#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;
} \
static av_always_inline type bytestream2_get_ ## name(GetByteContext *g) \
{ \
- if (g->buffer_end - g->buffer < bytes) \
+ if (g->buffer_end - g->buffer < bytes) { \
+ g->buffer = g->buffer_end; \
return 0; \
+ } \
return bytestream2_get_ ## name ## u(g); \
} \
static av_always_inline type bytestream2_peek_ ## name(GetByteContext *g) \
return (int)(p->buffer - p->buffer_start);
}
+static av_always_inline int bytestream2_size(GetByteContext *g)
+{
+ return (int)(g->buffer_end - g->buffer_start);
+}
+
+static av_always_inline int bytestream2_size_p(PutByteContext *p)
+{
+ return (int)(p->buffer_end - p->buffer_start);
+}
+
static av_always_inline int bytestream2_seek(GetByteContext *g,
int offset,
int whence)
return p->eof;
}
+static av_always_inline unsigned int bytestream2_copy_bufferu(PutByteContext *p,
+ GetByteContext *g,
+ unsigned int size)
+{
+ memcpy(p->buffer, g->buffer, size);
+ p->buffer += size;
+ g->buffer += size;
+ return size;
+}
+
+static av_always_inline unsigned int bytestream2_copy_buffer(PutByteContext *p,
+ GetByteContext *g,
+ unsigned int size)
+{
+ int size2;
+
+ if (p->eof)
+ return 0;
+ size = FFMIN(g->buffer_end - g->buffer, size);
+ size2 = FFMIN(p->buffer_end - p->buffer, size);
+ if (size2 != size)
+ p->eof = 1;
+
+ return bytestream2_copy_bufferu(p, g, size2);
+}
+
static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b,
uint8_t *dst,
unsigned int size)