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send raw if the decoded JPEG data smaller than raw data

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DanyLE 2022-08-17 17:58:27 +02:00
parent 20b07efac4
commit f4f0042283
1 changed files with 25 additions and 13 deletions
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36
wvnc.c
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@ -72,12 +72,10 @@ static long long current_timestamp() {
int jpeg_compress(uint8_t *buff, int w, int h, int quality)
{
uint8_t *tmp_row = NULL;
struct jpeg_compress_struct cinfo = {0};
struct jpeg_error_mgr jerror = {0};
jerror.trace_level = 10;
cinfo.err = jpeg_std_error(&jerror);
jerror.trace_level = 10;
cinfo.err->trace_level = 10;
jpeg_create_compress(&cinfo);
uint8_t *out = NULL;
@ -90,6 +88,11 @@ int jpeg_compress(uint8_t *buff, int w, int h, int quality)
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, true);
jpeg_start_compress(&cinfo, true);
if(!out)
{
ERROR("Unable to allocate output jpeg memory");
return 0;
}
//unsigned counter = 0;
JSAMPROW row_pointer[1];
row_pointer[0] = NULL;
@ -97,15 +100,17 @@ int jpeg_compress(uint8_t *buff, int w, int h, int quality)
{
row_pointer[0] = (JSAMPROW)(&buff[cinfo.next_scanline * w * 4]);
jpeg_write_scanlines(&cinfo, row_pointer, 1);
if (tmp_row)
{
free(tmp_row);
tmp_row = NULL;
}
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
if (outbuffer_size < (unsigned long)(w * h * 4))
{
memcpy(buff, out, outbuffer_size);
}
else
{
outbuffer_size = 0;
}
free(out);
return outbuffer_size;
}
@ -296,18 +301,23 @@ static void finish_update(rfbClient *client)
int x = user_data->ux;
int y = user_data->uy;
int size = cw * ch * 4;
uint8_t *cmd = (uint8_t *)malloc(size + 9); // + 9
uint8_t *tmp = cmd + 9;
uint8_t flag = 0;
uint8_t *cmd = (uint8_t *)malloc(size + 10); // + 9
uint8_t *tmp = cmd + 10;
//LOG("w %d h %d x %d y %d", cw, ch, x, y);
if (!cmd)
if (!cmd || !tmp)
{
vnc_fatal(user_data, "Cannot allocate data for update");
return;
}
if (!client->frameBuffer)
{
LOG("Client frame buffer data not found\n");
LOG("Client frame buffer data not found");
return;
}
if(size == 0)
{
return;
}
uint8_t *dest_ptr = tmp;
@ -335,9 +345,11 @@ static void finish_update(rfbClient *client)
int ret = jpeg_compress(tmp, cw, ch, user_data->quality);
if (ret > 0)
{
flag |= 0x01;
size = ret;
ws_b(user_data->wscl->client, cmd, size + 9);
}
cmd[9] = flag;
ws_b(user_data->wscl->client, cmd, size + 10);
user_data->ux = 0xFFFF;
user_data->uy = 0xFFFF;
user_data->uw = 0;