Commit graph

224 commits

Author SHA1 Message Date
Romain Vimont
9aa88b6fc3 Map numpad ENTER key
Forward numpad ENTER key to the device.

Fixes <https://github.com/Genymobile/scrcpy/issues/117>.
2018-04-08 12:40:05 +02:00
Romain Vimont
0871bca9c7 Avoid pointer arithmetic on "void *"
Fix the following warning (with -Wpedantic enabled):

    pointer of type ‘void *’ used in arithmetic [-Wpointer-arith]
2018-04-04 10:50:12 +02:00
Romain Vimont
b2b5404883 Use const pointers when possible
Sending data only require to read the input buffer, so declare it const.
2018-04-04 10:50:07 +02:00
Romain Vimont
1bddb80b5f Change volume shortcuts
I could not make Ctrl+'+' and Ctrl+'-' work for every keyboard on every
platform.

Instead, use Ctrl+UP and Ctrl+DOWN (like in VLC) to change the volume.

Fixes <https://github.com/Genymobile/scrcpy/issues/103>.
2018-04-03 14:25:11 +02:00
Romain Vimont
71f50fb697 Merge branch 'master' into dev 2018-03-28 10:45:23 +02:00
Romain Vimont
82efff34e8 Factorize texture creation
SDL_CreateTexture() is called both during initialization and on frame
size change.

To avoid inconsistent changes to arguments value, factorize them to a
single function create_texture().
2018-03-27 11:01:40 +02:00
Romain Vimont
860006e082 Forward double-click events
Double-clicks were not sent to the device anymore since the
"double-click on black borders" feature.

When a double click occurs inside the device screen, send the event to
the device normally.

Fixes <https://github.com/Genymobile/scrcpy/issues/97>.
2018-03-26 14:49:10 +02:00
Romain Vimont
57eaf05289 Improve startup time when show_touches is enabled
Enabling "show touches" involves the execution of an adb command, which
takes some time.

In order to parallelize, execute the command as soon as possible, but
reap the process only once everything is initialized.
2018-03-25 16:39:36 +02:00
Romain Vimont
dd2a5c1ecf Disable "show touches" once window is closed
If --show-touches is set, then the option must be disabled on quit.

Since it executes an adb command, it takes some time, so close the
window beforehand so that the close window button does not seem
unresponsive.
2018-03-25 16:03:02 +02:00
Romain Vimont
66ec252893 Add an option to enable "show touches"
Add -t/--show-touches option to show physical touches while scrcpy is
running.

See <https://github.com/Genymobile/scrcpy/issues/96>.
2018-03-25 15:43:27 +02:00
Romain Vimont
b13d25b9f4 Group scrcpy options into a struct
The scrcpy() function accepts as many parameters as there are options.

To simplify, group all options in a separate struct.
2018-03-25 15:16:29 +02:00
Romain Vimont
b449c09442 Merge branch 'master' into dev 2018-03-25 15:16:19 +02:00
Romain Vimont
35298bb0c6 Process the last video frame
On H.264 stream EOF, the eof_reached flag is set, but av_read_frame()
still provides a frame, so check the flag only afterwards.

As a side-effect, it also fixes a memory leak (the very last packet was
not unref).
2018-03-23 14:01:58 +01:00
Romain Vimont
73c332e3e4 Unref last packet on exit 2018-03-23 13:57:32 +01:00
Romain Vimont
29b5c5b8f4 Merge branch 'arich/addShake' into dev (#85)
Add support for CTRL+S to send hardware "shake" to device
2018-03-23 10:13:19 +01:00
Romain Vimont
88ee6bc928 Swap MENU and APP_SWITCH shortcuts
Ctrl+s was mapped to MENU, while Ctrl+m was mapped to APP_SWITCH.

To avoid confusion, swap the shortcuts:
 - Ctrl+m like _M_enu
 - Ctrl+s like _S_witch
2018-03-23 10:10:24 +01:00
Romain Vimont
35e9a64c34 Rename "shake" to "menu"
The action sends AKEYCODE_MENU, so just name it "menu".

