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https://github.com/asticode/go-astiav.git
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e4be514918
2. Implements a HardwareFramesConstraints method in hardware_device_context to obtain these constraints for a given hardware frames context.
43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
package astiav
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//#include <libavcodec/avcodec.h>
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//#include <libavutil/hwcontext.h>
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import "C"
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import (
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"unsafe"
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)
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// https://ffmpeg.org/doxygen/7.0/structAVHWDeviceContext.html
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type HardwareDeviceContext struct {
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c *C.AVBufferRef
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}
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// https://ffmpeg.org/doxygen/7.0/hwcontext_8c.html#a21fbd088225e4e25c4d9a01b3f5e8c51
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func CreateHardwareDeviceContext(t HardwareDeviceType, device string, options *Dictionary, flags int) (*HardwareDeviceContext, error) {
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hdc := HardwareDeviceContext{}
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deviceC := (*C.char)(nil)
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if device != "" {
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deviceC = C.CString(device)
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defer C.free(unsafe.Pointer(deviceC))
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}
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optionsC := (*C.AVDictionary)(nil)
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if options != nil {
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optionsC = options.c
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}
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if err := newError(C.av_hwdevice_ctx_create(&hdc.c, (C.enum_AVHWDeviceType)(t), deviceC, optionsC, C.int(flags))); err != nil {
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return nil, err
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}
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return &hdc, nil
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}
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// https://ffmpeg.org/doxygen/7.0/hwcontext_8c.html#a80f4c1184e1758150b6d9bc0adf2c1df
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func (hdc *HardwareDeviceContext) HardwareFramesConstraints() *HardwareFramesConstraints {
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return newHardwareFramesConstraintsFromC(C.av_hwdevice_get_hwframe_constraints(hdc.c, nil))
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}
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func (hdc *HardwareDeviceContext) Free() {
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if hdc.c != nil {
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C.av_buffer_unref(&hdc.c)
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}
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}
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