* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/crc.h"
+#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "avio.h"
-#include "crc.h"
+#include "avio_internal.h"
+#include "internal.h"
#include <stdarg.h>
#define IO_BUFFER_SIZE 32768
-static void fill_buffer(ByteIOContext *s);
+/**
+ * Do seeks within this distance ahead of the current buffer by skipping
+ * data instead of calling the protocol seek function, for seekable
+ * protocols.
+ */
+#define SHORT_SEEK_THRESHOLD 4096
+
+static void fill_buffer(AVIOContext *s);
+#if !FF_API_URL_RESETBUF
+static int url_resetbuf(AVIOContext *s, int flags);
+#endif
-int init_put_byte(ByteIOContext *s,
+int ffio_init_context(AVIOContext *s,
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),
- offset_t (*seek)(void *opaque, offset_t offset, int whence))
+ int64_t (*seek)(void *opaque, int64_t offset, int whence))
{
s->buffer = buffer;
s->buffer_size = buffer_size;
s->buf_ptr = buffer;
- url_resetbuf(s, write_flag ? URL_WRONLY : URL_RDONLY);
s->opaque = opaque;
+ url_resetbuf(s, write_flag ? URL_WRONLY : URL_RDONLY);
s->write_packet = write_packet;
s->read_packet = read_packet;
s->seek = seek;
s->pos = buffer_size;
s->buf_end = s->buffer + buffer_size;
}
+ s->read_pause = NULL;
+ s->read_seek = NULL;
return 0;
}
-static void flush_buffer(ByteIOContext *s)
+#if FF_API_OLD_AVIO
+int init_put_byte(AVIOContext *s,
+ 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))
+{
+ return ffio_init_context(s, buffer, buffer_size, write_flag, opaque,
+ read_packet, write_packet, seek);
+}
+AVIOContext *av_alloc_put_byte(
+ 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))
+{
+ return avio_alloc_context(buffer, buffer_size, write_flag, opaque,
+ read_packet, write_packet, seek);
+}
+#endif
+
+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))
+{
+ AVIOContext *s = av_mallocz(sizeof(AVIOContext));
+ ffio_init_context(s, buffer, buffer_size, write_flag, opaque,
+ read_packet, write_packet, seek);
+ return s;
+}
+
+static void flush_buffer(AVIOContext *s)
{
if (s->buf_ptr > s->buffer) {
if (s->write_packet && !s->error){
s->buf_ptr = s->buffer;
}
-void put_byte(ByteIOContext *s, int b)
+void avio_w8(AVIOContext *s, int b)
{
*(s->buf_ptr)++ = b;
if (s->buf_ptr >= s->buf_end)
flush_buffer(s);
}
-void put_buffer(ByteIOContext *s, const unsigned char *buf, int size)
+void ffio_fill(AVIOContext *s, int b, int count)
{
- int len;
+ while (count > 0) {
+ int len = FFMIN(s->buf_end - s->buf_ptr, count);
+ memset(s->buf_ptr, b, len);
+ s->buf_ptr += len;
+
+ if (s->buf_ptr >= s->buf_end)
+ flush_buffer(s);
+ count -= len;
+ }
+}
+
+void avio_write(AVIOContext *s, const unsigned char *buf, int size)
+{
while (size > 0) {
- len = (s->buf_end - s->buf_ptr);
- if (len > size)
- len = size;
+ int len = FFMIN(s->buf_end - s->buf_ptr, size);
memcpy(s->buf_ptr, buf, len);
s->buf_ptr += len;
}
}
-void put_flush_packet(ByteIOContext *s)
+void put_flush_packet(AVIOContext *s)
{
flush_buffer(s);
s->must_flush = 0;
}
-offset_t url_fseek(ByteIOContext *s, offset_t offset, int whence)
+int64_t url_fseek(AVIOContext *s, int64_t offset, int whence)
{
- offset_t offset1;
