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Diffstat (limited to 'source/convert_from.cc')
| -rw-r--r-- | source/convert_from.cc | 910 |
1 files changed, 910 insertions, 0 deletions
diff --git a/source/convert_from.cc b/source/convert_from.cc new file mode 100644 index 00000000..e69da9e9 --- /dev/null +++ b/source/convert_from.cc @@ -0,0 +1,910 @@ +/* + * Copyright 2012 The LibYuv Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "libyuv/convert_from.h" + +#include "libyuv/basic_types.h" +#include "libyuv/convert.h" // For I420Copy +#include "libyuv/cpu_id.h" +#include "libyuv/planar_functions.h" +#include "libyuv/rotate.h" +#include "libyuv/row.h" +#include "libyuv/scale.h" // For ScalePlane() +#include "libyuv/video_common.h" + +#ifdef __cplusplus +namespace libyuv { +extern "C" { +#endif + +#define SUBSAMPLE(v, a, s) (v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s) +static __inline int Abs(int v) { + return v >= 0 ? v : -v; +} + +// I420 To any I4xx YUV format with mirroring. +// TODO(fbarchard): Consider kFilterNone for Y, or CopyPlane + +static int I420ToI4xx(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_u, + int dst_stride_u, + uint8_t* dst_v, + int dst_stride_v, + int src_y_width, + int src_y_height, + int dst_uv_width, + int dst_uv_height) { + const int dst_y_width = Abs(src_y_width); + const int dst_y_height = Abs(src_y_height); + const int src_uv_width = SUBSAMPLE(src_y_width, 1, 1); + const int src_uv_height = SUBSAMPLE(src_y_height, 1, 1); + int r; + if (src_y_width == 0 || src_y_height == 0 || dst_uv_width <= 0 || + dst_uv_height <= 0) { + return -1; + } + if (dst_y) { + r = ScalePlane(src_y, src_stride_y, src_y_width, src_y_height, dst_y, + dst_stride_y, dst_y_width, dst_y_height, kFilterBilinear); + if (r != 0) { + return r; + } + } + r = ScalePlane(src_u, src_stride_u, src_uv_width, src_uv_height, dst_u, + dst_stride_u, dst_uv_width, dst_uv_height, kFilterBilinear); + if (r != 0) { + return r; + } + r = ScalePlane(src_v, src_stride_v, src_uv_width, src_uv_height, dst_v, + dst_stride_v, dst_uv_width, dst_uv_height, kFilterBilinear); + return r; +} + +// Convert 8 bit YUV to 10 bit. +LIBYUV_API +int I420ToI010(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int width, + int height) { + int halfwidth = (width + 1) >> 1; + int halfheight = (height + 1) >> 1; + if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 || + height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + halfheight = (height + 1) >> 1; + src_y = src_y + (height - 1) * src_stride_y; + src_u = src_u + (halfheight - 1) * src_stride_u; + src_v = src_v + (halfheight - 1) * src_stride_v; + src_stride_y = -src_stride_y; + src_stride_u = -src_stride_u; + src_stride_v = -src_stride_v; + } + + // Convert Y plane. + Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 1024, width, + height); + // Convert UV planes. + Convert8To16Plane(src_u, src_stride_u, dst_u, dst_stride_u, 1024, halfwidth, + halfheight); + Convert8To16Plane(src_v, src_stride_v, dst_v, dst_stride_v, 1024, halfwidth, + halfheight); + return 0; +} + +// Convert 8 bit YUV to 12 bit. +LIBYUV_API +int I420ToI012(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int width, + int height) { + int halfwidth = (width + 1) >> 1; + int halfheight = (height + 1) >> 1; + if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 || + height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + halfheight = (height + 1) >> 1; + src_y = src_y + (height - 1) * src_stride_y; + src_u = src_u + (halfheight - 1) * src_stride_u; + src_v = src_v + (halfheight - 1) * src_stride_v; + src_stride_y = -src_stride_y; + src_stride_u = -src_stride_u; + src_stride_v = -src_stride_v; + } + + // Convert Y plane. + Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 4096, width, + height); + // Convert UV planes. + Convert8To16Plane(src_u, src_stride_u, dst_u, dst_stride_u, 4096, halfwidth, + halfheight); + Convert8To16Plane(src_v, src_stride_v, dst_v, dst_stride_v, 4096, halfwidth, + halfheight); + return 0; +} + +// 420 chroma is 1/2 width, 1/2 height +// 422 chroma is 1/2 width, 1x height +LIBYUV_API +int I420ToI422(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_u, + int dst_stride_u, + uint8_t* dst_v, + int dst_stride_v, + int width, + int height) { + const