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Re: [Qemu-devel] [PATCH] Remove magic numbers for VNC message IDs from c
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH] Remove magic numbers for VNC message IDs from code |
Date: |
Fri, 9 Apr 2010 22:00:01 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Wed, Mar 31, 2010 at 06:20:43PM +0100, Daniel P. Berrange wrote:
> The code processing incoming & sending outgoing messages from/to
> clients used embedded magic numbers for all message IDs. This
> made the code a little hard to follow. Add constants in the vnc.h
> header file for all message IDs and use them in the code
>
> Signed-off-by: Daniel P. Berrange <address@hidden>
Thanks, applied.
> ---
> vnc.c | 56 ++++++++++++++++++++++++++++----------------------------
> vnc.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 79 insertions(+), 28 deletions(-)
>
> diff --git a/vnc.c b/vnc.c
> index e678fcc..9ba603c 100644
> --- a/vnc.c
> +++ b/vnc.c
> @@ -541,7 +541,7 @@ static void vnc_dpy_resize(DisplayState *ds)
> vnc_colordepth(vs);
> if (size_changed) {
> if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) {
> - vnc_write_u8(vs, 0); /* msg id */
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1); /* number of rects */
> vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds),
> ds_get_height(ds),
> @@ -844,7 +844,7 @@ static void send_framebuffer_update(VncState *vs, int x,
> int y, int w, int h)
> static void vnc_copy(VncState *vs, int src_x, int src_y, int dst_x, int
> dst_y, int w, int h)
> {
> /* send bitblit op to the vnc client */
> - vnc_write_u8(vs, 0); /* msg id */
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1); /* number of rects */
> vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT);
> @@ -964,7 +964,7 @@ static int vnc_update_client(VncState *vs, int has_dirty)
> * send them to the client.
> */
> n_rectangles = 0;
> - vnc_write_u8(vs, 0); /* msg id */
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> saved_offset = vs->output.offset;
> vnc_write_u16(vs, 0);
> @@ -1013,16 +1013,16 @@ static void audio_capture_notify(void *opaque,
> audcnotification_e cmd)
>
> switch (cmd) {
> case AUD_CNOTIFY_DISABLE:
> - vnc_write_u8(vs, 255);
> - vnc_write_u8(vs, 1);
> - vnc_write_u16(vs, 0);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
> + vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_END);
> vnc_flush(vs);
> break;
>
> case AUD_CNOTIFY_ENABLE:
> - vnc_write_u8(vs, 255);
> - vnc_write_u8(vs, 1);
> - vnc_write_u16(vs, 1);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
> + vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_BEGIN);
> vnc_flush(vs);
> break;
> }
> @@ -1036,9 +1036,9 @@ static void audio_capture(void *opaque, void *buf, int
> size)
> {
> VncState *vs = opaque;
>
> - vnc_write_u8(vs, 255);
> - vnc_write_u8(vs, 1);
> - vnc_write_u16(vs, 2);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU);
> + vnc_write_u8(vs, VNC_MSG_SERVER_QEMU_AUDIO);
> + vnc_write_u16(vs, VNC_MSG_SERVER_QEMU_AUDIO_DATA);
> vnc_write_u32(vs, size);
> vnc_write(vs, buf, size);
> vnc_flush(vs);
> @@ -1434,7 +1434,7 @@ static void check_pointer_type_change(Notifier
> *notifier)
> int absolute = kbd_mouse_is_absolute();
>
> if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute
> != absolute) {
> - vnc_write_u8(vs, 0);
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1);
> vnc_framebuffer_update(vs, absolute, 0,
> @@ -1747,7 +1747,7 @@ static void framebuffer_update_request(VncState *vs,
> int incremental,
>
> static void send_ext_key_event_ack(VncState *vs)
> {
> - vnc_write_u8(vs, 0);
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1);
> vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
> ds_get_height(vs->ds),
> @@ -1757,7 +1757,7 @@ static void send_ext_key_event_ack(VncState *vs)
>
> static void send_ext_audio_ack(VncState *vs)
> {
> - vnc_write_u8(vs, 0);
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1);
> vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
> ds_get_height(vs->ds),
> @@ -1930,7 +1930,7 @@ static void vnc_colordepth(VncState *vs)
> {
> if (vnc_has_feature(vs, VNC_FEATURE_WMVI)) {
> /* Sending a WMVi message to notify the client*/
> - vnc_write_u8(vs, 0); /* msg id */
> + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> vnc_write_u8(vs, 0);
> vnc_write_u16(vs, 1); /* number of rects */
> vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds),
> @@ -1955,7 +1955,7 @@ static int protocol_client_msg(VncState *vs, uint8_t