- offset_t pos= s->pos - (s->write_flag ? 0 : (s->buf_end - s->buffer));
+ int64_t offset1;
+ int64_t pos;
+ int force = whence & AVSEEK_FORCE;
+ whence &= ~AVSEEK_FORCE;
+
+ if(!s)
+ return AVERROR(EINVAL);
+
+ pos = s->pos - (s->write_flag ? 0 : (s->buf_end - s->buffer));
if (whence != SEEK_CUR && whence != SEEK_SET)
return AVERROR(EINVAL);
}
offset1 = offset - pos;
if (!s->must_flush &&
- offset1 >= 0 && offset1 < (s->buf_end - s->buffer)) {
+ offset1 >= 0 && offset1 <= (s->buf_end - s->buffer)) {
/* can do the seek inside the buffer */
s->buf_ptr = s->buffer + offset1;
- } else if(s->is_streamed && !s->write_flag &&
- offset1 >= 0 && offset1 < (s->buf_end - s->buffer) + (1<<16)){
+ } else if ((s->is_streamed ||
+ offset1 <= s->buf_end + SHORT_SEEK_THRESHOLD - s->buffer) &&
+ !s->write_flag && offset1 >= 0 &&
+ (whence != SEEK_END || force)) {
while(s->pos < offset && !s->eof_reached)
fill_buffer(s);
+ if (s->eof_reached)
+ return AVERROR_EOF;
s->buf_ptr = s->buf_end + offset - s->pos;
} else {
- offset_t res = AVERROR(EPIPE);
+ int64_t res;
-#if defined(CONFIG_MUXERS) || defined(CONFIG_NETWORK)
+#if CONFIG_MUXERS || CONFIG_NETWORK
if (s->write_flag) {
flush_buffer(s);
s->must_flush = 1;
- } else
-#endif /* defined(CONFIG_MUXERS) || defined(CONFIG_NETWORK) */
- {
- s->buf_end = s->buffer;
}
- s->buf_ptr = s->buffer;
- if (!s->seek || (res = s->seek(s->opaque, offset, SEEK_SET)) < 0)
+#endif /* CONFIG_MUXERS || CONFIG_NETWORK */
+ if (!s->seek)
+ return AVERROR(EPIPE);
+ if ((res = s->seek(s->opaque, offset, SEEK_SET)) < 0)
return res;
+ if (!s->write_flag)
+ s->buf_end = s->buffer;
+ s->buf_ptr = s->buffer;
s->pos = offset;
}
s->eof_reached = 0;
return offset;
}
-void url_fskip(ByteIOContext *s, offset_t offset)
+int url_fskip(AVIOContext *s, int64_t offset)
{
- url_fseek(s, offset, SEEK_CUR);
+ int64_t ret = url_fseek(s, offset, SEEK_CUR);
+ return ret < 0 ? ret : 0;
}
-offset_t url_ftell(ByteIOContext *s)
+int64_t url_ftell(AVIOContext *s)
{
return url_fseek(s, 0, SEEK_CUR);
}
-offset_t url_fsize(ByteIOContext *s)
+int64_t url_fsize(AVIOContext *s)
{
- offset_t size;
+ int64_t size;
+
+ if(!s)
+ return AVERROR(EINVAL);
if (!s->seek)
- return AVERROR(EPIPE);
+ return AVERROR(ENOSYS);
size = s->seek(s->opaque, 0, AVSEEK_SIZE);
if(size<0){
if ((size = s->seek(s->opaque, -1, SEEK_END)) < 0)
return size;
}
-int url_feof(ByteIOContext *s)
+int url_feof(AVIOContext *s)
{
+ if(!s)
+ return 0;
return s->eof_reached;
}
-int url_ferror(ByteIOContext *s)
+int url_ferror(AVIOContext *s)
{
+ if(!s)
+ return 0;
return s->error;
}
-void put_le32(ByteIOContext *s, unsigned int val)
+void avio_wl32(AVIOContext *s, unsigned int val)
{
- put_byte(s, val);
- put_byte(s, val >> 8);
- put_byte(s, val >> 16);
- put_byte(s, val >> 24);
+ avio_w8(s, val);
+ avio_w8(s, val >> 8);
+ avio_w8(s, val >> 16);
+ avio_w8(s, val >> 24);
}
-void put_be32(ByteIOContext *s, unsigned int val)
+void avio_wb32(AVIOContext *s, unsigned int val)
{
- put_byte(s, val >> 24);
- put_byte(s, val >> 16);
- put_byte(s, val >> 8);
- put_byte(s, val);
+ avio_w8(s, val >> 24);
+ avio_w8(s, val >> 16);
+ avio_w8(s, val >> 8);
+ avio_w8(s, val);
}
-void put_strz(ByteIOContext *s, const char *str)
