package goffmpeg

/*
#include <stdlib.h>
#include "libcffmpeg.h"
*/
import "C"

import "unsafe"

// CloseStream close stream
func (h *GoFFMPEG) CloseStream() {
	C.wrap_fn_close_stream(unsafe.Pointer(libcffmpeg), h.ffmpeg)
}

//GetAVPacket get AVPacket
func (h *GoFFMPEG) GetAVPacket() ([]byte, int, int) {
	var key C.int
	var size C.int

	p := C.wrap_fn_get_avpacket(unsafe.Pointer(libcffmpeg), h.ffmpeg, &size, &key)
	defer C.free(unsafe.Pointer(p))
	if size <= 0 {
		return nil, 0, -1
	}
	d := C.GoBytes(p, size)
	s := int(size)
	k := int(key)

	return d, s, k
}

//GetAVPacket2 get AVPacket
func (h *GoFFMPEG) GetAVPacket2() (unsafe.Pointer, []byte, int, int) {
	var key C.int
	var size C.int

	p := C.wrap_fn_get_avpacket(unsafe.Pointer(libcffmpeg), h.ffmpeg, &size, &key)
	if size <= 0 {
		return nil, nil, 0, -1
	}

	const maxLen = 0x7fffffff
	length := int(size)
	data := (*[maxLen]byte)(unsafe.Pointer(p))[:length:length]

	k := int(key)

	return p, data, length, k
}