#ifndef AVCODEC_BYTESTREAM_H
#define AVCODEC_BYTESTREAM_H
+#include <stdint.h>
#include <string.h>
+
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
-typedef struct {
+typedef struct GetByteContext {
const uint8_t *buffer, *buffer_end, *buffer_start;
} GetByteContext;
-typedef struct {
+typedef struct PutByteContext {
uint8_t *buffer, *buffer_end, *buffer_start;
int eof;
} PutByteContext;
-#define DEF_T(type, name, bytes, read, write) \
-static av_always_inline type bytestream_get_ ## name(const uint8_t **b){\
- (*b) += bytes;\
- return read(*b - bytes);\
-}\
-static av_always_inline void bytestream_put_ ##name(uint8_t **b, const type value){\
- write(*b, value);\
- (*b) += bytes;\
-}\
-static av_always_inline void bytestream2_put_ ## name ## u(PutByteContext *p, const type value)\
-{\
- bytestream_put_ ## name(&p->buffer, value);\
-}\
-static av_always_inline void bytestream2_put_ ## name(PutByteContext *p, const type value){\
- if (!p->eof && (p->buffer_end - p->buffer >= bytes)) {\
- write(p->buffer, value);\
- p->buffer += bytes;\
- } else\
- p->eof = 1;\
-}\
-static av_always_inline type bytestream2_get_ ## name ## u(GetByteContext *g)\
-{\
- return bytestream_get_ ## name(&g->buffer);\
-}\
-static av_always_inline type bytestream2_get_ ## name(GetByteContext *g)\
-{\
- if (g->buffer_end - g->buffer < bytes)\
- return 0;\
- return bytestream2_get_ ## name ## u(g);\
-}\
-static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g)\
-{\
- if (g->buffer_end - g->buffer < bytes)\
- return 0;\
- return read(g->buffer);\
+#define DEF(type, name, bytes, read, write) \
+static av_always_inline type bytestream_get_ ## name(const uint8_t **b) \
+{ \
+ (*b) += bytes; \
+ return read(*b - bytes); \
+} \
+static av_always_inline void bytestream_put_ ## name(uint8_t **b, \
+ const type value) \
+{ \
+ write(*b, value); \
+ (*b) += bytes; \
+} \
+static av_always_inline void bytestream2_put_ ## name ## u(PutByteContext *p, \
+ const type value) \
+{ \
+ bytestream_put_ ## name(&p->buffer, value); \
+} \
+static av_always_inline void bytestream2_put_ ## name(PutByteContext *p, \
+ const type value) \
+{ \
+ if (!p->eof && (p->buffer_end - p->buffer >= bytes)) { \
+ write(p->buffer, value); \
+ p->buffer += bytes; \
+ } else \
+ p->eof = 1; \
+} \
+static av_always_inline type bytestream2_get_ ## name ## u(GetByteContext *g) \
+{ \
+ return bytestream_get_ ## name(&g->buffer); \
+} \
+static av_always_inline type bytestream2_get_ ## name(GetByteContext *g) \
+{ \
+ if (g->buffer_end - g->buffer < bytes) \
+ return 0; \
+ return bytestream2_get_ ## name ## u(g); \
+} \
+static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g) \
+{ \
+ if (g->buffer_end - g->buffer < bytes) \
+ return 0; \
+ return read(g->buffer); \
}
-#define DEF(name, bytes, read, write) \
- DEF_T(unsigned int, name, bytes, read, write)
-#define DEF64(name, bytes, read, write) \
- DEF_T(uint64_t, name, bytes, read, write)
-
-DEF64(le64, 8, AV_RL64, AV_WL64)
-DEF (le32, 4, AV_RL32, AV_WL32)
-DEF (le24, 3, AV_RL24, AV_WL24)
-DEF (le16, 2, AV_RL16, AV_WL16)
-DEF64(be64, 8, AV_RB64, AV_WB64)
-DEF (be32, 4, AV_RB32, AV_WB32)
-DEF (be24, 3, AV_RB24, AV_WB24)
-DEF (be16, 2, AV_RB16, AV_WB16)
-DEF (byte, 1, AV_RB8 , AV_WB8 )
-
-#undef DEF
-#undef DEF64
-#undef DEF_T
+DEF(uint64_t, le64, 8, AV_RL64, AV_WL64)
+DEF(unsigned int, le32, 4, AV_RL32, AV_WL32)
+DEF(unsigned int, le24, 3, AV_RL24, AV_WL24)
+DEF(unsigned int, le16, 2, AV_RL16, AV_WL16)
+DEF(uint64_t, be64, 8, AV_RB64, AV_WB64)
+DEF(unsigned int, be32, 4, AV_RB32, AV_WB32)
+DEF(unsigned int, be24, 3, AV_RB24, AV_WB24)
+DEF(unsigned int, be16, 2, AV_RB16, AV_WB16)
+DEF(unsigned int, byte, 1, AV_RB8 , AV_WB8)
#if HAVE_BIGENDIAN
# define bytestream2_get_ne16 bytestream2_get_be16
#endif
static av_always_inline void bytestream2_init(GetByteContext *g,
- const uint8_t *buf, int buf_size)