+#if FF_API_OLD_AVIO
+void put_strz(AVIOContext *s, const char *str)
{
- if (str)
- put_buffer(s, (const unsigned char *) str, strlen(str) + 1);
- else
- put_byte(s, 0);
+ avio_put_str(s, str);
+}
+
+#define GET(name, type) \
+ type get_be ##name(AVIOContext *s) \
+{\
+ return avio_rb ##name(s);\
+}\
+ type get_le ##name(AVIOContext *s) \
+{\
+ return avio_rl ##name(s);\
+}
+
+GET(16, unsigned int)
+GET(24, unsigned int)
+GET(32, unsigned int)
+GET(64, uint64_t)
+
+#undef GET
+
+#define PUT(name, type ) \
+ void put_le ##name(AVIOContext *s, type val)\
+{\
+ avio_wl ##name(s, val);\
+}\
+ void put_be ##name(AVIOContext *s, type val)\
+{\
+ avio_wb ##name(s, val);\
+}
+
+PUT(16, unsigned int)
+PUT(24, unsigned int)
+PUT(32, unsigned int)
+PUT(64, uint64_t)
+#undef PUT
+
+int get_byte(AVIOContext *s)
+{
+ return avio_r8(s);
+}
+int get_buffer(AVIOContext *s, unsigned char *buf, int size)
+{
+ return avio_read(s, buf, size);
+}
+int get_partial_buffer(AVIOContext *s, unsigned char *buf, int size)
+{
+ return ffio_read_partial(s, buf, size);
+}
+void put_byte(AVIOContext *s, int val)
+{
+ avio_w8(s, val);
+}
+void put_buffer(AVIOContext *s, const unsigned char *buf, int size)
+{
+ avio_write(s, buf, size);
+}
+void put_nbyte(AVIOContext *s, int b, int count)
+{
+ ffio_fill(s, b, count);
+}
+
+int url_fopen(AVIOContext **s, const char *filename, int flags)
+{
+ return avio_open(s, filename, flags);
+}
+int url_fclose(AVIOContext *s)
+{
+ return avio_close(s);
+}
+#endif
+
+int avio_put_str(AVIOContext *s, const char *str)
+{
+ int len = 1;
+ if (str) {
+ len += strlen(str);
+ avio_write(s, (const unsigned char *) str, len);
+ } else
+ avio_w8(s, 0);
+ return len;
+}
+
+int avio_put_str16le(AVIOContext *s, const char *str)
+{
+ const uint8_t *q = str;
+ int ret = 0;
+
+ while (*q) {
+ uint32_t ch;
+ uint16_t tmp;
+
+ GET_UTF8(ch, *q++, break;)
+ PUT_UTF16(ch, tmp, avio_wl16(s, tmp);ret += 2;)
+ }
+ avio_wl16(s, 0);
+ ret += 2;
+ return ret;
+}
+
+int ff_get_v_length(uint64_t val){
+ int i=1;
+
+ while(val>>=7)
+ i++;
+
+ return i;
+}
+
+void ff_put_v(AVIOContext *bc, uint64_t val){
+ int i= ff_get_v_length(val);
+
+ while(--i>0)
+ avio_w8(bc, 128 | (val>>(7*i)));
+
+ avio_w8(bc, val&127);
}
-void put_le64(ByteIOContext *s, uint64_t val)
+void avio_wl64(AVIOContext *s, uint64_t val)
{
- put_le32(s, (uint32_t)(val & 0xffffffff));
- put_le32(s, (uint32_t)(val >> 32));
+ avio_wl32(s, (uint32_t)(val & 0xffffffff));
+ avio_wl32(s, (uint32_t)(val >> 32));
}
-void put_be64(ByteIOContext *s, uint64_t val)
+void avio_wb64(AVIOContext *s, uint64_t val)
{
- put_be32(s, (uint32_t)(val >> 32));
- put_be32(s, (uint32_t)(val & 0xffffffff));
+ avio_wb32(s, (uint32_t)(val >> 32));
+ avio_wb32(s, (uint32_t)(val & 0xffffffff));
}
-void put_le16(ByteIOContext *s, unsigned int val)
+void avio_wl16(AVIOContext *s, unsigned int val)
{
- put_byte(s, val);
- put_byte(s, val >> 8);
+ avio_w8(s, val);
+ avio_w8(s, val >> 8);
}
-void put_be16(ByteIOContext *s, unsigned int val)
+void avio_wb16(AVIOContext *s, unsigned int val)
{
- put_byte(s, val >> 8);
- put_byte(s, val);
+ avio_w8(s, val >> 8);
+ avio_w8(s, val);
}
-void put_le24(ByteIOContext *s, unsigned int val)
