, val & 0xffff);
514
avio_w8(s, val >> 16);
517
void avio_wb24(AVIOContext *s, unsigned int val)
519
avio_wb16(s, val >> 8);
524
void put_tag(AVIOContext *s, const char *tag)
303
532
/* Input stream */
305
static void fill_buffer(ByteIOContext *s)
534
static void fill_buffer(AVIOContext *s)
307
uint8_t *dst= !s->max_packet_size && s->buf_end - s->buffer < s->buffer_size ? s->buf_ptr : s->buffer;
536
uint8_t *dst= !s->max_packet_size && s->buf_end - s->buffer < s->buffer_size ? s->buf_end : s->buffer;
308
537
int len= s->buffer_size - (dst - s->buffer);
309
538
int max_buffer_size = s->max_packet_size ? s->max_packet_size : IO_BUFFER_SIZE;
311
assert(s->buf_ptr == s->buf_end);
313
540
/* no need to do anything if EOF already reached */
314
541
if (s->eof_reached)
460
681
memcpy(buf, s->buf_ptr, len);
461
682
s->buf_ptr += len;
463
if (url_ferror(s)) return url_ferror(s);
464
if (url_feof(s)) return AVERROR_EOF;
684
if (s->error) return s->error;
685
if (s->eof_reached) return AVERROR_EOF;
469
unsigned int get_le16(ByteIOContext *s)
473
val |= get_byte(s) << 8;
477
unsigned int get_le24(ByteIOContext *s)
481
val |= get_byte(s) << 16;
485
unsigned int get_le32(ByteIOContext *s)
489
val |= get_le16(s) << 16;
493
uint64_t get_le64(ByteIOContext *s)
690
unsigned int avio_rl16(AVIOContext *s)
694
val |= avio_r8(s) << 8;
698
unsigned int avio_rl24(AVIOContext *s)
702
val |= avio_r8(s) << 16;
706
unsigned int avio_rl32(AVIOContext *s)
710
val |= avio_rl16(s) << 16;
714
uint64_t avio_rl64(AVIOContext *s)
496
val = (uint64_t)get_le32(s);
497
val |= (uint64_t)get_le32(s) << 32;
501
unsigned int get_be16(ByteIOContext *s)
504
val = get_byte(s) << 8;
509
unsigned int get_be24(ByteIOContext *s)
512
val = get_be16(s) << 8;
516
unsigned int get_be32(ByteIOContext *s)
519
val = get_be16(s) << 16;
524
char *get_strz(ByteIOContext *s, char *buf, int maxlen)
717
val = (uint64_t)avio_rl32(s);
718
val |= (uint64_t)avio_rl32(s) << 32;
722
unsigned int avio_rb16(AVIOContext *s)
725
val = avio_r8(s) << 8;
730
unsigned int avio_rb24(AVIOContext *s)
733
val = avio_rb16(s) << 8;
737
unsigned int avio_rb32(AVIOContext *s)
740
val = avio_rb16(s) << 16;
746
char *get_strz(AVIOContext *s, char *buf, int maxlen)
748
avio_get_str(s, INT_MAX, buf, maxlen);
753
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
529
while ((c = get_byte(s))) {
760
if (c && i < maxlen-1)
534
buf[i] = 0; /* Ensure null terminated, but may be truncated */
539
uint64_t get_be64(ByteIOContext *s)
762
} while (c != '\n' && c);
768
int avio_get_str(AVIOContext *s, int maxlen, char *buf, int buflen)
772
// reserve 1 byte for terminating 0
773
buflen = FFMIN(buflen - 1, maxlen);
774
for (i = 0; i < buflen; i++)
775
if (!(buf[i] = avio_r8(s)))
779
for (; i < maxlen; i++)
785
#define GET_STR16(type, read) \
786
int avio_get_str16 ##type(AVIOContext *pb, int maxlen, char *buf, int buflen)\
790
while (ret + 1 < maxlen) {\
793
GET_UTF16(ch, (ret += 2) <= maxlen ? read(pb) : 0, break;)\
796
PUT_UTF8(ch, tmp, if (q - buf < buflen - 1) *q++ = tmp;)\
802
GET_STR16(le, avio_rl16)
803
GET_STR16(be, avio_rb16)
807
uint64_t avio_rb64(AVIOContext *s)
542
val = (uint64_t)get_be32(s) << 32;
543
