mirror of
https://github.com/samuelncui/yatm.git
synced 2026-11-08 12:26:33 +00:00
Samuel Cui
4fef653b71
Unify file queries and Scan execution, retain indexed Identical results, improve Job and Preview workflows, and verify release packaging.
55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
package main
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/*
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#cgo pkg-config: libavcodec libavutil
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#include <libavcodec/avcodec.h>
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#include <libavutil/avutil.h>
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#include <libavutil/display.h>
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#include <libavutil/mem.h>
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static void configure_decoder(AVCodecContext *ctx, int64_t pixels, int keyframes) {
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ctx->max_pixels = pixels;
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if (keyframes) ctx->skip_frame = AVDISCARD_NONKEY;
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}
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static int64_t frame_timestamp(AVFrame *frame) { return frame->best_effort_timestamp; }
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static int frame_decode_errors(AVFrame *frame) { return frame->decode_error_flags; }
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static int frame_rotation(AVFrame *frame, double *angle) {
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AVFrameSideData *data = av_frame_get_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX);
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if (!data || data->size < 9 * sizeof(int32_t)) return 0;
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*angle = -av_display_rotation_get((const int32_t *)data->data);
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return 1;
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}
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*/
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import "C"
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import "github.com/asticode/go-astiav"
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func configureDecoder(codec *astiav.CodecContext, pixels int64, keyframes bool) {
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key := 0
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if keyframes {
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key = 1
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}
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C.configure_decoder((*C.AVCodecContext)(codec.UnsafePointer()), C.int64_t(pixels), C.int(key))
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}
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func flushDecoder(codec *astiav.CodecContext) {
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C.avcodec_flush_buffers((*C.AVCodecContext)(codec.UnsafePointer()))
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}
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func frameTimestamp(frame *astiav.Frame) int64 {
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return int64(C.frame_timestamp((*C.AVFrame)(frame.UnsafePointer())))
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}
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func frameDecodeErrors(frame *astiav.Frame) int {
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return int(C.frame_decode_errors((*C.AVFrame)(frame.UnsafePointer())))
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}
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func frameRotation(frame *astiav.Frame) (float64, bool) {
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var angle C.double
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present := C.frame_rotation((*C.AVFrame)(frame.UnsafePointer()), &angle)
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return float64(angle), present != 0
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}
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func nativeVersion() string { return C.GoString(C.av_version_info()) }
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func limitNativeAllocation() { C.av_max_alloc(256 << 20) }
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