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+/*
+ * Copyright 2011 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_argb.h"
+
+#include "libyuv/cpu_id.h"
+#ifdef HAVE_JPEG
+#include "libyuv/mjpeg_decoder.h"
+#endif
+#include "libyuv/rotate_argb.h"
+#include "libyuv/row.h"
+#include "libyuv/video_common.h"
+
+#ifdef __cplusplus
+namespace libyuv {
+extern "C" {
+#endif
+
+// Convert camera sample to ARGB with cropping, rotation and vertical flip.
+// src_width is used for source stride computation
+// src_height is used to compute location of planes, and indicate inversion
+// sample_size is measured in bytes and is the size of the frame.
+// With MJPEG it is the compressed size of the frame.
+LIBYUV_API
+int ConvertToARGB(const uint8* sample, size_t sample_size,
+ uint8* crop_argb, int argb_stride,
+ int crop_x, int crop_y,
+ int src_width, int src_height,
+ int crop_width, int crop_height,
+ enum RotationMode rotation,
+ uint32 fourcc) {
+ uint32 format = CanonicalFourCC(fourcc);
+ int aligned_src_width = (src_width + 1) & ~1;
+ const uint8* src;
+ const uint8* src_uv;
+ int abs_src_height = (src_height < 0) ? -src_height : src_height;
+ int inv_crop_height = (crop_height < 0) ? -crop_height : crop_height;
+ int r = 0;
+
+ // One pass rotation is available for some formats. For the rest, convert
+ // to I420 (with optional vertical flipping) into a temporary I420 buffer,
+ // and then rotate the I420 to the final destination buffer.
+ // For in-place conversion, if destination crop_argb is same as source sample,
+ // also enable temporary buffer.
+ LIBYUV_BOOL need_buf = (rotation && format != FOURCC_ARGB) ||
+ crop_argb == sample;
+ uint8* dest_argb = crop_argb;
+ int dest_argb_stride = argb_stride;
+ uint8* rotate_buffer = NULL;
+ int abs_crop_height = (crop_height < 0) ? -crop_height : crop_height;
+
+ if (crop_argb == NULL || sample == NULL ||
+ src_width <= 0 || crop_width <= 0 ||
+ src_height == 0 || crop_height == 0) {
+ return -1;
+ }
+ if (src_height < 0) {
+ inv_crop_height = -inv_crop_height;
+ }
+
+ if (need_buf) {
+ int argb_size = crop_width * 4 * abs_crop_height;
+ rotate_buffer = (uint8*)malloc(argb_size);
+ if (!rotate_buffer) {
+ return 1; // Out of memory runtime error.
+ }
+ crop_argb = rotate_buffer;
+ argb_stride = crop_width * 4;
+ }
+
+ switch (format) {
+ // Single plane formats
+ case FOURCC_YUY2:
+ src = sample + (aligned_src_width * crop_y + crop_x) * 2;
+ r = YUY2ToARGB(src, aligned_src_width * 2,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_UYVY:
+ src = sample + (aligned_src_width * crop_y + crop_x) * 2;
+ r = UYVYToARGB(src, aligned_src_width * 2,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_24BG:
+ src = sample + (src_width * crop_y + crop_x) * 3;
+ r = RGB24ToARGB(src, src_width * 3,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_RAW:
+ src = sample + (src_width * crop_y + crop_x) * 3;
+ r = RAWToARGB(src, src_width * 3,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_ARGB:
+ src = sample + (src_width * crop_y + crop_x) * 4;
+ r = ARGBToARGB(src, src_width * 4,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_BGRA:
+ src = sample + (src_width * crop_y + crop_x) * 4;
+ r = BGRAToARGB(src, src_width * 4,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_ABGR:
+ src = sample + (src_width * crop_y + crop_x) * 4;
+ r = ABGRToARGB(src, src_width * 4,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_RGBA:
+ src = sample + (src_width * crop_y + crop_x) * 4;
+ r = RGBAToARGB(src, src_width * 4,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_RGBP:
+ src = sample + (src_width * crop_y + crop_x) * 2;
+ r = RGB565ToARGB(src, src_width * 2,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_RGBO:
+ src = sample + (src_width * crop_y + crop_x) * 2;
+ r = ARGB1555ToARGB(src, src_width * 2,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_R444:
+ src = sample + (src_width * crop_y + crop_x) * 2;
+ r = ARGB4444ToARGB(src, src_width * 2,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_I400:
+ src = sample + src_width * crop_y + crop_x;
+ r = I400ToARGB(src, src_width,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+
+ // Biplanar formats
+ case FOURCC_NV12:
+ src = sample + (src_width * crop_y + crop_x);
+ src_uv = sample + aligned_src_width * (src_height + crop_y / 2) + crop_x;
+ r = NV12ToARGB(src, src_width,
+ src_uv, aligned_src_width,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_NV21:
+ src = sample + (src_width * crop_y + crop_x);
+ src_uv = sample + aligned_src_width * (src_height + crop_y / 2) + crop_x;
+ // Call NV12 but with u and v parameters swapped.
