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tight: Implement quality control

pull/30/head
Andri Yngvason 2020-04-03 19:56:44 +00:00
parent 17e0d6036f
commit 25626a9048
4 changed files with 57 additions and 4 deletions
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2
include/rfb-proto.h
View File

@ -57,6 +57,8 @@ enum rfb_encodings {
RFB_ENCODING_ZRLE = 16,
RFB_ENCODING_CURSOR = -239,
RFB_ENCODING_DESKTOPSIZE = -223,
RFB_ENCODING_JPEG_HIGHQ = -23,
RFB_ENCODING_JPEG_LOWQ = -32,
};
enum rfb_server_to_client_msg_type {

8
include/tight.h
View File

@ -24,8 +24,16 @@ struct nvnc_fb;
struct pixman_region16;
struct rfb_pixel_format;
enum tight_quality {
TIGHT_QUALITY_UNSPEC = 0,
TIGHT_QUALITY_LOSSLESS,
TIGHT_QUALITY_LOW,
TIGHT_QUALITY_HIGH,
};
struct tight_encoder {
z_stream zs[4];
enum tight_quality quality;
};
int tight_encoder_init(struct tight_encoder*);

2
src/server.c
View File

@ -449,6 +449,8 @@ static int on_client_set_encodings(struct nvnc_client* client)
case RFB_ENCODING_ZRLE:
case RFB_ENCODING_CURSOR:
case RFB_ENCODING_DESKTOPSIZE:
case RFB_ENCODING_JPEG_HIGHQ:
case RFB_ENCODING_JPEG_LOWQ:
client->encodings[n++] = encoding;
}
}

49
src/tight.c
View File

@ -38,6 +38,27 @@
#define TIGHT_MAX_WIDTH 2048
enum tight_quality tight_get_quality(struct tight_encoder* self)
{
struct nvnc_client* client =
container_of(self, struct nvnc_client, tight_encoder);
/* Note: The standard specifies that 16 is OK too, but we can only
* handle 32
*/
if (client->pixfmt.bits_per_pixel != 32)
return TIGHT_QUALITY_LOSSLESS;
for (size_t i = 0; i < client->n_encodings; ++i)
switch (client->encodings[i]) {
case RFB_ENCODING_JPEG_HIGHQ: return TIGHT_QUALITY_HIGH;
case RFB_ENCODING_JPEG_LOWQ: return TIGHT_QUALITY_LOW;
default:;
}
return TIGHT_QUALITY_LOSSLESS;
}
int tight_init_zstream(z_stream* zx)
{
int rc = deflateInit2(zx,
@ -103,7 +124,14 @@ int tight_encode_box_jpeg(struct tight_encoder* self, struct vec* dst,
unsigned char* buffer = NULL;
size_t size = 0;
int quality = 50; /* 1 - 100 */
int quality; /* 1 - 100 */
switch (self->quality) {
case TIGHT_QUALITY_HIGH: quality = 66; break;
case TIGHT_QUALITY_LOW: quality = 33; break;
default: abort();
}
enum TJPF tjfmt = get_jpeg_pixfmt(fb->fourcc_format);
if (tjfmt == TJPF_UNKNOWN)
return -1;
@ -179,7 +207,6 @@ int tight_encode_box_basic(struct tight_encoder* self, struct vec* dst,
uint32_t x, uint32_t y_start,
uint32_t stride, uint32_t width, uint32_t height)
{
printf("Encode %u %u %u %u\n", x, y_start, width, height);
struct nvnc_client* client =
container_of(self, struct nvnc_client, tight_encoder);
@ -248,8 +275,22 @@ int tight_encode_box(struct tight_encoder* self, struct vec* dst,
uint32_t x, uint32_t y,
uint32_t stride, uint32_t width, uint32_t height)
{
// return tight_encode_box_basic(self, dst, fb, src_fmt, x, y, stride, width, height);
return tight_encode_box_jpeg(self, dst, fb, x, y, stride, width, height);
if (self->quality == TIGHT_QUALITY_UNSPEC)
self->quality = tight_get_quality(self);
switch (self->quality) {
case TIGHT_QUALITY_LOSSLESS:
return tight_encode_box_basic(self, dst, fb, src_fmt, x, y,
stride, width, height);
case TIGHT_QUALITY_HIGH:
case TIGHT_QUALITY_LOW:
return tight_encode_box_jpeg(self, dst, fb, x, y, stride,
width, height);
case TIGHT_QUALITY_UNSPEC:;
}
abort();
return -1;
}
int tight_encode_frame(struct tight_encoder* self, struct vec* dst,