ref: a28d43658e3347d55d70655e6ee3d87d0d3fba8a
dir: /third_party/libyuv/source/convert_to_argb.cc/
/* * 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. // TODO(fbarchard): Add the following: // H010ToARGB // H420ToARGB // H422ToARGB // I010ToARGB // J400ToARGB // J422ToARGB // J444ToARGB LIBYUV_API int ConvertToARGB(const uint8_t* sample, size_t sample_size, uint8_t* dst_argb, int dst_stride_argb, int crop_x, int crop_y, int src_width, int src_height, int crop_width, int crop_height, enum RotationMode rotation, uint32_t fourcc) { uint32_t format = CanonicalFourCC(fourcc); int aligned_src_width = (src_width + 1) & ~1; const uint8_t* src; const uint8_t* 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 ARGB (with optional vertical flipping) into a temporary ARGB buffer, // and then rotate the ARGB to the final destination buffer. // For in-place conversion, if destination dst_argb is same as source sample, // also enable temporary buffer. LIBYUV_BOOL need_buf = (rotation && format != FOURCC_ARGB) || dst_argb == sample; uint8_t* dest_argb = dst_argb; int dest_dst_stride_argb = dst_stride_argb; uint8_t* rotate_buffer = NULL; int abs_crop_height = (crop_height < 0) ? -crop_height : crop_height; if (dst_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_t*)malloc(argb_size); /* NOLINT */ if (!rotate_buffer) { return 1; // Out of memory runtime error. } dst_argb = rotate_buffer; dst_stride_argb = 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, dst_argb, dst_stride_argb, 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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_24BG: src = sample + (src_width * crop_y + crop_x) * 3; r = RGB24ToARGB(src, src_width * 3, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_RAW: src = sample + (src_width * crop_y + crop_x) * 3; r = RAWToARGB(src, src_width * 3, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_ARGB: if (!need_buf && !rotation) { src = sample + (src_width * crop_y + crop_x) * 4; r = ARGBToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); } break; case FOURCC_BGRA: src = sample + (src_width * crop_y + crop_x) * 4; r = BGRAToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_ABGR: src = sample + (src_width * crop_y + crop_x) * 4; r = ABGRToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_RGBA: src = sample + (src_width * crop_y + crop_x) * 4; r = RGBAToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_AR30: src = sample + (src_width * crop_y + crop_x) * 4; r = AR30ToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_AB30: src = sample + (src_width * crop_y + crop_x) * 4; r = AB30ToARGB(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_RGBP: src = sample + (src_width * crop_y + crop_x) * 2; r = RGB565ToARGB(src, src_width * 2, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_RGBO: src = sample + (src_width * crop_y + crop_x) * 2; r = ARGB1555ToARGB(src, src_width * 2, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_R444: src = sample + (src_width * crop_y + crop_x) * 2; r = ARGB4444ToARGB(src, src_width * 2, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_I400: src = sample + src_width * crop_y + crop_x; r = I400ToARGB(src, src_width, dst_argb, dst_stride_argb, 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 * (abs_src_height + crop_y / 2) + crop_x; r = NV12ToARGB(src, src_width, src_uv, aligned_src_width, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_NV21: src = sample + (src_width * crop_y + crop_x); src_uv = sample + aligned_src_width * (abs_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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; case FOURCC_M420: src = sample + (src_width * crop_y) * 12 / 8 + crop_x; r = M420ToARGB(src, src_width, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; // Triplanar formats case FOURCC_I420: case FOURCC_YV12: { const uint8_t* src_y = sample + (src_width * crop_y + crop_x); const uint8_t* src_u; const uint8_t* 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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; } case FOURCC_J420: { const uint8_t* src_y = sample + (src_width * crop_y + crop_x); const uint8_t* src_u; const uint8_t* 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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; } case FOURCC_I422: case FOURCC_YV16: { const uint8_t* src_y = sample + src_width * crop_y + crop_x; const uint8_t* src_u; const uint8_t* 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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; } case FOURCC_I444: case FOURCC_YV24: { const uint8_t* src_y = sample + src_width * crop_y + crop_x; const uint8_t* src_u; const uint8_t* 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, dst_argb, dst_stride_argb, crop_width, inv_crop_height); break; } #ifdef HAVE_JPEG case FOURCC_MJPG: r = MJPGToARGB(sample, sample_size, dst_argb, dst_stride_argb, 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(dst_argb, dst_stride_argb, dest_argb, dest_dst_stride_argb, crop_width, abs_crop_height, rotation); } free(rotate_buffer); } else if (rotation) { src = sample + (src_width * crop_y + crop_x) * 4; r = ARGBRotate(src, src_width * 4, dst_argb, dst_stride_argb, crop_width, inv_crop_height, rotation); } return r; } #ifdef __cplusplus } // extern "C" } // namespace libyuv #endif