See <https://github.com/Genymobile/scrcpy/pull/85>.
2018-03-23 10:07:48 +01:00
Andy Rich
301c52b603 Add support for CTRL+S to send hardware "shake" to device w/readme 2018-03-22 16:15:24 -07:00
Romain Vimont
f00c6c5b13 Disable custom SDL signal handlers
Request SDL not to replace the SIGINT and SIGTERM handlers, so that the
process is immediately terminated on Ctrl+C.

This avoids process hanging on Ctrl+C during network calls on
initialization.

Some of them accepted a timeout, but it was not used since
commit 9b056f5091 anymore.
2018-03-21 21:43:12 +01:00
Romain Vimont
3b3803da0d Remove useless blocks in switch/case
Remove unnecessary additional blocks.
2018-03-21 11:14:15 +01:00
Romain Vimont
f5cf6c1b2c Include source root directory
All headers and sources are in src/. To avoid using relative includes
from subdirectories ("../../"), include the source root directory.
2018-03-20 21:32:41 +01:00
Romain Vimont
c65cb36d3b Increase the number of connection attempts
In "adb forward" mode, it may take a while before the server socket is
listening, so increase the number of connection attempts.

See <https://github.com/Genymobile/scrcpy/issues/5#issuecomment-373718551>.
2018-03-16 14:59:08 +01:00
Romain Vimont
821ec9843c Fix win32 build
The types size_t and ssize_t are defined on Windows (in MSYS2), so there
is no need to typedef SIZE_T and SSIZE_T.

Exit code is "unsigned long" both on Windows 32 and 64 bits.

See <https://github.com/Genymobile/scrcpy/issues/46#issuecomment-373603596>.
2018-03-16 08:58:59 +01:00
Romain Vimont
f16bd88802 Remove useless cast
For consistency with mouse button events handling, directly assign from
Sint32 to Uint16.
2018-03-15 16:30:51 +01:00
Romain Vimont
f3e8834a3c Fix warning message
Mouse "wheel button" is meaningless :)
2018-03-15 16:14:40 +01:00
Romain Vimont
080df5eb5d Fix switch/case code style
For readability and consistency, indent case statatements, and remove
unnecessary additional blocks.
2018-03-15 16:00:40 +01:00
Romain Vimont
d744837f13 Bump version to 1.1 2018-03-14 09:34:00 +01:00
Romain Vimont
f7bc0bd5b5 Merge branch 'dev' into release 2018-03-14 09:33:53 +01:00
Romain Vimont
8a3c6a3ae7 Remove useless argument
Do not pass any data to the event watcher, it is unused.
2018-03-14 09:32:05 +01:00
Romain Vimont
0b1e59186f Workaround continuous resizing on Windows/MacOS
On Windows and MacOS, resizing blocks the event loop, so resizing events
are not triggered:
 - <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
 - <https://stackoverflow.com/a/40693139/1987178>

As a workaround, register an event watcher to render the screen from
another thread.

Since the whole event loop is blocked during resizing, the screen
content is not refreshed (on Windows and MacOS) until resizing ends.
2018-03-13 22:48:04 +01:00
Romain Vimont
e69f6f710d Disable stdout/stderr buffering on Windows
In MSYS2 on Windows, the output is buffered by default. Disable
buffering to print output immediately.

Note that in cmd.exe, it still prints nothing.
2018-03-13 10:20:09 +01:00
Romain Vimont
b858204786 Remove black borders on double-click
Resize the window to fit the device screen on click on black borders
(same as Ctrl+x).

Suggested-by: Guillaume Roche <groche@genymobile.com>
2018-03-13 08:37:46 +01:00
Romain Vimont
1038bad385 Make it work over tcpip
"adb reverse" currently does not work over tcpip (i.e. on a device
connected by "adb connect"):
<https://issuetracker.google.com/issues/37066218>

To work around the problem, if the call to "adb reverse" fails, then
fallback to "adb forward", and reverse the client/server roles.

