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