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| package goffmpeg
|
| /*
| #include <stdlib.h>
| #include "libcffmpeg.h"
| */
| import "C"
|
| import "unsafe"
|
| /////////////// for decoder
|
| // Decode decode jpeg file
| // return val: -1 open error; -2, find stream error; -3, converter create error
| func Decode(input string, gb bool) ([]byte, int, int) {
| in := C.CString(input)
| defer C.free(unsafe.Pointer(in))
|
| withGB := 0
| if gb {
| withGB = 1
| }
|
| var width C.int
| var height C.int
| p := C.wrap_fn_decode(unsafe.Pointer(libcffmpeg), in, C.int(withGB), &width, &height)
| defer C.free(p)
|
| if width > 0 && height > 0 {
| data := C.GoBytes(p, width*height*3)
| wid := int(width)
| hei := int(height)
| return data, wid, hei
| }
| return nil, int(width), int(height)
| }
|
| // Decode2 decode jpeg file
| // return val: -1 open error; -2, find stream error; -3, converter create error
| func Decode2(input string, gb bool) (unsafe.Pointer, []byte, int, int) {
| in := C.CString(input)
| defer C.free(unsafe.Pointer(in))
|
| withGB := 0
| if gb {
| withGB = 1
| }
|
| var width C.int
| var height C.int
| p := C.wrap_fn_decode(unsafe.Pointer(libcffmpeg), in, C.int(withGB), &width, &height)
|
| if width > 0 && height > 0 {
| wid := int(width)
| hei := int(height)
| const maxLen = 0x7fffffff
| size := int(width * height * 3)
| data := (*[maxLen]byte)(unsafe.Pointer(p))[:size:size]
|
| return p, data, wid, hei
| }
| return nil, nil, 0, 0
| }
|
|