Keep the "adb reverse" mode as the default because it does not involve
connection retries: when using "adb forward", the client must try to
connect successively until the server listens.

Due to the tunnel, every connect() will succeed, so the client must
attempt to read() to detect a connection failure. For this purpose, when
using the "adb forward" mode, the server initially writes a dummy byte,
read by the client.

Fixes <https://github.com/Genymobile/scrcpy/issues/5>.
2018-03-12 14:10:32 +01:00
Romain Vimont
2b3ed5bcdb Store serial in server instance
The serial is needed for many server actions, but this is an
implementation detail, so the caller should not have to provide it on
every call.

Instead, store the serial in the server instance on server_start().

This paves the way to implement the "adb forward" fallback properly.
2018-03-12 14:10:32 +01:00
Romain Vimont
9e328ef98b Always use the best render scale quality available
Because why not.

See <https://wiki.libsdl.org/SDL_HINT_RENDER_SCALE_QUALITY>.
2018-03-12 14:10:12 +01:00
Romain Vimont
f9a63ec272 Reverse horizontal scrolling behavior
The SDL mouse wheel event seems inconsistent between horizontal and
vertical scrolling.

> Movements to the left generate negative x values and to the right
> generate positive x values. Movements down (scroll backward) generate
> negative y values and up (scroll forward) generate positive y values.

<https://wiki.libsdl.org/SDL_MouseWheelEvent#Remarks>

Reverse the horizontal.

Fixes <https://github.com/Genymobile/scrcpy/issues/49>.
2018-03-12 09:37:46 +01:00
Romain Vimont
c87d94ee27 Map middle-click to HOME
Middle-click is useless in practice. Use it for HOME.
2018-03-10 00:44:19 +01:00
Romain Vimont
675704c71c Map right-click to BACK if screen is on
Right-click was used to turn the screen on. It did nothing when the
screen was already on.

Instead, in that case, press BACK (like Vysor).

Suggested by: <https://www.reddit.com/r/Android/comments/834zmr/introducing_scrcpy_an_app_to_display_and_control/dvfueft/>
2018-03-10 00:16:29 +01:00
Romain Vimont
9396ea6d42 Fix text input event segfault
The text input control_event was initially designed for mapping
SDL_TextInputEvent, limited to 32 characters.

For simplicity, the copy/paste feature was implemented using the same
control_event: it just sends the text to paste.

However, the pasted text might have a length breaking some assumptions:
 - on the client, the event max-size was smaller than the text
   max-length,
 - on the server, the raw buffer storing the events was smaller than the
   max event size.

Fix these inconsistencies, and encode the length on 2 bytes, to accept
more than 256 characters.

Fixes <https://github.com/Genymobile/scrcpy/issues/10>.
2018-03-09 22:30:10 +01:00
Romain Vimont
f9562f537a Unref the packet on error
Do not leak the packet data on error.
2018-03-08 21:36:04 +01:00
Romain Vimont
a34fbd23e9 Do not leak the packet data
Oops! The content of the packets were never freed.
2018-03-08 20:46:02 +01:00
Romain Vimont
c2ac6fe7bd Upgrade version to 1.0 2018-03-08 09:21:06 +01:00
Romain Vimont
e2a7abcd53 Implement clipboard paste
Paste computer clipboard to the device on Ctrl+v.

The other direction (pasting the device clipboard to the computer) is
not implemented. It would require a communication channel from the
device to the computer, other than the socket used by the video stream.
2018-03-07 18:07:02 +01:00
Romain Vimont
e4d64e8752 Initialize struct field by field
Initializing with braces initializes the other fields to 0, which is not
necessary.
2018-03-07 18:07:02 +01:00
Romain Vimont
fffeedffda Expose High DPI support configuration flag
The High DPI support is enabled by default, so that the renderer use the
full definition of High DPI screens.