+void avio_wl24(AVIOContext *s, unsigned int val)
{
- put_le16(s, val & 0xffff);
- put_byte(s, val >> 16);
+ avio_wl16(s, val & 0xffff);
+ avio_w8(s, val >> 16);
}
-void put_be24(ByteIOContext *s, unsigned int val)
+void avio_wb24(AVIOContext *s, unsigned int val)
{
- put_be16(s, val >> 8);
- put_byte(s, val);
+ avio_wb16(s, val >> 8);
+ avio_w8(s, val);
}
-void put_tag(ByteIOContext *s, const char *tag)
+#if FF_API_OLD_AVIO
+void put_tag(AVIOContext *s, const char *tag)
{
while (*tag) {
- put_byte(s, *tag++);
+ avio_w8(s, *tag++);
}
}
+#endif
/* Input stream */
-static void fill_buffer(ByteIOContext *s)
+static void fill_buffer(AVIOContext *s)
{
- int len=0;
+ uint8_t *dst= !s->max_packet_size && s->buf_end - s->buffer < s->buffer_size ? s->buf_ptr : s->buffer;
+ int len= s->buffer_size - (dst - s->buffer);
+ int max_buffer_size = s->max_packet_size ? s->max_packet_size : IO_BUFFER_SIZE;
/* no need to do anything if EOF already reached */
if (s->eof_reached)
return;
- if(s->update_checksum){
+ if(s->update_checksum && dst == s->buffer){
if(s->buf_end > s->checksum_ptr)
s->checksum= s->update_checksum(s->checksum, s->checksum_ptr, s->buf_end - s->checksum_ptr);
s->checksum_ptr= s->buffer;
}
+ /* make buffer smaller in case it ended up large after probing */
+ if (s->buffer_size > max_buffer_size) {
+ url_setbufsize(s, max_buffer_size);
+
+ s->checksum_ptr = dst = s->buffer;
+ len = s->buffer_size;
+ }
+
if(s->read_packet)
- len = s->read_packet(s->opaque, s->buffer, s->buffer_size);
+ len = s->read_packet(s->opaque, dst, len);
+ else
+ len = 0;
if (len <= 0) {
/* do not modify buffer if EOF reached so that a seek back can
be done without rereading data */
s->error= len;
} else {
s->pos += len;
- s->buf_ptr = s->buffer;
- s->buf_end = s->buffer + len;
+ s->buf_ptr = dst;
+ s->buf_end = dst + len;
}
}
-unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len){
- return av_crc(av_crc04C11DB7, checksum, buf, len);
+unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
+ unsigned int len)
+{
+ return av_crc(av_crc_get_table(AV_CRC_32_IEEE), checksum, buf, len);
}
-unsigned long get_checksum(ByteIOContext *s){
+unsigned long get_checksum(AVIOContext *s)
+{
s->checksum= s->update_checksum(s->checksum, s->checksum_ptr, s->buf_ptr - s->checksum_ptr);
s->update_checksum= NULL;
return s->checksum;
}
-void init_checksum(ByteIOContext *s, unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum){
+void init_checksum(AVIOContext *s,
+ unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
+ unsigned long checksum)
+{
s->update_checksum= update_checksum;
if(s->update_checksum){
s->checksum= checksum;
}
/* XXX: put an inline version */
-int get_byte(ByteIOContext *s)
+int avio_r8(AVIOContext *s)
{
- if (s->buf_ptr < s->buf_end) {
- return *s->buf_ptr++;
- } else {
+ if (s->buf_ptr >= s->buf_end)
fill_buffer(s);
- if (s->buf_ptr < s->buf_end)
- return *s->buf_ptr++;
- else
- return 0;
- }
+ if (s->buf_ptr < s->buf_end)
+ return *s->buf_ptr++;
+ return 0;
}
-int url_fgetc(ByteIOContext *s)
+int url_fgetc(AVIOContext *s)
{
- if (s->buf_ptr < s->buf_end) {
- return *s->buf_ptr++;
- } else {
+ if (s->buf_ptr >= s->buf_end)