+ r = NV21ToARGB(src, src_width,
+ src_uv, aligned_src_width,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ case FOURCC_M420:
+ src = sample + (src_width * crop_y) * 12 / 8 + crop_x;
+ r = M420ToARGB(src, src_width,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ // Triplanar formats
+ case FOURCC_I420:
+ case FOURCC_YV12: {
+ const uint8* src_y = sample + (src_width * crop_y + crop_x);
+ const uint8* src_u;
+ const uint8* src_v;
+ int halfwidth = (src_width + 1) / 2;
+ int halfheight = (abs_src_height + 1) / 2;
+ if (format == FOURCC_YV12) {
+ src_v = sample + src_width * abs_src_height +
+ (halfwidth * crop_y + crop_x) / 2;
+ src_u = sample + src_width * abs_src_height +
+ halfwidth * (halfheight + crop_y / 2) + crop_x / 2;
+ } else {
+ src_u = sample + src_width * abs_src_height +
+ (halfwidth * crop_y + crop_x) / 2;
+ src_v = sample + src_width * abs_src_height +
+ halfwidth * (halfheight + crop_y / 2) + crop_x / 2;
+ }
+ r = I420ToARGB(src_y, src_width,
+ src_u, halfwidth,
+ src_v, halfwidth,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ }
+
+ case FOURCC_J420: {
+ const uint8* src_y = sample + (src_width * crop_y + crop_x);
+ const uint8* src_u;
+ const uint8* src_v;
+ int halfwidth = (src_width + 1) / 2;
+ int halfheight = (abs_src_height + 1) / 2;
+ src_u = sample + src_width * abs_src_height +
+ (halfwidth * crop_y + crop_x) / 2;
+ src_v = sample + src_width * abs_src_height +
+ halfwidth * (halfheight + crop_y / 2) + crop_x / 2;
+ r = J420ToARGB(src_y, src_width,
+ src_u, halfwidth,
+ src_v, halfwidth,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ }
+
+ case FOURCC_I422:
+ case FOURCC_YV16: {
+ const uint8* src_y = sample + src_width * crop_y + crop_x;
+ const uint8* src_u;
+ const uint8* src_v;
+ int halfwidth = (src_width + 1) / 2;
+ if (format == FOURCC_YV16) {
+ src_v = sample + src_width * abs_src_height +
+ halfwidth * crop_y + crop_x / 2;
+ src_u = sample + src_width * abs_src_height +
+ halfwidth * (abs_src_height + crop_y) + crop_x / 2;
+ } else {
+ src_u = sample + src_width * abs_src_height +
+ halfwidth * crop_y + crop_x / 2;
+ src_v = sample + src_width * abs_src_height +
+ halfwidth * (abs_src_height + crop_y) + crop_x / 2;
+ }
+ r = I422ToARGB(src_y, src_width,
+ src_u, halfwidth,
+ src_v, halfwidth,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ }
+ case FOURCC_I444:
+ case FOURCC_YV24: {
+ const uint8* src_y = sample + src_width * crop_y + crop_x;
+ const uint8* src_u;
+ const uint8* src_v;
+ if (format == FOURCC_YV24) {
+ src_v = sample + src_width * (abs_src_height + crop_y) + crop_x;
+ src_u = sample + src_width * (abs_src_height * 2 + crop_y) + crop_x;
+ } else {
+ src_u = sample + src_width * (abs_src_height + crop_y) + crop_x;
+ src_v = sample + src_width * (abs_src_height * 2 + crop_y) + crop_x;
+ }
+ r = I444ToARGB(src_y, src_width,
+ src_u, src_width,
+ src_v, src_width,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ }
+ case FOURCC_I411: {
+ int quarterwidth = (src_width + 3) / 4;
+ const uint8* src_y = sample + src_width * crop_y + crop_x;
+ const uint8* src_u = sample + src_width * abs_src_height +
+ quarterwidth * crop_y + crop_x / 4;
+ const uint8* src_v = sample + src_width * abs_src_height +
+ quarterwidth * (abs_src_height + crop_y) + crop_x / 4;
+ r = I411ToARGB(src_y, src_width,
+ src_u, quarterwidth,
+ src_v, quarterwidth,
+ crop_argb, argb_stride,
+ crop_width, inv_crop_height);
+ break;
+ }
+#ifdef HAVE_JPEG
+ case FOURCC_MJPG:
+ r = MJPGToARGB(sample, sample_size,
+ crop_argb, argb_stride,
+ src_width, abs_src_height, crop_width, inv_crop_height);
+ break;
+#endif
+ default:
+ r = -1; // unknown fourcc - return failure code.
+ }
+
+ if (need_buf) {
+ if (!r) {
+ r = ARGBRotate(crop_argb, argb_stride,
+ dest_argb, dest_argb_stride,
+ crop_width, abs_crop_height, rotation);
+ }
+ free(rotate_buffer);
+ }
+
+ return r;
+}
+
+#ifdef __cplusplus
+} // extern "C"
+} // namespace libyuv
+#endif
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