However, there are still mouse coordinates problems on some MacOS having
High DPI support (but not all), so expose a way to disable it.
2018-03-07 18:07:02 +01:00
Romain Vimont
82b4acee73 Do not fail on EAGAIN
A call to avcodec_receive_frame() may return AVERROR(EAGAIN) if more
input is required. This is not an error, do not fail.
2018-03-07 18:07:02 +01:00
Romain Vimont
ab780ce26d Avoid useless variables initialization
Initialize variables only when necessary.
2018-03-07 18:07:02 +01:00
Romain Vimont
84ad6633a6 Move the new avcodec implementation before the old
The API to decode the video frames is different depending on the
libavcodec version.

Move the new API usage to the #if-block.
2018-03-07 18:07:01 +01:00
Romain Vimont
1b0cea61a5 Do not use return code for thread run function
The decoder sometimes returned a non-zero value on error, but not on
every path.

Since we never use the value, always return 0 at the end (like in the
controller).
2018-03-07 18:07:01 +01:00
Romain Vimont
42f6341a14 Revert "Enable high dpi support"
Just enabling this flag breaks mouse location values.

This reverts commit 38b56f552e.
2018-03-07 18:06:43 +01:00
Romain Vimont
acd2dc3183 Shutdown sockets before closing
The server socket does not release the port it was listening for if we
just close it: we must also shutdown it.
2018-03-07 18:04:39 +01:00
Romain Vimont
db396f2138 Fix scroll wheel mouse position
SDL_MouseWheelEvent does not provide the mouse location, so we used
SDL_GetMouseState() to retrieve it.

Unfortunately, SDL_GetMouseState() returns a position expressed in the
window coordinate system while the position filled in SDL events are
expressed in the renderer coordinate system. As a consequence, the
scroll was not applied at the right position on the device.

Therefore, convert the coordinate system.

See <https://stackoverflow.com/questions/49111054/how-to-get-mouse-position-on-mouse-wheel-event>.
2018-03-07 18:04:39 +01:00
Romain Vimont
e6feb991db Fix comment typo
Replace "at network level" by "at the network level".
2018-03-07 18:04:38 +01:00
Romain Vimont
e3f5d3b49b Double the default bitrate
Set the default video bitrate to 8Mbps. This greatly increase quality on
fast motion, without negative side effects.
2018-03-07 18:04:38 +01:00
Romain Vimont
38b56f552e Enable high dpi support
Use high DPI if available.

Note that on Mac OS X, setting this flag is not sufficient:

> On Apple's OS X you must set the NSHighResolutionCapable Info.plist
> property to YES, otherwise you will not receive a High DPI OpenGL
> display.

<https://wiki.libsdl.org/SDL_CreateWindow#flags>
2018-03-07 18:04:38 +01:00
Romain Vimont
c78ad6377c Terminate the server on stop
On user request to quit, two kinds of blocking calls must be interrupted
on the server:
 1. the reads from and writes to the socket;
 2. the call to MediaCodec.dequeueOutputBuffer().

The former case was handled by calling shutdown() on the socket from the
client, but the latter was not managed.

There is no easy way to wake this call properly, so just terminate the
process from the client (i.e. send SIGTERM on Linux) instead.
2018-02-28 16:56:20 +01:00
Romain Vimont
221a7d0826 Clean up the server from temporary folder
The server is copied to /data/local/tmp/scrcpy-server.jar and executed
on the device.

As soon as we are connected, we can unlink (rm) it from /data/local/tmp,
to keep the device clean.
2018-02-28 15:27:45 +01:00
Romain Vimont
08d32e3bae Clean up useless const-casts
The function adb_execute() now expects a "const char *const *" parameter
for the adb command, so there is no need to cast.
2018-02-28 15:05:49 +01:00
Romain Vimont
487cb10cf0 Rename ScrCpyServer to Server
The Server class is in package scrcpy, there is no need to repeat the
name in the classname.
2018-02-28 14:57:18 +01:00
Romain Vimont
089378926b Rename SCRCPY_SERVER_JAR to SCRCPY_SERVER_PATH
The server is currently a JAR, but it may ba an APK or a DEX, so the
variable name should not contain the type.