fill_buffer(s);
- if (s->buf_ptr < s->buf_end)
- return *s->buf_ptr++;
- else
- return URL_EOF;
- }
+ if (s->buf_ptr < s->buf_end)
+ return *s->buf_ptr++;
+ return URL_EOF;
}
-int get_buffer(ByteIOContext *s, unsigned char *buf, int size)
+int avio_read(AVIOContext *s, unsigned char *buf, int size)
{
int len, size1;
size -= len;
}
}
+ if (size1 == size) {
+ if (url_ferror(s)) return url_ferror(s);
+ if (url_feof(s)) return AVERROR_EOF;
+ }
return size1 - size;
}
-int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size)
+int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size)
{
int len;
len = size;
memcpy(buf, s->buf_ptr, len);
s->buf_ptr += len;
+ if (!len) {
+ if (url_ferror(s)) return url_ferror(s);
+ if (url_feof(s)) return AVERROR_EOF;
+ }
return len;
}
-unsigned int get_le16(ByteIOContext *s)
+unsigned int avio_rl16(AVIOContext *s)
{
unsigned int val;
- val = get_byte(s);
- val |= get_byte(s) << 8;
+ val = avio_r8(s);
+ val |= avio_r8(s) << 8;
return val;
}
-unsigned int get_le24(ByteIOContext *s)
+unsigned int avio_rl24(AVIOContext *s)
{
unsigned int val;
- val = get_le16(s);
- val |= get_byte(s) << 16;
+ val = avio_rl16(s);
+ val |= avio_r8(s) << 16;
return val;
}
-unsigned int get_le32(ByteIOContext *s)
+unsigned int avio_rl32(AVIOContext *s)
{
unsigned int val;
- val = get_le16(s);
- val |= get_le16(s) << 16;
+ val = avio_rl16(s);
+ val |= avio_rl16(s) << 16;
return val;
}
-uint64_t get_le64(ByteIOContext *s)
+uint64_t avio_rl64(AVIOContext *s)
{
uint64_t val;
- val = (uint64_t)get_le32(s);
- val |= (uint64_t)get_le32(s) << 32;
+ val = (uint64_t)avio_rl32(s);
+ val |= (uint64_t)avio_rl32(s) << 32;
return val;
}
-unsigned int get_be16(ByteIOContext *s)
+unsigned int avio_rb16(AVIOContext *s)
{
unsigned int val;
- val = get_byte(s) << 8;
- val |= get_byte(s);
+ val = avio_r8(s) << 8;
+ val |= avio_r8(s);
return val;
}
-unsigned int get_be24(ByteIOContext *s)
+unsigned int avio_rb24(AVIOContext *s)
{
unsigned int val;
- val = get_be16(s) << 8;
- val |= get_byte(s);
+ val = avio_rb16(s) << 8;
+ val |= avio_r8(s);
return val;
}
-unsigned int get_be32(ByteIOContext *s)
+unsigned int avio_rb32(AVIOContext *s)
{
unsigned int val;
- val = get_be16(s) << 16;
- val |= get_be16(s);
+ val = avio_rb16(s) << 16;
+ val |= avio_rb16(s);
return val;
}
-char *get_strz(ByteIOContext *s, char *buf, int maxlen)
+char *get_strz(AVIOContext *s, char *buf, int maxlen)
{
int i = 0;
char c;
- while ((c = get_byte(s))) {
+ while ((c = avio_r8(s))) {
if (i < maxlen-1)
buf[i++] = c;
}
return buf;
}
-uint64_t get_be64(ByteIOContext *s)
+int ff_get_line(AVIOContext *s, char *buf, int maxlen)
+{
+ int i = 0;
+ char c;
+
+ do {
+ c = avio_r8(s);
+ if (c && i < maxlen-1)
+ buf[i++] = c;
+ } while (c != '\n' && c);
+
+ buf[i] = 0;
+ return i;
+}
+
+#define GET_STR16(type, read) \
+ int avio_get_str16 ##type(AVIOContext *pb, int maxlen, char *buf, int buflen)\
+{\
+ char* q = buf;\
+ int ret = 0;\
+ while (ret + 1 < maxlen) {\
+ uint8_t tmp;\
+ uint32_t ch;\
+ GET_UTF16(ch, (ret += 2) <= maxlen ? read(pb) : 0, break;)\
+ if (!ch)\
+ break;\
+ PUT_UTF8(ch, tmp, if (q - buf < buflen - 1) *q++ = tmp;)\
+ }\
+ *q = 0;\
+ return ret;\
+}\
