2023-10-13 20:52:26 CST W41D5

avutil_samplefmt.go

@@ -0,0 +1,131 @@
+package ffmpeg
+
+/*
+#include <libavutil/samplefmt.h>
+*/
+import "C"
+import "unsafe"
+
+// AvSampleFormat
+type AvSampleFormat int32
+
+const (
+	AV_SAMPLE_FMT_NONE = AvSampleFormat(C.AV_SAMPLE_FMT_NONE)
+	AV_SAMPLE_FMT_U8   = AvSampleFormat(C.AV_SAMPLE_FMT_U8)
+	AV_SAMPLE_FMT_S16  = AvSampleFormat(C.AV_SAMPLE_FMT_S16)
+	AV_SAMPLE_FMT_S32  = AvSampleFormat(C.AV_SAMPLE_FMT_S32)
+	AV_SAMPLE_FMT_FLT  = AvSampleFormat(C.AV_SAMPLE_FMT_FLT)
+	AV_SAMPLE_FMT_DBL  = AvSampleFormat(C.AV_SAMPLE_FMT_DBL)
+	AV_SAMPLE_FMT_U8P  = AvSampleFormat(C.AV_SAMPLE_FMT_U8P)
+	AV_SAMPLE_FMT_S16P = AvSampleFormat(C.AV_SAMPLE_FMT_S16P)
+	AV_SAMPLE_FMT_S32P = AvSampleFormat(C.AV_SAMPLE_FMT_S32P)
+	AV_SAMPLE_FMT_FLTP = AvSampleFormat(C.AV_SAMPLE_FMT_FLTP)
+	AV_SAMPLE_FMT_DBLP = AvSampleFormat(C.AV_SAMPLE_FMT_DBLP)
+	AV_SAMPLE_FMT_S64  = AvSampleFormat(C.AV_SAMPLE_FMT_S64)
+	AV_SAMPLE_FMT_S64P = AvSampleFormat(C.AV_SAMPLE_FMT_S64P)
+	AV_SAMPLE_FMT_NB   = AvSampleFormat(C.AV_SAMPLE_FMT_NB)
+)
+
+// AvGetSampleFmtName returns the name of sample_fmt, or NULL if sample_fmt is not
+// recognized.
+func AvGetSampleFmtName(sampleFmt AvSampleFormat) string {
+	return C.GoString(C.av_get_sample_fmt_name((C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvGetSampleFmt returns a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
+// on error.
+func AvGetSampleFmt(name string) AvSampleFormat {
+	namePtr, nameFunc := StringCasting(name)
+	defer nameFunc()
+	return (AvSampleFormat)(C.av_get_sample_fmt((*C.char)(namePtr)))
+}
+
+// AvGetAltSampleFmt returns the planar<->packed alternative form of the given sample format, or
+// AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the
+// requested planar/packed format, the format returned is the same as the
+// input.
+func AvGetAltSampleFmt(sampleFmt AvSampleFormat, planar int32) AvSampleFormat {
+	return (AvSampleFormat)(C.av_get_alt_sample_fmt((C.enum_AVSampleFormat)(sampleFmt), C.int(planar)))
+}
+
+// AvGetPackedSampleFmt gets the packed alternative form of the given sample format.
+func AvGetPackedSampleFmt(sampleFmt AvSampleFormat) AvSampleFormat {
+	return (AvSampleFormat)(C.av_get_packed_sample_fmt((C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvGetPlanarSampleFmt gets the planar alternative form of the given sample format.
+func AvGetPlanarSampleFmt(sampleFmt AvSampleFormat) AvSampleFormat {
+	return (AvSampleFormat)(C.av_get_planar_sample_fmt((C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvGetSampleFmtString generates a string corresponding to the sample format with
+// sample_fmt, or a header if sample_fmt is negative.
+func AvGetSampleFmtString(buf *int8, bufSize int32, sampleFmt AvSampleFormat) string {
+	return C.GoString(C.av_get_sample_fmt_string((*C.char)(buf), (C.int)(bufSize),
+		(C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvGetBytesPerSample returns number of bytes per sample.