+ const uint8_t *buf,
+ int buf_size)
{
- g->buffer = buf;
+ g->buffer = buf;
g->buffer_start = buf;
- g->buffer_end = buf + buf_size;
+ g->buffer_end = buf + buf_size;
}
static av_always_inline void bytestream2_init_writer(PutByteContext *p,
- uint8_t *buf, int buf_size)
+ uint8_t *buf,
+ int buf_size)
{
p->buffer = buf;
p->buffer_start = buf;
g->buffer += FFMIN(g->buffer_end - g->buffer, size);
}
+static av_always_inline void bytestream2_skipu(GetByteContext *g,
+ unsigned int size)
+{
+ g->buffer += size;
+}
+
static av_always_inline void bytestream2_skip_p(PutByteContext *p,
unsigned int size)
{
return (int)(p->buffer - p->buffer_start);
}
-static av_always_inline int bytestream2_seek(GetByteContext *g, int offset,
+static av_always_inline int bytestream2_seek(GetByteContext *g,
+ int offset,
int whence)
{
switch (whence) {
case SEEK_CUR:
- offset = av_clip(offset, -(g->buffer - g->buffer_start),
- g->buffer_end - g->buffer);
+ offset = av_clip(offset, -(g->buffer - g->buffer_start),
+ g->buffer_end - g->buffer);
g->buffer += offset;
break;
case SEEK_END:
- offset = av_clip(offset, -(g->buffer_end - g->buffer_start), 0);
+ offset = av_clip(offset, -(g->buffer_end - g->buffer_start), 0);
g->buffer = g->buffer_end + offset;
break;
case SEEK_SET:
- offset = av_clip(offset, 0, g->buffer_end - g->buffer_start);
+ offset = av_clip(offset, 0, g->buffer_end - g->buffer_start);
g->buffer = g->buffer_start + offset;
break;
default:
return bytestream2_tell(g);
}
-static av_always_inline int bytestream2_seek_p(PutByteContext *p, int offset,
+static av_always_inline int bytestream2_seek_p(PutByteContext *p,
+ int offset,
int whence)
{
p->eof = 0;
case SEEK_CUR:
if (p->buffer_end - p->buffer < offset)
p->eof = 1;
- offset = av_clip(offset, -(p->buffer - p->buffer_start),
- p->buffer_end - p->buffer);
+ offset = av_clip(offset, -(p->buffer - p->buffer_start),
+ p->buffer_end - p->buffer);
p->buffer += offset;
break;
case SEEK_END:
if (offset > 0)
p->eof = 1;
- offset = av_clip(offset, -(p->buffer_end - p->buffer_start), 0);
+ offset = av_clip(offset, -(p->buffer_end - p->buffer_start), 0);
p->buffer = p->buffer_end + offset;
break;
case SEEK_SET:
if (p->buffer_end - p->buffer_start < offset)
p->eof = 1;
- offset = av_clip(offset, 0, p->buffer_end - p->buffer_start);
+ offset = av_clip(offset, 0, p->buffer_end - p->buffer_start);
p->buffer = p->buffer_start + offset;
break;
default:
return size2;
}
+static av_always_inline unsigned int bytestream2_get_bufferu(GetByteContext *g,
+ uint8_t *dst,
+ unsigned int size)
+{
+ memcpy(dst, g->buffer, size);
+ g->buffer += size;
+ return size;
+}
+
static av_always_inline unsigned int bytestream2_put_buffer(PutByteContext *p,
const uint8_t *src,
unsigned int size)
return size2;
}
+static av_always_inline unsigned int bytestream2_put_bufferu(PutByteContext *p,
+ const uint8_t *src,
+ unsigned int size)
+{
+ memcpy(p->buffer, src, size);
+ p->buffer += size;
+ return size;
+}
+
static av_always_inline void bytestream2_set_buffer(PutByteContext *p,
const uint8_t c,
unsigned int size)
p->buffer += size2;
}
+static av_always_inline void bytestream2_set_bufferu(PutByteContext *p,
+ const uint8_t c,
+ unsigned int size)
+{
+ memset(p->buffer, c, size);
+ p->buffer += size;
+}
+
static av_always_inline unsigned int bytestream2_get_eof(PutByteContext *p)
{
return p->eof;
}
-static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b, uint8_t *dst, unsigned int size)
+static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b,
+ uint8_t *dst,
+ unsigned int size)
{
memcpy(dst, *b, size);
(*b) += size;
return size;
}
-static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
+static av_always_inline void bytestream_put_buffer(uint8_t **b,
+ const uint8_t *src,
+ unsigned int size)
{
memcpy(*b, src, size);
(*b) += size;
projects / ffmpeg / blobdiff