Exemple #1
0
func (g *Graph) Config() error {
	code := C.avfilter_graph_config(g.CAVFilterGraph, nil)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #2
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func (ctx *Context) WriteTrailer() error {
	code := C.av_write_trailer(ctx.CAVFormatContext)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #3
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func NewContextForOutput(output *Output) (*Context, error) {
	var cCtx *C.AVFormatContext
	code := C.avformat_alloc_output_context2(&cCtx, output.CAVOutputFormat, nil, nil)
	if code < 0 {
		return nil, avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return NewContextFromC(unsafe.Pointer(cCtx)), nil
}
Exemple #4
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func (ctx *Context) Link(srcPad uint, dst *Context, dstPad uint) error {
	cSrc := ctx.CAVFilterContext
	cDst := dst.CAVFilterContext
	code := C.avfilter_link(cSrc, C.uint(srcPad), cDst, C.uint(dstPad))
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #5
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func (ctx *Context) InitWithString(args string) error {
	cArgs := C.CString(args)
	defer C.free(unsafe.Pointer(cArgs))
	code := C.avfilter_init_str(ctx.CAVFilterContext, cArgs)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #6
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func (g *Graph) Parse(filters string, input, output *InOut) error {
	cFilters := C.CString(filters)
	defer C.free(unsafe.Pointer(cFilters))
	cInput := &input.CAVFilterInOut
	cOutput := &output.CAVFilterInOut
	code := C.avfilter_graph_parse_ptr(g.CAVFilterGraph, cFilters, cInput, cOutput, nil)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #7
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func (ctx *Context) WriteFrame(frame *avutil.Frame) error {
	var cFrame *C.AVFrame
	if frame != nil {
		cFrame = (*C.AVFrame)(unsafe.Pointer(frame.CAVFrame))
	}
	code := C.av_buffersrc_write_frame(ctx.CAVFilterContext, cFrame)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #8
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func (ctx *Context) AddFrameWithFlags(frame *avutil.Frame, flags BufferSrcFlags) error {
	var cFrame *C.AVFrame
	if frame != nil {
		cFrame = (*C.AVFrame)(unsafe.Pointer(frame.CAVFrame))
	}
	code := C.av_buffersrc_add_frame_flags(ctx.CAVFilterContext, cFrame, (C.int)(flags))
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #9
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func (ctx *Context) InitWithDictionary(options *avutil.Dictionary) error {
	var cOptions **C.AVDictionary
	if options != nil {
		cOptions = (**C.AVDictionary)(unsafe.Pointer(&options.CAVDictionary))
	}
	code := C.avfilter_init_dict(ctx.CAVFilterContext, cOptions)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #10
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func (ctx *Context) InterleavedWriteFrame(pkt *avcodec.Packet) error {
	var cPkt *C.AVPacket
	if pkt != nil {
		cPkt = (*C.AVPacket)(unsafe.Pointer(&pkt.CAVPacket))
	}
	code := C.av_interleaved_write_frame(ctx.CAVFormatContext, cPkt)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #11
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func (ctx *Context) ReadFrame(pkt *avcodec.Packet) (bool, error) {
	cPkt := (*C.AVPacket)(unsafe.Pointer(&pkt.CAVPacket))
	code := C.av_read_frame(ctx.CAVFormatContext, cPkt)
	if code < 0 {
		if avutil.ErrorCode(code) == avutil.ErrorCodeEOF {
			return false, nil
		}
		return false, avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return true, nil
}
Exemple #12
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func (ctx *Context) WriteHeader(options *avutil.Dictionary) error {
	var cOptions **C.AVDictionary
	if options != nil {
		cOptions = (**C.AVDictionary)(unsafe.Pointer(&options.CAVDictionary))
	}
	code := C.avformat_write_header(ctx.CAVFormatContext, cOptions)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #13
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func (ctx *Context) FindStreamInfo(options []*avutil.Dictionary) error {
	var cOptions **C.AVDictionary
	count := ctx.NumberOfStreams()
	if count > 0 && options != nil {
		if uint(len(options)) < count {
			return ErrInvalidArgumentSize
		}
		cOptions = newCAVDictionaryArrayFromDictionarySlice(options[:count])
		defer freeCAVDictionaryArray(cOptions)
	}
	code := C.avformat_find_stream_info(ctx.CAVFormatContext, cOptions)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #14
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func (ctx *Context) GetFrame(frame *avutil.Frame) (bool, error) {
	var cFrame *C.AVFrame
	if frame != nil {
		cFrame = (*C.AVFrame)(unsafe.Pointer(frame.CAVFrame))
	}
	code := C.av_buffersink_get_frame(ctx.CAVFilterContext, cFrame)
	if code < 0 {
		switch avutil.ErrorCode(code) {
		case avutil.ErrorCode(C.GO_AVERROR(C.EAGAIN)):
			return false, nil
		case avutil.ErrorCodeEOF:
			return false, nil
		}
		return false, avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return true, nil
}
Exemple #15
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func (ctx *Context) OpenInput(fileName string, input *Input, options *avutil.Dictionary) error {
	cFileName := C.CString(fileName)
	defer C.free(unsafe.Pointer(cFileName))
	var cInput *C.AVInputFormat
	if input != nil {
		cInput = input.CAVInputFormat
	}
	var cOptions **C.AVDictionary
	if options != nil {
		cOptions = (**C.AVDictionary)(unsafe.Pointer(&options.CAVDictionary))
	}
	code := C.avformat_open_input(&ctx.CAVFormatContext, cFileName, cInput, cOptions)
	if code < 0 {
		return avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return nil
}
Exemple #16
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func OpenIOContext(url string, flags IOFlags, cb *IOInterruptCallback, options *avutil.Dictionary) (*IOContext, error) {
	cURL := C.CString(url)
	defer C.free(unsafe.Pointer(cURL))
	var cCb *C.AVIOInterruptCB
	if cb != nil {
		cCb = cb.CAVIOInterruptCB
	}
	var cOptions **C.AVDictionary
	if options != nil {
		cOptions = (**C.AVDictionary)(unsafe.Pointer(&options.CAVDictionary))
	}
	var cCtx *C.AVIOContext
	code := C.avio_open2(&cCtx, cURL, (C.int)(flags), cCb, cOptions)
	if code < 0 {
		return nil, avutil.NewErrorFromCode(avutil.ErrorCode(code))
	}
	return NewIOContextFromC(unsafe.Pointer(cCtx)), nil
}