+func AvGetBytesPerSample(sampleFmt AvSampleFormat) int32 {
+	return (int32)(C.av_get_bytes_per_sample((C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvSampleFmtIsPlanar checks if the sample format is planar.
+func AvSampleFmtIsPlanar(sampleFmt AvSampleFormat) int32 {
+	return (int32)(C.av_sample_fmt_is_planar((C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvSamplesGetBufferSize gets the required buffer size for the given audio parameters.
+func AvSamplesGetBufferSize(linesize *int32, nbChannels, nbSamples int32,
+	sampleFmt AvSampleFormat, align int32) int32 {
+	return (int32)(C.av_samples_get_buffer_size((*C.int)(linesize), (C.int)(nbChannels),
+		(C.int)(nbSamples), (C.enum_AVSampleFormat)(sampleFmt), (C.int)(align)))
+}
+
+// AvSamplesFillArrays fills plane data pointers and linesize for samples with sample
+// format sample_fmt.
+func AvSamplesFillArrays(audioData **uint8, linesize *int32,
+	buf *uint8, nbChannels, nbSamples int32,
+	sampleFmt AvSampleFormat, align int32) int32 {
+	return (int32)(C.av_samples_fill_arrays((**C.uint8_t)(unsafe.Pointer(audioData)),
+		(*C.int)(linesize), (*C.uint8_t)(buf),
+		(C.int)(nbChannels), (C.int)(nbSamples),
+		(C.enum_AVSampleFormat)(sampleFmt), (C.int)(align)))
+}
+
+// AvSamplesAlloc allocates a samples buffer for nb_samples samples, and fill data pointers and
+// linesize accordingly.
+func AvSamplesAlloc(audioData **uint8, linesize *int32,
+	nbChannels, nbSamples int32,
+	sampleFmt AvSampleFormat, align int32) int32 {
+	return (int32)(C.av_samples_alloc((**C.uint8_t)(unsafe.Pointer(audioData)),
+		(*C.int)(linesize),
+		(C.int)(nbChannels), (C.int)(nbSamples),
+		(C.enum_AVSampleFormat)(sampleFmt), (C.int)(align)))
+}
+
+// AvSamplesAllocArrayAndSamples allocates a data pointers array, samples buffer for nb_samples
+// samples, and fill data pointers and linesize accordingly.
+func AvSamplesAllocArrayAndSamples(audioData ***uint8, linesize *int32, nbChannels, nbSamples int32,
+	sampleFmt AvSampleFormat, align int32) int32 {
+	return (int32)(C.av_samples_alloc_array_and_samples((***C.uint8_t)(unsafe.Pointer(audioData)),
+		(*C.int)(linesize), (C.int)(nbChannels), (C.int)(nbSamples),
+		(C.enum_AVSampleFormat)(sampleFmt), (C.int)(align)))
+}
+
+// AvSamplesCopy copies samples from src to dst.
+func AvSamplesCopy(dst, src **uint8, dstOffset, srcOffset int32,
+	nbSamples, nbChannels int32, sampleFmt AvSampleFormat) int32 {
+	return (int32)(C.av_samples_copy((**C.uint8_t)(unsafe.Pointer(dst)),
+		(**C.uint8_t)(unsafe.Pointer(src)),
+		(C.int)(dstOffset), (C.int)(srcOffset),
+		(C.int)(nbSamples), (C.int)(nbChannels),
+		(C.enum_AVSampleFormat)(sampleFmt)))
+}
+
+// AvSamplesSetSilence fills an audio buffer with silence.
+func AvSamplesSetSilence(audioData **uint8, offset int32,
+	nbSamples, nbChannels int32, sampleFmt AvSampleFormat) int32 {
+	return (int32)(C.av_samples_set_silence((**C.uint8_t)(unsafe.Pointer(audioData)), (C.int)(offset),
+		(C.int)(nbSamples), (C.int)(nbChannels), (C.enum_AVSampleFormat)(sampleFmt)))
+}