int dst_uv_width = (Abs(width) + 1) >> 1; + const int dst_uv_height = Abs(height); + return I420ToI4xx(src_y, src_stride_y, src_u, src_stride_u, src_v, + src_stride_v, dst_y, dst_stride_y, dst_u, dst_stride_u, + dst_v, dst_stride_v, width, height, dst_uv_width, + dst_uv_height); +} + +// 420 chroma is 1/2 width, 1/2 height +// 444 chroma is 1x width, 1x height +LIBYUV_API +int I420ToI444(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_u, + int dst_stride_u, + uint8_t* dst_v, + int dst_stride_v, + int width, + int height) { + const int dst_uv_width = Abs(width); + const int dst_uv_height = Abs(height); + return I420ToI4xx(src_y, src_stride_y, src_u, src_stride_u, src_v, + src_stride_v, dst_y, dst_stride_y, dst_u, dst_stride_u, + dst_v, dst_stride_v, width, height, dst_uv_width, + dst_uv_height); +} + +// 420 chroma to 444 chroma, 10/12 bit version +LIBYUV_API +int I010ToI410(const uint16_t* src_y, + int src_stride_y, + const uint16_t* src_u, + int src_stride_u, + const uint16_t* src_v, + int src_stride_v, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int width, + int height) { + int r; + if (width == 0 || height == 0) { + return -1; + } + + if (dst_y) { + r = ScalePlane_12(src_y, src_stride_y, width, height, dst_y, dst_stride_y, + Abs(width), Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + } + r = ScalePlane_12(src_u, src_stride_u, SUBSAMPLE(width, 1, 1), + SUBSAMPLE(height, 1, 1), dst_u, dst_stride_u, Abs(width), + Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + r = ScalePlane_12(src_v, src_stride_v, SUBSAMPLE(width, 1, 1), + SUBSAMPLE(height, 1, 1), dst_v, dst_stride_v, Abs(width), + Abs(height), kFilterBilinear); + return r; +} + +// 422 chroma to 444 chroma, 10/12 bit version +LIBYUV_API +int I210ToI410(const uint16_t* src_y, + int src_stride_y, + const uint16_t* src_u, + int src_stride_u, + const uint16_t* src_v, + int src_stride_v, + uint16_t* dst_y, + int dst_stride_y, + uint16_t* dst_u, + int dst_stride_u, + uint16_t* dst_v, + int dst_stride_v, + int width, + int height) { + int r; + if (width == 0 || height == 0) { + return -1; + } + + if (dst_y) { + r = ScalePlane_12(src_y, src_stride_y, width, height, dst_y, dst_stride_y, + Abs(width), Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + } + r = ScalePlane_12(src_u, src_stride_u, SUBSAMPLE(width, 1, 1), height, dst_u, + dst_stride_u, Abs(width), Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + r = ScalePlane_12(src_v, src_stride_v, SUBSAMPLE(width, 1, 1), height, dst_v, + dst_stride_v, Abs(width), Abs(height), kFilterBilinear); + return r; +} + +// 422 chroma is 1/2 width, 1x height +// 444 chroma is 1x width, 1x height +LIBYUV_API +int I422ToI444(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_u, + int dst_stride_u, + uint8_t* dst_v, + int dst_stride_v, + int width, + int height) { + int r; + if (width == 0 || height == 0) { + return -1; + } + + if (dst_y) { + r = ScalePlane(src_y, src_stride_y, width, height, dst_y, dst_stride_y, + Abs(width), Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + } + r = ScalePlane(src_u, src_stride_u, SUBSAMPLE(width, 1, 1), height, dst_u, + dst_stride_u, Abs(width), Abs(height), kFilterBilinear); + if (r != 0) { + return r; + } + r = ScalePlane(src_v, src_stride_v, SUBSAMPLE(width, 1, 1), height, dst_v, + dst_stride_v, Abs(width), Abs(height), kFilterBilinear); + return r; +} + +// Copy to I400. Source can be I420,422,444,400,NV12,NV21 +LIBYUV_API +int I400Copy(const uint8_t* src_y, + int src_stride_y, + uint8_t* dst_y, + int dst_stride_y, + int width, + int height) { + if (!src_y || !dst_y || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + src_y = src_y + (height - 1) * src_stride_y; + src_stride_y = -src_stride_y; + } + CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); + return 0; +} + +LIBYUV_API +int I422ToYUY2(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_yuy2, + int dst_stride_yuy2, + int width, + int height) { + int y; + void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u, + const uint8_t* src_v, uint8_t* dst_yuy2, int width) = + I422ToYUY2Row_C; + if (!src_y || !src_u || !src_v || !dst_yuy2 || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2; + dst_stride_yuy2 = -dst_stride_yuy2; + } + // Coalesce rows. + if (src_stride_y == width && src_stride_u * 2 == width && + src_stride_v * 2 == width && dst_stride_yuy2 == width * 2) { + width *= height; + height = 1; + src_stride_y = src_stride_u = src_stride_v = dst_stride_yuy2 = 0; + } +#if defined(HAS_I422TOYUY2ROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + I422ToYUY2Row = I422ToYUY2Row_Any_SSE2; + if (IS_ALIGNED(width, 16)) { + I422ToYUY2Row = I422ToYUY2Row_SSE2; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + I422ToYUY2Row = I422ToYUY2Row_Any_AVX2; + if (IS_ALIGNED(width, 32)) { + I422ToYUY2Row = I422ToYUY2Row_AVX2; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + I422ToYUY2Row = I422ToYUY2Row_Any_NEON; + if (IS_ALIGNED(width, 16)) { + I422ToYUY2Row = I422ToYUY2Row_NEON; + } + } +#endif + + for (y = 0; y < height; ++y) { + I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width); + src_y += src_stride_y; + src_u += src_stride_u; + src_v += src_stride_v; + dst_yuy2 += dst_stride_yuy2; + } + return 0; +} + +LIBYUV_API +int I420ToYUY2(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_yuy2, + int dst_stride_yuy2, + int width, + int height) { + int y; + void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u, + const uint8_t* src_v, uint8_t* dst_yuy2, int width) = + I422ToYUY2Row_C; + if (!src_y || !src_u || !src_v || !dst_yuy2 || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2; + dst_stride_yuy2 = -dst_stride_yuy2; + } +#if defined(HAS_I422TOYUY2ROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + I422ToYUY2Row = I422ToYUY2Row_Any_SSE2; + if (IS_ALIGNED(width, 16)) { + I422ToYUY2Row = I422ToYUY2Row_SSE2; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + I422ToYUY2Row = I422ToYUY2Row_Any_AVX2; + if (IS_ALIGNED(width, 32)) { + I422ToYUY2Row = I422ToYUY2Row_AVX2; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + I422ToYUY2Row = I422ToYUY2Row_Any_NEON; + if (IS_ALIGNED(width, 16)) { + I422ToYUY2Row = I422ToYUY2Row_NEON; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_MSA) + if (TestCpuFlag(kCpuHasMSA)) { + I422ToYUY2Row = I422ToYUY2Row_Any_MSA; + if (IS_ALIGNED(width, 32)) { + I422ToYUY2Row = I422ToYUY2Row_MSA; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_LSX) + if (TestCpuFlag(kCpuHasLSX)) { + I422ToYUY2Row = I422ToYUY2Row_Any_LSX; + if (IS_ALIGNED(width, 16)) { + I422ToYUY2Row = I422ToYUY2Row_LSX; + } + } +#endif +#if defined(HAS_I422TOYUY2ROW_LASX) + if (TestCpuFlag(kCpuHasLASX)) { + I422ToYUY2Row = I422ToYUY2Row_Any_LASX; + if (IS_ALIGNED(width, 32)) { + I422ToYUY2Row = I422ToYUY2Row_LASX; + } + } +#endif + + for (y = 0; y < height - 1; y += 2) { + I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width); + I422ToYUY2Row(src_y + src_stride_y, src_u, src_v, + dst_yuy2 + dst_stride_yuy2, width); + src_y += src_stride_y * 2; + src_u += src_stride_u; + src_v += src_stride_v; + dst_yuy2 += dst_stride_yuy2 * 2; + } + if (height & 1) { + I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width); + } + return 0; +} + +LIBYUV_API +int I422ToUYVY(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_uyvy, + int dst_stride_uyvy, + int width, + int height) { + int y; + void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u, + const uint8_t* src_v, uint8_t* dst_uyvy, int width) = + I422ToUYVYRow_C; + if (!src_y || !src_u || !src_v || !dst_uyvy || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy; + dst_stride_uyvy = -dst_stride_uyvy; + } + // Coalesce rows. + if (src_stride_y == width && src_stride_u * 2 == width && + src_stride_v * 2 == width && dst_stride_uyvy == width * 2) { + width *= height; + height = 1; + src_stride_y = src_stride_u = src_stride_v = dst_stride_uyvy = 0; + } +#if defined(HAS_I422TOUYVYROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + I422ToUYVYRow = I422ToUYVYRow_Any_SSE2; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_SSE2; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + I422ToUYVYRow = I422ToUYVYRow_Any_AVX2; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_AVX2; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + I422ToUYVYRow = I422ToUYVYRow_Any_NEON; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_NEON; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_MSA) + if (TestCpuFlag(kCpuHasMSA)) { + I422ToUYVYRow = I422ToUYVYRow_Any_MSA; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_MSA; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_LSX) + if (TestCpuFlag(kCpuHasLSX)) { + I422ToUYVYRow = I422ToUYVYRow_Any_LSX; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_LSX; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_LASX) + if (TestCpuFlag(kCpuHasLASX)) { + I422ToUYVYRow = I422ToUYVYRow_Any_LASX; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_LASX; + } + } +#endif + + for (y = 0; y < height; ++y) { + I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width); + src_y += src_stride_y; + src_u += src_stride_u; + src_v += src_stride_v; + dst_uyvy += dst_stride_uyvy; + } + return 0; +} + +LIBYUV_API +int I420ToUYVY(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_uyvy, + int dst_stride_uyvy, + int width, + int height) { + int y; + void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u, + const uint8_t* src_v, uint8_t* dst_uyvy, int width) = + I422ToUYVYRow_C; + if (!src_y || !src_u || !src_v || !dst_uyvy || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy; + dst_stride_uyvy = -dst_stride_uyvy; + } +#if defined(HAS_I422TOUYVYROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + I422ToUYVYRow = I422ToUYVYRow_Any_SSE2; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_SSE2; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + I422ToUYVYRow = I422ToUYVYRow_Any_AVX2; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_AVX2; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + I422ToUYVYRow = I422ToUYVYRow_Any_NEON; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_NEON; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_MSA) + if (TestCpuFlag(kCpuHasMSA)) { + I422ToUYVYRow = I422ToUYVYRow_Any_MSA; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_MSA; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_LSX) + if (TestCpuFlag(kCpuHasLSX)) { + I422ToUYVYRow = I422ToUYVYRow_Any_LSX; + if (IS_ALIGNED(width, 16)) { + I422ToUYVYRow = I422ToUYVYRow_LSX; + } + } +#endif +#if defined(HAS_I422TOUYVYROW_LASX) + if (TestCpuFlag(kCpuHasLASX)) { + I422ToUYVYRow = I422ToUYVYRow_Any_LASX; + if (IS_ALIGNED(width, 32)) { + I422ToUYVYRow = I422ToUYVYRow_LASX; + } + } +#endif + + for (y = 0; y < height - 1; y += 2) { + I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width); + I422ToUYVYRow(src_y + src_stride_y, src_u, src_v, + dst_uyvy + dst_stride_uyvy, width); + src_y += src_stride_y * 2; + src_u += src_stride_u; + src_v += src_stride_v; + dst_uyvy += dst_stride_uyvy * 2; + } + if (height & 1) { + I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width); + } + return 0; +} + +LIBYUV_API +int I420ToNV12(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_uv, + int dst_stride_uv, + int width, + int height) { + int halfwidth = (width + 1) / 2; + int halfheight = (height + 1) / 2; + if (!src_y || !src_u || !src_v || !dst_uv || width <= 0 || height == 0) { + return -1; + } + // Negative height means invert the image. + if (height < 0) { + height = -height; + halfheight = (height + 1) >> 1; + src_y = src_y + (height - 1) * src_stride_y; + src_u = src_u + (halfheight - 1) * src_stride_u; + src_v = src_v + (halfheight - 1) * src_stride_v; + src_stride_y = -src_stride_y; + src_stride_u = -src_stride_u; + src_stride_v = -src_stride_v; + } + if (dst_y) { + CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); + } + MergeUVPlane(src_u, src_stride_u, src_v, src_stride_v, dst_uv, dst_stride_uv, + halfwidth, halfheight); + return 0; +} + +LIBYUV_API +int I420ToNV21(const uint8_t* src_y, + int src_stride_y, + const uint8_t* src_u, + int src_stride_u, + const uint8_t* src_v, + int src_stride_v, + uint8_t* dst_y, + int dst_stride_y, + uint8_t* dst_vu, + int dst_stride_vu, + int width, + int height) { + return I420ToNV12(src_y, src_stride_y, src_v, src_stride_v, src_u, + src_stride_u, dst_y, dst_stride_y, dst_vu, dst_stride_vu, + width, height); +} + +// Convert I420 to specified format +LIBYUV_API +int ConvertFromI420(const uint8_t* y, + int y_stride, + const uint8_t* u, + int u_stride, + const uint8_t* v, + int v_stride, + uint8_t* dst_sample, + int dst_sample_stride, + int width, + int height, + uint32_t fourcc) { + uint32_t format = CanonicalFourCC(fourcc); + int r = 0; + if (!y || !u || !v || !dst_sample || width <= 0 || height == 