89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
#include "neatvnc.h"
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#include "rfb-proto.h"
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#include "vec.h"
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#include "fb.h"
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#include "pixels.h"
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#include <pixman.h>
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int raw_encode_box(struct vec* dst, const struct rfb_pixel_format* dst_fmt,
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const struct nvnc_fb* fb,
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const struct rfb_pixel_format* src_fmt, int x_start,
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int y_start, int stride, int width, int height)
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{
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int rc = -1;
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struct rfb_server_fb_rect rect = {
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.encoding = htonl(RFB_ENCODING_RAW),
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.x = htons(x_start),
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.y = htons(y_start),
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.width = htons(width),
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.height = htons(height),
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};
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rc = vec_append(dst, &rect, sizeof(rect));
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if (rc < 0)
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return -1;
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uint32_t* b = fb->addr;
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int bpp = dst_fmt->bits_per_pixel / 8;
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rc = vec_reserve(dst, width * height * bpp + dst->len);
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if (rc < 0)
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return -1;
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uint8_t* d = dst->data;
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for (int y = y_start; y < y_start + height; ++y) {
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pixel32_to_cpixel(d + dst->len, dst_fmt,
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b + x_start + y * stride, src_fmt,
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bpp, width);
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dst->len += width * bpp;
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}
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return 0;
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}
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int raw_encode_frame(struct vec* dst, const struct rfb_pixel_format* dst_fmt,
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const struct nvnc_fb* src,
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const struct rfb_pixel_format* src_fmt,
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struct pixman_region16* region)
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{
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int rc = -1;
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int n_rects = 0;
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struct pixman_box16* box = pixman_region_rectangles(region, &n_rects);
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if (n_rects > UINT16_MAX) {
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box = pixman_region_extents(region);
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n_rects = 1;
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}
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struct rfb_server_fb_update_msg head = {
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.type = RFB_SERVER_TO_CLIENT_FRAMEBUFFER_UPDATE,
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.n_rects = htons(n_rects),
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};
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rc = vec_reserve(dst, src->width * src->height * 4);
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if (rc < 0)
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return -1;
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rc = vec_append(dst, &head, sizeof(head));
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if (rc < 0)
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return -1;
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for (int i = 0; i < n_rects; ++i) {
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int x = box[i].x1;
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int y = box[i].y1;
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int box_width = box[i].x2 - x;
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int box_height = box[i].y2 - y;
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rc = raw_encode_box(dst, dst_fmt, src, src_fmt, x, y,
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src->width, box_width, box_height);
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if (rc < 0)
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return -1;
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}
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return 0;
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}
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