+
+GET_STR16(le, avio_rl16)
+GET_STR16(be, avio_rb16)
+
+#undef GET_STR16
+
+uint64_t avio_rb64(AVIOContext *s)
{
uint64_t val;
- val = (uint64_t)get_be32(s) << 32;
- val |= (uint64_t)get_be32(s);
+ val = (uint64_t)avio_rb32(s) << 32;
+ val |= (uint64_t)avio_rb32(s);
return val;
}
-uint64_t ff_get_v(ByteIOContext *bc){
+uint64_t ff_get_v(AVIOContext *bc){
uint64_t val = 0;
int tmp;
do{
- tmp = get_byte(bc);
+ tmp = avio_r8(bc);
val= (val<<7) + (tmp&127);
}while(tmp&128);
return val;
}
-/* link with avio functions */
-
-#ifdef CONFIG_MUXERS
-static int url_write_packet(void *opaque, uint8_t *buf, int buf_size)
-{
- URLContext *h = opaque;
- return url_write(h, buf, buf_size);
-}
-#else
-#define url_write_packet NULL
-#endif //CONFIG_MUXERS
-
-static int url_read_packet(void *opaque, uint8_t *buf, int buf_size)
-{
- URLContext *h = opaque;
- return url_read(h, buf, buf_size);
-}
-
-static offset_t url_seek_packet(void *opaque, offset_t offset, int whence)
-{
- URLContext *h = opaque;
- return url_seek(h, offset, whence);
- //return 0;
-}
-
-int url_fdopen(ByteIOContext *s, URLContext *h)
+int url_fdopen(AVIOContext **s, URLContext *h)
{
uint8_t *buffer;
int buffer_size, max_packet_size;
-
max_packet_size = url_get_max_packet_size(h);
if (max_packet_size) {
buffer_size = max_packet_size; /* no need to bufferize more than one packet */
if (!buffer)
return AVERROR(ENOMEM);
- if (init_put_byte(s, buffer, buffer_size,
+ *s = av_mallocz(sizeof(AVIOContext));
+ if(!*s) {
+ av_free(buffer);
+ return AVERROR(ENOMEM);
+ }
+
+ if (ffio_init_context(*s, buffer, buffer_size,
(h->flags & URL_WRONLY || h->flags & URL_RDWR), h,
- url_read_packet, url_write_packet, url_seek_packet) < 0) {
+ url_read, url_write, url_seek) < 0) {
av_free(buffer);
+ av_freep(s);
return AVERROR(EIO);
}
- s->is_streamed = h->is_streamed;
- s->max_packet_size = max_packet_size;
+ (*s)->is_streamed = h->is_streamed;
+ (*s)->max_packet_size = max_packet_size;
+ if(h->prot) {
+ (*s)->read_pause = (int (*)(void *, int))h->prot->url_read_pause;
+ (*s)->read_seek = (int64_t (*)(void *, int, int64_t, int))h->prot->url_read_seek;
+ }
return 0;
}
-int url_setbufsize(ByteIOContext *s, int buf_size)
+int url_setbufsize(AVIOContext *s, int buf_size)
{
uint8_t *buffer;
buffer = av_malloc(buf_size);
return 0;
}
-int url_resetbuf(ByteIOContext *s, int flags)
+#if FF_API_URL_RESETBUF
+int url_resetbuf(AVIOContext *s, int flags)
+#else
+static int url_resetbuf(AVIOContext *s, int flags)
+#endif
{
- URLContext *h = s->opaque;
- if ((flags & URL_RDWR) || (h && h->flags != flags && !h->flags & URL_RDWR))
+#if FF_API_URL_RESETBUF
+ if (flags & URL_RDWR)
return AVERROR(EINVAL);
+#else
+ assert(flags == URL_WRONLY || flags == URL_RDONLY);
+#endif
if (flags & URL_WRONLY) {
s->buf_end = s->buffer + s->buffer_size;
return 0;
}
-int url_fopen(ByteIOContext *s, const char *filename, int flags)
+int ff_rewind_with_probe_data(AVIOContext *s, unsigned char *buf, int buf_size)
+{
+ int64_t buffer_start;
+ int buffer_size;
+ int overlap, new_size, alloc_size;
+
+ if (s->write_flag)
+ return AVERROR(EINVAL);
+
+ buffer_size = s->buf_end - s->buffer;
+
+ /* the buffers must touch or overlap */