0) { + return -1; + } + switch (format) { + // Single plane formats + case FOURCC_YUY2: + r = I420ToYUY2(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 2, width, + height); + break; + case FOURCC_UYVY: + r = I420ToUYVY(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 2, width, + height); + break; + case FOURCC_RGBP: + r = I420ToRGB565(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 2, width, + height); + break; + case FOURCC_RGBO: + r = I420ToARGB1555(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 2, + width, height); + break; + case FOURCC_R444: + r = I420ToARGB4444(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 2, + width, height); + break; + case FOURCC_24BG: + r = I420ToRGB24(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 3, width, + height); + break; + case FOURCC_RAW: + r = I420ToRAW(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 3, width, + height); + break; + case FOURCC_ARGB: + r = I420ToARGB(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 4, width, + height); + break; + case FOURCC_BGRA: + r = I420ToBGRA(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 4, width, + height); + break; + case FOURCC_ABGR: + r = I420ToABGR(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 4, width, + height); + break; + case FOURCC_RGBA: + r = I420ToRGBA(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 4, width, + height); + break; + case FOURCC_AR30: + r = I420ToAR30(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width * 4, width, + height); + break; + case FOURCC_I400: + r = I400Copy(y, y_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width, width, + height); + break; + case FOURCC_NV12: { + int dst_y_stride = dst_sample_stride ? dst_sample_stride : width; + uint8_t* dst_uv = dst_sample + dst_y_stride * height; + r = I420ToNV12(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width, dst_uv, + dst_sample_stride ? dst_sample_stride : width, width, + height); + break; + } + case FOURCC_NV21: { + int dst_y_stride = dst_sample_stride ? dst_sample_stride : width; + uint8_t* dst_vu = dst_sample + dst_y_stride * height; + r = I420ToNV21(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride ? dst_sample_stride : width, dst_vu, + dst_sample_stride ? dst_sample_stride : width, width, + height); + break; + } + // Triplanar formats + case FOURCC_I420: + case FOURCC_YV12: { + dst_sample_stride = dst_sample_stride ? dst_sample_stride : width; + int halfstride = (dst_sample_stride + 1) / 2; + int halfheight = (height + 1) / 2; + uint8_t* dst_u; + uint8_t* dst_v; + if (format == FOURCC_YV12) { + dst_v = dst_sample + dst_sample_stride * height; + dst_u = dst_v + halfstride * halfheight; + } else { + dst_u = dst_sample + dst_sample_stride * height; + dst_v = dst_u + halfstride * halfheight; + } + r = I420Copy(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride, dst_u, halfstride, dst_v, halfstride, + width, height); + break; + } + case FOURCC_I422: + case FOURCC_YV16: { + dst_sample_stride = dst_sample_stride ? dst_sample_stride : width; + int halfstride = (dst_sample_stride + 1) / 2; + uint8_t* dst_u; + uint8_t* dst_v; + if (format == FOURCC_YV16) { + dst_v = dst_sample + dst_sample_stride * height; + dst_u = dst_v + halfstride * height; + } else { + dst_u = dst_sample + dst_sample_stride * height; + dst_v = dst_u + halfstride * height; + } + r = I420ToI422(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride, dst_u, halfstride, dst_v, halfstride, + width, height); + break; + } + case FOURCC_I444: + case FOURCC_YV24: { + dst_sample_stride = dst_sample_stride ? dst_sample_stride : width; + uint8_t* dst_u; + uint8_t* dst_v; + if (format == FOURCC_YV24) { + dst_v = dst_sample + dst_sample_stride * height; + dst_u = dst_v + dst_sample_stride * height; + } else { + dst_u = dst_sample + dst_sample_stride * height; + dst_v = dst_u + dst_sample_stride * height; + } + r = I420ToI444(y, y_stride, u, u_stride, v, v_stride, dst_sample, + dst_sample_stride, dst_u, dst_sample_stride, dst_v, + dst_sample_stride, width, height); + break; + } + // Formats not supported - MJPG, biplanar, some rgb formats. + default: + return -1; // unknown fourcc - return failure code. + } + return r; +} + +#ifdef __cplusplus +} // extern "C" +} // namespace libyuv +#endif |