/* * 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 #include "libyuv/convert.h" #include "libyuv/video_common.h" #ifdef __cplusplus namespace libyuv { extern "C" { #endif // Convert camera sample to I420 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 ConvertToI420(const uint8_t* sample, size_t sample_size, 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 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; const int abs_src_height = (src_height < 0) ? -src_height : src_height; // TODO(nisse): Why allow crop_height < 0? const int abs_crop_height = (crop_height < 0) ? -crop_height : crop_height; int r = 0; LIBYUV_BOOL need_buf = (rotation && format != FOURCC_I420 && format != FOURCC_NV12 && format != FOURCC_NV21 && format != FOURCC_YV12) || dst_y == sample; uint8_t* tmp_y = dst_y; uint8_t* tmp_u = dst_u; uint8_t* tmp_v = dst_v; int tmp_y_stride = dst_stride_y; int tmp_u_stride = dst_stride_u; int tmp_v_stride = dst_stride_v; uint8_t* rotate_buffer = NULL; const int inv_crop_height = (src_height < 0) ? -abs_crop_height : abs_crop_height; if (!dst_y || !dst_u || !dst_v || !sample || src_width <= 0 || crop_width <= 0 || src_height == 0 || crop_height == 0) { return -1; } // 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 dst_y is same as source sample, // also enable temporary buffer. if (need_buf) { int y_size = crop_width * abs_crop_height; int uv_size = ((crop_width + 1) / 2) * ((abs_crop_height + 1) / 2); rotate_buffer = (uint8_t*)malloc(y_size + uv_size * 2); /* NOLINT */ if (!rotate_buffer) { return 1; // Out of memory runtime error. } dst_y = rotate_buffer; dst_u = dst_y + y_size; dst_v = dst_u + uv_size; dst_stride_y = crop_width; dst_stride_u = dst_stride_v = ((crop_width + 1) / 2); } switch (format) { // Single plane formats case FOURCC_YUY2: src = sample + (aligned_src_width * crop_y + crop_x) * 2; r = YUY2ToI420(src, aligned_src_width * 2, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_UYVY: src = sample + (aligned_src_width * crop_y + crop_x) * 2; r = UYVYToI420(src, aligned_src_width * 2, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_RGBP: src = sample + (src_width * crop_y + crop_x) * 2; r = RGB565ToI420(src, src_width * 2, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_RGBO: src = sample + (src_width * crop_y + crop_x) * 2; r = ARGB1555ToI420(src, src_width * 2, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_R444: src = sample + (src_width * crop_y + crop_x) * 2; r = ARGB4444ToI420(src, src_width * 2, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_24BG: src = sample + (src_width * crop_y + crop_x) * 3; r = RGB24ToI420(src, src_width * 3, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_RAW: src = sample + (src_width * crop_y + crop_x) * 3; r = RAWToI420(src, src_width * 3, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_ARGB: src = sample + (src_width * crop_y + crop_x) * 4; r = ARGBToI420(src, src_width * 4, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_BGRA: src = sample + (src_width * crop_y + crop_x) * 4; r = BGRAToI420(src, src_width * 4, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_ABGR: src = sample + (src_width * crop_y + crop_x) * 4; r = ABGRToI420(src, src_width * 4, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; case FOURCC_RGBA: src = sample + (src_width * crop_y + crop_x) * 4; r = RGBAToI420(src, src_width * 4, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; // TODO(fbarchard): Add AR30 and AB30 case FOURCC_I400: src = sample + src_width * crop_y + crop_x; r = I400ToI420(src, src_width, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; // Biplanar formats case FOURCC_NV12: src = sample + (src_width * crop_y + crop_x); src_uv = sample + (src_width * abs_src_height) + ((crop_y / 2) * aligned_src_width) + ((crop_x / 2) * 2); r = NV12ToI420Rotate(src, src_width, src_uv, aligned_src_width, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height, rotation); break; case FOURCC_NV21: src = sample + (src_width * crop_y + crop_x); src_uv = sample + (src_width * abs_src_height) + ((crop_y / 2) * aligned_src_width) + ((crop_x / 2) * 2); // Call NV12 but with dst_u and dst_v parameters swapped. r = NV12ToI420Rotate(src, src_width, src_uv, aligned_src_width, dst_y, dst_stride_y, dst_v, dst_stride_v, dst_u, dst_stride_u, crop_width, inv_crop_height, rotation); break; case FOURCC_M420: src = sample + (src_width * crop_y) * 12 / 8 + crop_x; r = M420ToI420(src, src_width, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, 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 = I420Rotate(src_y, src_width, src_u, halfwidth, src_v, halfwidth, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height, rotation); 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 = I422ToI420(src_y, src_width, src_u, halfwidth, src_v, halfwidth, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, 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 = I444ToI420(src_y, src_width, src_u, src_width, src_v, src_width, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, crop_width, inv_crop_height); break; } #ifdef HAVE_JPEG case FOURCC_MJPG: r = MJPGToI420(sample, sample_size, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, 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 = I420Rotate(dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, dst_stride_v, tmp_y, tmp_y_stride, tmp_u, tmp_u_stride, tmp_v, tmp_v_stride, crop_width, abs_crop_height, rotation); } free(rotate_buffer); } return r; } #ifdef __cplusplus } // extern "C" } // namespace libyuv #endif