+ if ((buffer_start = s->pos - buffer_size) > buf_size)
+ return AVERROR(EINVAL);
+
+ overlap = buf_size - buffer_start;
+ new_size = buf_size + buffer_size - overlap;
+
+ alloc_size = FFMAX(s->buffer_size, new_size);
+ if (alloc_size > buf_size)
+ if (!(buf = av_realloc(buf, alloc_size)))
+ return AVERROR(ENOMEM);
+
+ if (new_size > buf_size) {
+ memcpy(buf + buf_size, s->buffer + overlap, buffer_size - overlap);
+ buf_size = new_size;
+ }
+
+ av_free(s->buffer);
+ s->buf_ptr = s->buffer = buf;
+ s->buffer_size = alloc_size;
+ s->pos = buf_size;
+ s->buf_end = s->buf_ptr + buf_size;
+ s->eof_reached = 0;
+ s->must_flush = 0;
+
+ return 0;
+}
+
+int avio_open(AVIOContext **s, const char *filename, int flags)
{
URLContext *h;
int err;
return 0;
}
-int url_fclose(ByteIOContext *s)
+int avio_close(AVIOContext *s)
{
URLContext *h = s->opaque;
av_free(s->buffer);
- memset(s, 0, sizeof(ByteIOContext));
+ av_free(s);
return url_close(h);
}
-URLContext *url_fileno(ByteIOContext *s)
+URLContext *url_fileno(AVIOContext *s)
{
return s->opaque;
}
-#ifdef CONFIG_MUXERS
-int url_fprintf(ByteIOContext *s, const char *fmt, ...)
+#if CONFIG_MUXERS
+int url_fprintf(AVIOContext *s, const char *fmt, ...)
{
va_list ap;
char buf[4096];
va_start(ap, fmt);
ret = vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
- put_buffer(s, buf, strlen(buf));
+ avio_write(s, buf, strlen(buf));
return ret;
}
#endif //CONFIG_MUXERS
-char *url_fgets(ByteIOContext *s, char *buf, int buf_size)
+char *url_fgets(AVIOContext *s, char *buf, int buf_size)
{
int c;
char *q;
return buf;
}
-int url_fget_max_packet_size(ByteIOContext *s)
+int url_fget_max_packet_size(AVIOContext *s)
{
return s->max_packet_size;
}
+int av_url_read_fpause(AVIOContext *s, int pause)
+{
+ if (!s->read_pause)
+ return AVERROR(ENOSYS);
+ return s->read_pause(s->opaque, pause);
+}
+
+int64_t av_url_read_fseek(AVIOContext *s, int stream_index,
+ int64_t timestamp, int flags)
+{
+ URLContext *h = s->opaque;
+ int64_t ret;
+ if (!s->read_seek)
+ return AVERROR(ENOSYS);
+ ret = s->read_seek(h, stream_index, timestamp, flags);
+ if(ret >= 0) {
+ int64_t pos;
+ s->buf_ptr = s->buf_end; // Flush buffer
+ pos = s->seek(h, 0, SEEK_CUR);
+ if (pos >= 0)
+ s->pos = pos;
+ else if (pos != AVERROR(ENOSYS))
+ ret = pos;
+ }
+ return ret;
+}
+
/* url_open_dyn_buf and url_close_dyn_buf are used in rtp.c to send a response
- * back to the server even if CONFIG_MUXERS is not set. */
-#if defined(CONFIG_MUXERS) || defined(CONFIG_NETWORK)
+ * back to the server even if CONFIG_MUXERS is false. */
+#if CONFIG_MUXERS || CONFIG_NETWORK
/* buffer handling */
-int url_open_buf(ByteIOContext *s, uint8_t *buf, int buf_size, int flags)
+int url_open_buf(AVIOContext **s, uint8_t *buf, int buf_size, int flags)
{
- return init_put_byte(s, buf, buf_size,
- (flags & URL_WRONLY || flags & URL_RDWR),
- NULL, NULL, NULL, NULL);
+ int ret;
+ *s = av_mallocz(sizeof(AVIOContext));
+ if(!*s)
+ return AVERROR(ENOMEM);
+ ret = ffio_init_context(*s, buf, buf_size,
+ (flags & URL_WRONLY || flags & URL_RDWR),
+ NULL, NULL, NULL, NULL);
+ if(ret != 0)
+ av_freep(s);
+ return ret;
}
-int url_close_buf(ByteIOContext *s)
+int url_close_buf(AVIOContext *s)
