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-rw-r--r--qemu/ui/vnc-enc-zrle.c367
1 files changed, 0 insertions, 367 deletions
diff --git a/qemu/ui/vnc-enc-zrle.c b/qemu/ui/vnc-enc-zrle.c
deleted file mode 100644
index 5489870e7..000000000
--- a/qemu/ui/vnc-enc-zrle.c
+++ /dev/null
@@ -1,367 +0,0 @@
-/*
- * QEMU VNC display driver: Zlib Run-length Encoding (ZRLE)
- *
- * From libvncserver/libvncserver/zrle.c
- * Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
- * Copyright (C) 2003 Sun Microsystems, Inc.
- *
- * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-#include "vnc.h"
-#include "vnc-enc-zrle.h"
-
-static const int bits_per_packed_pixel[] = {
- 0, 1, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4
-};
-
-
-static void vnc_zrle_start(VncState *vs)
-{
- buffer_reset(&vs->zrle.zrle);
-
- /* make the output buffer be the zlib buffer, so we can compress it later */
- vs->zrle.tmp = vs->output;
- vs->output = vs->zrle.zrle;
-}
-
-static void vnc_zrle_stop(VncState *vs)
-{
- /* switch back to normal output/zlib buffers */
- vs->zrle.zrle = vs->output;
- vs->output = vs->zrle.tmp;
-}
-
-static void *zrle_convert_fb(VncState *vs, int x, int y, int w, int h,
- int bpp)
-{
- Buffer tmp;
-
- buffer_reset(&vs->zrle.fb);
- buffer_reserve(&vs->zrle.fb, w * h * bpp + bpp);
-
- tmp = vs->output;
- vs->output = vs->zrle.fb;
-
- vnc_raw_send_framebuffer_update(vs, x, y, w, h);
-
- vs->zrle.fb = vs->output;
- vs->output = tmp;
- return vs->zrle.fb.buffer;
-}
-
-static int zrle_compress_data(VncState *vs, int level)
-{
- z_streamp zstream = &vs->zrle.stream;
-
- buffer_reset(&vs->zrle.zlib);
-
- if (zstream->opaque != vs) {
- int err;
-
- zstream->zalloc = vnc_zlib_zalloc;
- zstream->zfree = vnc_zlib_zfree;
-
- err = deflateInit2(zstream, level, Z_DEFLATED, MAX_WBITS,
- MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY);
-
- if (err != Z_OK) {
- fprintf(stderr, "VNC: error initializing zlib\n");
- return -1;
- }
-
- zstream->opaque = vs;
- }
-
- /* reserve memory in output buffer */
- buffer_reserve(&vs->zrle.zlib, vs->zrle.zrle.offset + 64);
-
- /* set pointers */
- zstream->next_in = vs->zrle.zrle.buffer;
- zstream->avail_in = vs->zrle.zrle.offset;
- zstream->next_out = vs->zrle.zlib.buffer + vs->zrle.zlib.offset;
- zstream->avail_out = vs->zrle.zlib.capacity - vs->zrle.zlib.offset;
- zstream->data_type = Z_BINARY;
-
- /* start encoding */
- if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
- fprintf(stderr, "VNC: error during zrle compression\n");
- return -1;
- }
-
- vs->zrle.zlib.offset = vs->zrle.zlib.capacity - zstream->avail_out;
- return vs->zrle.zlib.offset;
-}
-
-/* Try to work out whether to use RLE and/or a palette. We do this by
- * estimating the number of bytes which will be generated and picking the
- * method which results in the fewest bytes. Of course this may not result
- * in the fewest bytes after compression... */
-static void zrle_choose_palette_rle(VncState *vs, int w, int h,
- VncPalette *palette, int bpp_out,
- int runs, int single_pixels,
- int zywrle_level,
- bool *use_rle, bool *use_palette)
-{
- size_t estimated_bytes;
- size_t plain_rle_bytes;
-
- *use_palette = *use_rle = false;
-
- estimated_bytes = w * h * (bpp_out / 8); /* start assuming raw */
-
- if (bpp_out != 8) {
- if (zywrle_level > 0 && !(zywrle_level & 0x80))
- estimated_bytes >>= zywrle_level;
- }
-
- plain_rle_bytes = ((bpp_out / 8) + 1) * (runs + single_pixels);
-
- if (plain_rle_bytes < estimated_bytes) {
- *use_rle = true;
- estimated_bytes = plain_rle_bytes;
- }
-
- if (palette_size(palette) < 128) {
- int palette_rle_bytes;
-
- palette_rle_bytes = (bpp_out / 8) * palette_size(palette);
- palette_rle_bytes += 2 * runs + single_pixels;
-
- if (palette_rle_bytes < estimated_bytes) {
- *use_rle = true;
- *use_palette = true;
- estimated_bytes = palette_rle_bytes;
- }
-
- if (palette_size(palette) < 17) {
- int packed_bytes;
-
- packed_bytes = (bpp_out / 8) * palette_size(palette);
- packed_bytes += w * h *
- bits_per_packed_pixel[palette_size(palette)-1] / 8;
-
- if (packed_bytes < estimated_bytes) {
- *use_rle = false;
- *use_palette = true;
- estimated_bytes = packed_bytes;
- }
- }
- }
-}
-
-static void zrle_write_u32(VncState *vs, uint32_t value)
-{
- vnc_write(vs, (uint8_t *)&value, 4);
-}
-
-static void zrle_write_u24a(VncState *vs, uint32_t value)
-{
- vnc_write(vs, (uint8_t *)&value, 3);