> *data, size_t len)
> }
>
> switch (data[0]) {
> - case 0:
> + case VNC_MSG_CLIENT_SET_PIXEL_FORMAT:
> if (len == 1)
> return 20;
>
> @@ -1965,7 +1965,7 @@ static int protocol_client_msg(VncState *vs, uint8_t
> *data, size_t len)
> read_u16(data, 12), read_u8(data, 14),
> read_u8(data, 15), read_u8(data, 16));
> break;
> - case 2:
> + case VNC_MSG_CLIENT_SET_ENCODINGS:
> if (len == 1)
> return 4;
>
> @@ -1983,7 +1983,7 @@ static int protocol_client_msg(VncState *vs, uint8_t
> *data, size_t len)
>
> set_encodings(vs, (int32_t *)(data + 4), limit);
> break;
> - case 3:
> + case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST:
> if (len == 1)
> return 10;
>
> @@ -1991,19 +1991,19 @@ static int protocol_client_msg(VncState *vs, uint8_t
> *data, size_t len)
> read_u8(data, 1), read_u16(data, 2),
> read_u16(data, 4),
> read_u16(data, 6), read_u16(data, 8));
> break;
> - case 4:
> + case VNC_MSG_CLIENT_KEY_EVENT:
> if (len == 1)
> return 8;
>
> key_event(vs, read_u8(data, 1), read_u32(data, 4));
> break;
> - case 5:
> + case VNC_MSG_CLIENT_POINTER_EVENT:
> if (len == 1)
> return 6;
>
> pointer_event(vs, read_u8(data, 1), read_u16(data, 2),
> read_u16(data, 4));
> break;
> - case 6:
> + case VNC_MSG_CLIENT_CUT_TEXT:
> if (len == 1)
> return 8;
>
> @@ -2015,30 +2015,30 @@ static int protocol_client_msg(VncState *vs, uint8_t
> *data, size_t len)
>
> client_cut_text(vs, read_u32(data, 4), data + 8);
> break;
> - case 255:
> + case VNC_MSG_CLIENT_QEMU:
> if (len == 1)
> return 2;
>
> switch (read_u8(data, 1)) {
> - case 0:
> + case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT:
> if (len == 2)
> return 12;
>
> ext_key_event(vs, read_u16(data, 2),
> read_u32(data, 4), read_u32(data, 8));
> break;
> - case 1:
> + case VNC_MSG_CLIENT_QEMU_AUDIO:
> if (len == 2)
> return 4;
>
> switch (read_u16 (data, 2)) {
> - case 0:
> + case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE:
> audio_add(vs);
> break;
> - case 1:
> + case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE:
> audio_del(vs);
> break;
> - case 2:
> + case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT:
> if (len == 4)
> return 10;
> switch (read_u8(data, 4)) {
> diff --git a/vnc.h b/vnc.h
> index 0a7487b..b593608 100644
> --- a/vnc.h
> +++ b/vnc.h
> @@ -276,6 +276,57 @@ enum {
> #define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT)
>
>
> +/* Client -> Server message IDs */
> +#define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
> +#define VNC_MSG_CLIENT_SET_ENCODINGS 2
> +#define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
> +#define VNC_MSG_CLIENT_KEY_EVENT 4
> +#define VNC_MSG_CLIENT_POINTER_EVENT 5
> +#define VNC_MSG_CLIENT_CUT_TEXT 6
> +#define VNC_MSG_CLIENT_VMWARE_0 127
> +#define VNC_MSG_CLIENT_CALL_CONTROL 249
> +#define VNC_MSG_CLIENT_XVP 250
> +#define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
> +#define VNC_MSG_CLIENT_TIGHT 252
> +#define VNC_MSG_CLIENT_GII 253
> +#define VNC_MSG_CLIENT_VMWARE_1 254
> +#define VNC_MSG_CLIENT_QEMU 255
> +
> +/* Server -> Client message IDs */
> +#define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
> +#define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
> +#define VNC_MSG_SERVER_BELL 2
> +#define VNC_MSG_SERVER_CUT_TEXT 3
> +#define VNC_MSG_SERVER_VMWARE_0 127
> +#define VNC_MSG_SERVER_CALL_CONTROL 249
> +#define VNC_MSG_SERVER_XVP 250
> +#define VNC_MSG_SERVER_TIGHT 252
> +#define VNC_MSG_SERVER_GII 253
> +#define VNC_MSG_SERVER_VMWARE_1 254
> +#define VNC_MSG_SERVER_QEMU 255
> +
> +
> +
> +/* QEMU client -> server message IDs */
> +#define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
> +#define VNC_MSG_CLIENT_QEMU_AUDIO 1
> +
> +/* QEMU server -> client message IDs */
> +#define VNC_MSG_SERVER_QEMU_AUDIO 1
> +
> +
> +
> +/* QEMU client -> server audio message IDs */
> +#define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
> +#define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
> +#define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
> +
> +/* QEMU server -> client audio message IDs */
> +#define VNC_MSG_SERVER_QEMU_AUDIO_END 0
> +#define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
> +#define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
> +
> +
>
> /*****************************************************************************
> *
> * Internal APIs
> --
> 1.6.6.1
>
>
>
>
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
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