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zrle: Use vec for tile buffer

tight-png
Andri Yngvason 2019-08-27 20:28:12 +00:00 committed by Andri Yngvason
parent 9787cf5772
commit 09d64dfbe6
2 changed files with 28 additions and 10 deletions
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15
inc/vec.h
View File

@ -1,6 +1,8 @@
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <assert.h>
struct vec {
void* data;
@ -24,6 +26,19 @@ int vec_assign(struct vec* vec, const void* data, size_t size);
int vec_append(struct vec* vec, const void* data, size_t size);
void* vec_append_zero(struct vec* vec, size_t size);
static inline void vec_fast_append_8(struct vec* vec, uint8_t value)
{
assert(vec->len < vec->cap);
((uint8_t*)vec->data)[vec->len++] = value;
}
static inline void vec_fast_append_32(struct vec* vec, uint32_t value)
{
assert(vec->len + sizeof(value) <= vec->cap);
assert(vec->len % sizeof(value) == 0);
((uint32_t*)vec->data)[vec->len] = value;
vec->len += sizeof(value);
}
#define vec_for(elem, vec) \
for (elem = (vec)->data; \

23
src/zrle.c
View File

@ -145,19 +145,23 @@ void pixel32_to_cpixel(uint8_t *restrict dst,
#undef CONVERT_PIXELS
}
void zrle_encode_tile(uint8_t *dst, const struct rfb_pixel_format *dst_fmt,
void zrle_encode_tile(struct vec *dst, const struct rfb_pixel_format *dst_fmt,
const uint32_t *src,
const struct rfb_pixel_format *src_fmt,
int stride, int width, int height)
{
int bytes_per_cpixel = dst_fmt->depth / 8;
dst[0] = 0; /* Sub-encoding is raw pixel data */
vec_clear(dst);
vec_fast_append_8(dst, 0);
for (int y = 0; y < height; ++y)
pixel32_to_cpixel(dst + 1 + width * y * bytes_per_cpixel,
pixel32_to_cpixel(((uint8_t*)dst->data) + 1 + width * y * bytes_per_cpixel,
dst_fmt, src + stride * y,
src_fmt, bytes_per_cpixel, width);
dst->len += bytes_per_cpixel * width * height;
}
int zrle_encode_box(uv_stream_t *stream, const struct rfb_pixel_format *dst_fmt,
@ -171,10 +175,9 @@ int zrle_encode_box(uv_stream_t *stream, const struct rfb_pixel_format *dst_fmt,
z_stream zs = { 0 };
struct vec out;
uint8_t *in;
struct vec in;
in = malloc(chunk_size);
if (!in)
if (vec_init(&in, 1 + bytes_per_cpixel * 64 * 64) < 0)
goto failure;
if (vec_init(&out, bytes_per_cpixel * width * height * 2) < 0)
@ -199,12 +202,12 @@ int zrle_encode_box(uv_stream_t *stream, const struct rfb_pixel_format *dst_fmt,
printf("Encoding tile @ %dx%d. width: %d, height: %d\n", tile_x,
tile_y, tile_width, tile_height);
zrle_encode_tile(in, dst_fmt,
zrle_encode_tile(&in, dst_fmt,
((uint32_t*)src) + tile_x + tile_y * width,
src_fmt, stride, tile_width, tile_height);
zs.next_in = in;
zs.avail_in = 1 + tile_width * tile_height * bytes_per_cpixel;
zs.next_in = in.data;
zs.avail_in = in.len;
int flush = (i == n_tiles - 1) ? Z_FINISH : Z_NO_FLUSH;
@ -239,7 +242,7 @@ int zrle_encode_box(uv_stream_t *stream, const struct rfb_pixel_format *dst_fmt,
r = vnc__write(stream, out.data, out.len - 4, NULL);
failure:
// vec_destroy(&out);
free(in);
vec_destroy(&in);
return r;
#undef CHUNK
}