{
put_flush_packet(s);
return s->buf_ptr - s->buffer;
static int dyn_buf_write(void *opaque, uint8_t *buf, int buf_size)
{
DynBuffer *d = opaque;
- int new_size, new_allocated_size;
+ unsigned new_size, new_allocated_size;
/* reallocate buffer if needed */
new_size = d->pos + buf_size;
if (new_allocated_size > d->allocated_size) {
d->buffer = av_realloc(d->buffer, new_allocated_size);
if(d->buffer == NULL)
- return -1234;
+ return AVERROR(ENOMEM);
d->allocated_size = new_allocated_size;
}
memcpy(d->buffer + d->pos, buf, buf_size);
int ret;
/* packetized write: output the header */
- buf1[0] = (buf_size >> 24);
- buf1[1] = (buf_size >> 16);
- buf1[2] = (buf_size >> 8);
- buf1[3] = (buf_size);
+ AV_WB32(buf1, buf_size);
ret= dyn_buf_write(opaque, buf1, 4);
if(ret < 0)
return ret;
return dyn_buf_write(opaque, buf, buf_size);
}
-static offset_t dyn_buf_seek(void *opaque, offset_t offset, int whence)
+static int64_t dyn_buf_seek(void *opaque, int64_t offset, int whence)
{
DynBuffer *d = opaque;
return 0;
}
-static int url_open_dyn_buf_internal(ByteIOContext *s, int max_packet_size)
+static int url_open_dyn_buf_internal(AVIOContext **s, int max_packet_size)
{
DynBuffer *d;
- int io_buffer_size, ret;
-
- if (max_packet_size)
- io_buffer_size = max_packet_size;
- else
- io_buffer_size = 1024;
+ int ret;
+ unsigned io_buffer_size = max_packet_size ? max_packet_size : 1024;
if(sizeof(DynBuffer) + io_buffer_size < io_buffer_size)
return -1;
- d = av_malloc(sizeof(DynBuffer) + io_buffer_size);
+ d = av_mallocz(sizeof(DynBuffer) + io_buffer_size);
if (!d)
- return -1;
+ return AVERROR(ENOMEM);
+ *s = av_mallocz(sizeof(AVIOContext));
+ if(!*s) {
+ av_free(d);
+ return AVERROR(ENOMEM);
+ }
d->io_buffer_size = io_buffer_size;
- d->buffer = NULL;
- d->pos = 0;
- d->size = 0;
- d->allocated_size = 0;
- ret = init_put_byte(s, d->io_buffer, io_buffer_size,
+ ret = ffio_init_context(*s, d->io_buffer, io_buffer_size,
1, d, NULL,
max_packet_size ? dyn_packet_buf_write : dyn_buf_write,
max_packet_size ? NULL : dyn_buf_seek);
if (ret == 0) {
- s->max_packet_size = max_packet_size;
+ (*s)->max_packet_size = max_packet_size;
+ } else {
+ av_free(d);
+ av_freep(s);
}
return ret;
}
-int url_open_dyn_buf(ByteIOContext *s)
+int url_open_dyn_buf(AVIOContext **s)
{
return url_open_dyn_buf_internal(s, 0);
}
-int url_open_dyn_packet_buf(ByteIOContext *s, int max_packet_size)
+int url_open_dyn_packet_buf(AVIOContext **s, int max_packet_size)
{
if (max_packet_size <= 0)
return -1;
return url_open_dyn_buf_internal(s, max_packet_size);
}
-int url_close_dyn_buf(ByteIOContext *s, uint8_t **pbuffer)
+int url_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
{
DynBuffer *d = s->opaque;
int size;
+ static const char padbuf[FF_INPUT_BUFFER_PADDING_SIZE] = {0};
+ int padding = 0;
+
+ /* don't attempt to pad fixed-size packet buffers */
+ if (!s->max_packet_size) {
+ avio_write(s, padbuf, sizeof(padbuf));
+ padding = FF_INPUT_BUFFER_PADDING_SIZE;
+ }
put_flush_packet(s);
*pbuffer = d->buffer;
size = d->size;
av_free(d);
- return size;
+ av_free(s);
+ return size - padding;
}
#endif /* CONFIG_MUXERS || CONFIG_NETWORK */
projects / ffmpeg / blobdiff