val |= (uint64_t)get_be32(s);
810
val = (uint64_t)avio_rb32(s) << 32;
811
val |= (uint64_t)avio_rb32(s);
547
uint64_t ff_get_v(ByteIOContext *bc){
815
uint64_t ffio_read_varlen(AVIOContext *bc){
548
816
uint64_t val = 0;
553
821
val= (val<<7) + (tmp&127);
558
int url_fdopen(ByteIOContext **s, URLContext *h)
826
int ffio_fdopen(AVIOContext **s, URLContext *h)
561
829
int buffer_size, max_packet_size;
563
max_packet_size = url_get_max_packet_size(h);
831
max_packet_size = h->max_packet_size;
564
832
if (max_packet_size) {
565
833
buffer_size = max_packet_size; /* no need to bufferize more than one packet */
707
981
va_start(ap, fmt);
708
982
ret = vsnprintf(buf, sizeof(buf), fmt, ap);
710
put_buffer(s, buf, strlen(buf));
984
avio_write(s, buf, strlen(buf));
713
#endif //CONFIG_MUXERS
715
char *url_fgets(ByteIOContext *s, char *buf, int buf_size)
989
char *url_fgets(AVIOContext *s, char *buf, int buf_size)
725
if (c == EOF || c == '\n')
999
if (s->eof_reached || c == '\n')
727
1001
if ((q - buf) < buf_size - 1)
731
1005
if (buf_size > 0)
736
int url_fget_max_packet_size(ByteIOContext *s)
1010
int url_fget_max_packet_size(AVIOContext *s)
738
1012
return s->max_packet_size;
741
int av_url_read_fpause(ByteIOContext *s, int pause)
1016
int avio_pause(AVIOContext *s, int pause)
743
1018
if (!s->read_pause)
744
1019
return AVERROR(ENOSYS);
745
1020
return s->read_pause(s->opaque, pause);
748
int64_t av_url_read_fseek(ByteIOContext *s, int stream_index,
749
int64_t timestamp, int flags)
1023
int64_t avio_seek_time(AVIOContext *s, int stream_index,
1024
int64_t timestamp, int flags)
751
1026
URLContext *h = s->opaque;
868
1141
d = av_mallocz(sizeof(DynBuffer) + io_buffer_size);
870
1143
return AVERROR(ENOMEM);
871
*s = av_mallocz(sizeof(ByteIOContext));
874
return AVERROR(ENOMEM);
876
1144
d->io_buffer_size = io_buffer_size;
877
ret = init_put_byte(*s, d->io_buffer, io_buffer_size,
879
max_packet_size ? dyn_packet_buf_write : dyn_buf_write,
880
max_packet_size ? NULL : dyn_buf_seek);
882
(*s)->max_packet_size = max_packet_size;
1145
*s = avio_alloc_context(d->io_buffer, d->io_buffer_size, 1, d, NULL,
1146
max_packet_size ? dyn_packet_buf_write : dyn_buf_write,
1147
max_packet_size ? NULL : dyn_buf_seek);
1150
return AVERROR(ENOMEM);
1152
(*s)->max_packet_size = max_packet_size;
890
int url_open_dyn_buf(ByteIOContext **s)
1156
int avio_open_dyn_buf(AVIOContext **s)
892
1158
return url_open_dyn_buf_internal(s, 0);
895
int url_open_dyn_packet_buf(ByteIOContext **s, int max_packet_size)
1161
int ffio_open_dyn_packet_buf(AVIOContext **s, int max_packet_size)
897
1163
if (max_packet_size <= 0)
899
1165
return url_open_dyn_buf_internal(s, max_packet_size);
902
int url_close_dyn_buf(ByteIOContext *s, uint8_t **pbuffer)
1168
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
904
1170
DynBuffer *d = s->opaque;
1172
static const char padbuf[FF_INPUT_BUFFER_PADDING_SIZE] = {0};
1175
/* don't attempt to pad fixed-size packet buffers */
1176
if (!s->max_packet_size) {
1177
avio_write(s, padbuf, sizeof(padbuf));
1178
padding = FF_INPUT_BUFFER_PADDING_SIZE;
909
1183
*pbuffer = d->buffer;
1187
return size - padding;
915
#endif /* CONFIG_MUXERS || CONFIG_NETWORK */