-}
-
-static void zrle_write_u24b(VncState *vs, uint32_t value)
-{
- vnc_write(vs, ((uint8_t *)&value) + 1, 3);
-}
-
-static void zrle_write_u16(VncState *vs, uint16_t value)
-{
- vnc_write(vs, (uint8_t *)&value, 2);
-}
-
-static void zrle_write_u8(VncState *vs, uint8_t value)
-{
- vnc_write_u8(vs, value);
-}
-
-#define ENDIAN_LITTLE 0
-#define ENDIAN_BIG 1
-#define ENDIAN_NO 2
-
-#define ZRLE_BPP 8
-#define ZYWRLE_ENDIAN ENDIAN_NO
-#include "vnc-enc-zrle-template.c"
-#undef ZRLE_BPP
-
-#define ZRLE_BPP 15
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_LITTLE
-#include "vnc-enc-zrle-template.c"
-
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_BIG
-#include "vnc-enc-zrle-template.c"
-
-#undef ZRLE_BPP
-#define ZRLE_BPP 16
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_LITTLE
-#include "vnc-enc-zrle-template.c"
-
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_BIG
-#include "vnc-enc-zrle-template.c"
-
-#undef ZRLE_BPP
-#define ZRLE_BPP 32
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_LITTLE
-#include "vnc-enc-zrle-template.c"
-
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_BIG
-#include "vnc-enc-zrle-template.c"
-
-#define ZRLE_COMPACT_PIXEL 24a
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_LITTLE
-#include "vnc-enc-zrle-template.c"
-
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_BIG
-#include "vnc-enc-zrle-template.c"
-
-#undef ZRLE_COMPACT_PIXEL
-#define ZRLE_COMPACT_PIXEL 24b
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_LITTLE
-#include "vnc-enc-zrle-template.c"
-
-#undef ZYWRLE_ENDIAN
-#define ZYWRLE_ENDIAN ENDIAN_BIG
-#include "vnc-enc-zrle-template.c"
-#undef ZRLE_COMPACT_PIXEL
-#undef ZRLE_BPP
-
-static int zrle_send_framebuffer_update(VncState *vs, int x, int y,
- int w, int h)
-{
- bool be = vs->client_be;
- size_t bytes;
- int zywrle_level;
-
- if (vs->zrle.type == VNC_ENCODING_ZYWRLE) {
- if (!vs->vd->lossy || vs->tight.quality == (uint8_t)-1
- || vs->tight.quality == 9) {
- zywrle_level = 0;
- vs->zrle.type = VNC_ENCODING_ZRLE;
- } else if (vs->tight.quality < 3) {
- zywrle_level = 3;
- } else if (vs->tight.quality < 6) {
- zywrle_level = 2;
- } else {
- zywrle_level = 1;
- }
- } else {
- zywrle_level = 0;
- }
-
- vnc_zrle_start(vs);
-
- switch (vs->client_pf.bytes_per_pixel) {
- case 1:
- zrle_encode_8ne(vs, x, y, w, h, zywrle_level);
- break;
-
- case 2:
- if (vs->client_pf.gmax > 0x1F) {
- if (be) {
- zrle_encode_16be(vs, x, y, w, h, zywrle_level);
- } else {
- zrle_encode_16le(vs, x, y, w, h, zywrle_level);
- }
- } else {
- if (be) {
- zrle_encode_15be(vs, x, y, w, h, zywrle_level);
- } else {
- zrle_encode_15le(vs, x, y, w, h, zywrle_level);
- }
- }
- break;
-
- case 4:
- {
- bool fits_in_ls3bytes;
- bool fits_in_ms3bytes;
-
- fits_in_ls3bytes =
- ((vs->client_pf.rmax << vs->client_pf.rshift) < (1 << 24) &&
- (vs->client_pf.gmax << vs->client_pf.gshift) < (1 << 24) &&
- (vs->client_pf.bmax << vs->client_pf.bshift) < (1 << 24));
-
- fits_in_ms3bytes = (vs->client_pf.rshift > 7 &&
- vs->client_pf.gshift > 7 &&
- vs->client_pf.bshift > 7);
-
- if ((fits_in_ls3bytes && !be) || (fits_in_ms3bytes && be)) {
- if (be) {
- zrle_encode_24abe(vs, x, y, w, h, zywrle_level);
- } else {
- zrle_encode_24ale(vs, x, y, w, h, zywrle_level);
- }
- } else if ((fits_in_ls3bytes && be) || (fits_in_ms3bytes && !be)) {
- if (be) {
- zrle_encode_24bbe(vs, x, y, w, h, zywrle_level);
- } else {
- zrle_encode_24ble(vs, x, y, w, h, zywrle_level);
- }
- } else {
- if (be) {
- zrle_encode_32be(vs, x, y, w, h, zywrle_level);
- } else {
- zrle_encode_32le(vs, x, y, w, h, zywrle_level);
- }
- }
- }
- break;
- }
-
- vnc_zrle_stop(vs);
- bytes = zrle_compress_data(vs, Z_DEFAULT_COMPRESSION);
- vnc_framebuffer_update(vs, x, y, w, h, vs->zrle.type);
- vnc_write_u32(vs, bytes);
- vnc_write(vs, vs->zrle.zlib.buffer, vs->zrle.zlib.offset);
- return 1;
-}
-
-int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
-{
- vs->zrle.type = VNC_ENCODING_ZRLE;
- return zrle_send_framebuffer_update(vs, x, y, w, h);
-}
-
-int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
-{
- vs->zrle.type = VNC_ENCODING_ZYWRLE;
- return zrle_send_framebuffer_update(vs, x, y, w, h);
-}
-
-void vnc_zrle_clear(VncState *vs)
-{
- if (vs->zrle.stream.opaque) {
- deflateEnd(&vs->zrle.stream);
- }
- buffer_free(&vs->zrle.zrle);
- buffer_free(&vs->zrle.fb);
- buffer_free(&vs->zrle.zlib);
-}