124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
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#ifndef _mov_ioutil_h_
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#define _mov_ioutil_h_
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#include "mov-buffer.h"
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struct mov_ioutil_t
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{
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struct mov_buffer_t io;
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void* param;
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int error;
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};
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static inline int mov_buffer_error(const struct mov_ioutil_t* io)
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{
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return io->error;
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}
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static inline uint64_t mov_buffer_tell(const struct mov_ioutil_t* io)
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{
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int64_t v;
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v = io->io.tell(io->param);
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if (v < 0)
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((struct mov_ioutil_t*)io)->error = -1;
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return v;
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}
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static inline void mov_buffer_seek(const struct mov_ioutil_t* io, int64_t offset)
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{
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// if (0 == io->error)
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((struct mov_ioutil_t*)io)->error = io->io.seek(io->param, offset);
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}
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static inline void mov_buffer_skip(struct mov_ioutil_t* io, uint64_t bytes)
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{
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uint64_t offset;
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if (0 == io->error)
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{
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offset = io->io.tell(io->param);
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io->error = io->io.seek(io->param, offset + bytes);
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}
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}
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static inline void mov_buffer_read(struct mov_ioutil_t* io, void* data, uint64_t bytes)
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{
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if (0 == io->error)
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io->error = io->io.read(io->param, data, bytes);
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}
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static inline void mov_buffer_write(const struct mov_ioutil_t* io, const void* data, uint64_t bytes)
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{
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if (0 == io->error)
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((struct mov_ioutil_t*)io)->error = io->io.write(io->param, data, bytes);
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}
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static inline uint8_t mov_buffer_r8(struct mov_ioutil_t* io)
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{
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uint8_t v = 0;
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mov_buffer_read(io, &v, 1);
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return v;
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}
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static inline uint16_t mov_buffer_r16(struct mov_ioutil_t* io)
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{
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uint16_t v;
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v = mov_buffer_r8(io);
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v = (v << 8) | mov_buffer_r8(io);
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return v;
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}
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static inline uint32_t mov_buffer_r24(struct mov_ioutil_t* io)
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{
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uint32_t v;
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v = mov_buffer_r8(io);
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v = (v << 16) | mov_buffer_r16(io);
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return v;
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}
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static inline uint32_t mov_buffer_r32(struct mov_ioutil_t* io)
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{
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uint32_t v;
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v = mov_buffer_r16(io);
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v = (v << 16) | mov_buffer_r16(io);
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return v;
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}
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static inline uint64_t mov_buffer_r64(struct mov_ioutil_t* io)
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{
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uint64_t v;
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v = mov_buffer_r32(io);
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v = (v << 32) | mov_buffer_r32(io);
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return v;
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}
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static inline void mov_buffer_w8(const struct mov_ioutil_t* io, uint8_t v)
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{
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mov_buffer_write(io, &v, 1);
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}
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static inline void mov_buffer_w16(const struct mov_ioutil_t* io, uint16_t v)
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{
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mov_buffer_w8(io, (uint8_t)(v >> 8));
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mov_buffer_w8(io, (uint8_t)v);
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}
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static inline void mov_buffer_w24(const struct mov_ioutil_t* io, uint32_t v)
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{
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mov_buffer_w16(io, (uint16_t)(v >> 8));
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mov_buffer_w8(io, (uint8_t)v);
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}
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static inline void mov_buffer_w32(const struct mov_ioutil_t* io, uint32_t v)
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{
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mov_buffer_w16(io, (uint16_t)(v >> 16));
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mov_buffer_w16(io, (uint16_t)v);
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}
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static inline void mov_buffer_w64(const struct mov_ioutil_t* io, uint64_t v)
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{
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mov_buffer_w32(io, (uint32_t)(v >> 32));
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mov_buffer_w32(io, (uint32_t)v);
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}
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#endif /* !_mov_ioutil_h_ */
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