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| package goffmpeg
|
| /*
| #include <stdlib.h>
| #include "libcffmpeg.h"
| */
| import "C"
| import "unsafe"
|
| // BuildDecoder build decoder
| func (h *GoFFMPEG) BuildDecoder() {
| C.wrap_fn_decoder(unsafe.Pointer(libcffmpeg), h.ffmpeg)
| }
|
| // GetYUV get yuv data
| func (h *GoFFMPEG) GetYUV() ([]byte, int, int, int64) {
| var fid C.long
| var length C.int
| var srcW, srcH, srcF C.int
|
| var yuv *C.uchar
| r := C.wrap_fn_decoder_pic(unsafe.Pointer(libcffmpeg), h.ffmpeg, &yuv, &srcW, &srcH, &srcF, &length, &fid)
|
| if r < 0 {
| return nil, int(r), int(r), int64(r)
| }
|
| if yuv == nil || length == 0 || srcW == 0 || srcH == 0 {
| return nil, 0, 0, 0
| }
|
| defer C.free(unsafe.Pointer(yuv))
|
| return C.GoBytes(unsafe.Pointer(yuv), length), int(srcW), int(srcH), int64(fid)
| }
|
| // GetYUV2 get yuv data
| func (h *GoFFMPEG) GetYUV2() (unsafe.Pointer, []byte, int, int, int64) {
| var fid C.long
| var length C.int
| var srcW, srcH, srcF C.int
|
| var yuv *C.uchar
| r := C.wrap_fn_decoder_pic(unsafe.Pointer(libcffmpeg), h.ffmpeg, &yuv, &srcW, &srcH, &srcF, &length, &fid)
|
| if r < 0 {
| return nil, nil, int(r), int(r), int64(r)
| }
|
| if yuv == nil || length == 0 || srcW == 0 || srcH == 0 {
| return nil, nil, 0, 0, 0
| }
|
| const maxLen = 0x7fffffff
| size := int(length)
| data := (*[maxLen]byte)(unsafe.Pointer(yuv))[:size:size]
|
| return unsafe.Pointer(yuv), data, int(srcW), int(srcH), int64(fid)
| }
|
| // SetDecMinDuration min duration
| // 主要是如果解码文件时长太短，可能在sdk收到解码数据前解码进程运行结束，所以设定一个最短的duration
| func (h *GoFFMPEG) SetDecMinDuration(min, max int) {
| C.wrap_fn_rec_duration(unsafe.Pointer(libcffmpeg), h.ffmpeg, C.int(min), C.int(max))
| }
|
|
