| /* |
| * Copyright (c) 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.h" |
| |
| #include "libyuv/basic_types.h" |
| #include "libyuv/format_conversion.h" |
| #include "libyuv/planar_functions.h" |
| #include "libyuv/video_common.h" |
| |
| #ifdef __cplusplus |
| namespace libyuv { |
| extern "C" { |
| #endif |
| |
| // Convert I420 to specified format. |
| // TODO(fbarchard): sample_size should be used to ensure the low levels do |
| // not read outside the buffer provided. It is measured in bytes and is the |
| // size of the frame. With MJPEG it is the compressed size of the frame. |
| // TODO(fbarchard): add I400, I444 and RAW support. |
| int ConvertFromI420(const uint8* y, int y_stride, |
| const uint8* u, int u_stride, |
| const uint8* v, int v_stride, |
| uint8* dst_sample, size_t dst_sample_size, |
| int width, int height, |
| uint32 format) { |
| if (y == NULL || u == NULL || v == NULL || dst_sample == NULL) { |
| return -1; |
| } |
| switch (format) { |
| // Single plane formats |
| case FOURCC_YUY2: |
| I420ToYUY2(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 2, |
| width, height); |
| break; |
| case FOURCC_UYVY: |
| I420ToUYVY(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 2, |
| width, height); |
| break; |
| case FOURCC_24BG: |
| I420ToRGB24(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 3, |
| width, height); |
| break; |
| case FOURCC_RAW: |
| I420ToRAW(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 3, |
| width, height); |
| break; |
| case FOURCC_ARGB: |
| I420ToARGB(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 4, |
| width, height); |
| break; |
| case FOURCC_BGRA: |
| I420ToBGRA(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 4, |
| width, height); |
| break; |
| case FOURCC_ABGR: |
| I420ToABGR(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width * 4, |
| width, height); |
| break; |
| #ifdef HAVEI420TOBAYER |
| case FOURCC_BGGR: |
| case FOURCC_RGGB: |
| case FOURCC_GRBG: |
| case FOURCC_GBRG: |
| I420ToBayerRGB(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width, format, |
| width, height); |
| break; |
| #endif |
| case FOURCC_I400: |
| I400Copy(y, y_stride, |
| dst_sample, width, |
| width, height); |
| break; |
| // Triplanar formats |
| case FOURCC_I420: |
| case FOURCC_YV12: { |
| int halfwidth = (width + 1) / 2; |
| int halfheight = (height + 1) / 2; |
| uint8* dst_u; |
| uint8* dst_v; |
| if (format == FOURCC_I420) { |
| dst_u = dst_sample + width * height; |
| dst_v = dst_u + halfwidth * halfheight; |
| } else { |
| dst_v = dst_sample + width * height; |
| dst_u = dst_v + halfwidth * halfheight; |
| } |
| I420Copy(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width, |
| dst_u, halfwidth, |
| dst_v, halfwidth, |
| width, height); |
| break; |
| } |
| case FOURCC_I422: |
| case FOURCC_YV16: { |
| int halfwidth = (width + 1) / 2; |
| uint8* dst_u; |
| uint8* dst_v; |
| if (format == FOURCC_I422) { |
| dst_u = dst_sample + width * height; |
| dst_v = dst_u + halfwidth * height; |
| } else { |
| dst_v = dst_sample + width * height; |
| dst_u = dst_v + halfwidth * height; |
| } |
| I420ToI422(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width, |
| dst_u, halfwidth, |
| dst_v, halfwidth, |
| width, height); |
| break; |
| } |
| case FOURCC_I444: |
| case FOURCC_YV24: { |
| uint8* dst_u; |
| uint8* dst_v; |
| if (format == FOURCC_I444) { |
| dst_u = dst_sample + width * height; |
| dst_v = dst_u + width * height; |
| } else { |
| dst_v = dst_sample + width * height; |
| dst_u = dst_v + width * height; |
| } |
| I420ToI444(y, y_stride, |
| u, u_stride, |
| v, v_stride, |
| dst_sample, width, |
| dst_u, width, |
| dst_v, width, |
| width, height); |
| break; |
| } |
| |
| // Formats not supported - MJPG, biplanar, some rgb formats. |
| default: |
| return -1; // unknown fourcc - return failure code. |
| } |
| return 0; |
| } |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| } // namespace libyuv |
| #endif |