Rename the environment variable, the Meson options and the C
definitions.
2018-02-16 15:36:25 +01:00
Romain Vimont
60f3185185 Reuse server address
Set SO_REUSEADDR flag to server socket, so that bind() does not fail if
we restart scrcpy immediately after we closed the previous one.
2018-02-16 15:36:25 +01:00
Romain Vimont
6db22ef339 Log socket errors
Do not silently ignore close() and shutdown() errors, and use perror()
to get the errno.
2018-02-16 15:03:50 +01:00
Romain Vimont
ad6209f6ff Terminate the device process gracefully
Call shutdown() on the device socket to make the device process finish
its execution quickly and gracefully, without killing it.
2018-02-16 11:47:42 +01:00
Romain Vimont
a791c272bc Send and recv all data when necessary
Expose net_recv_all() and net_send_all(), equivalent of net_recv() and
net_send(), but that waits/retries until the requested length has been
transferred.

Use these new functions where it was (wrongly) assumed that the
requested length had been transferred.
2018-02-16 00:57:48 +01:00
Romain Vimont
d646f95a31 Avoid division by 0
If the frame_size width or height is 0, just return the current size to
avoid calculations involving divison by 0.
2018-02-16 00:57:48 +01:00
Romain Vimont
27b9159b07 Cleanup old code comment 2018-02-16 00:57:48 +01:00
Romain Vimont
cf59d49d25 Detect failure of device information read
If the received data is smaller than the device information size, then
something is wrong.
2018-02-16 00:57:47 +01:00
Romain Vimont
9b056f5091 Replace SDL_net by custom implementation
SDL_net is not very suitable for scrcpy.

For example, SDLNet_TCP_Accept() is non-blocking, so we have to wrap it
by calling many SDL_Net-specific functions to make it blocking.

But above all, SDLNet_TCP_Open() is a server socket only when no IP is
provided; otherwise, it's a client socket. Therefore, it is not possible
to create a server socket bound to localhost, so it accepts connections
from anywhere.

This is a problem for scrcpy, because on start, the application listens
for nearly 1 second until it accepts the first connection, supposedly
from the device. If someone on the local network manages to connect to
the server socket first, then they can stream arbitrary H.264 video.
This may be troublesome, for example during a public presentation ;-)

Provide our own simplified API (net.h) instead, implemented for the
different platforms.
2018-02-16 00:56:58 +01:00
Romain Vimont
bf41e5479b Improve decoder stopped event
The syntax was correct, but less readable, and it unnecessarily zeroed
the fields other than "type".

Create the event properly, from a separate method.
2018-02-15 22:59:04 +01:00
Romain Vimont
518d6d5dcd Prevent new window opening with CreateProcess()
Executing commands (like "adb push") created a new terminal window on
Windows. Avoid it.
2018-02-15 22:42:37 +01:00
Romain Vimont
e8cad790a4 Reword Ctrl+x description
Pressing Ctrl+x resizes the window to remove black borders, "optimal" is
not well-defined.
2018-02-15 14:04:48 +01:00
Romain Vimont
5ebf31d483 Remove useless screen render on initialization
screen_render() should not be called on initialization:
 1. it is useless, since the window is hidden until the first frame;
 2. it writes an empty texture (probably green) to the renderer.
2018-02-15 13:42:31 +01:00
Romain Vimont
d977202224 Add Ctrl+i shortcut to enable/disable FPS counter
Disable FPS counter on start, and use Ctrl+i to enable/disable it.
2018-02-15 12:24:16 +01:00
Romain Vimont
000ced9ba8 Refactor screencontrol to inputmanager
The "screen control" handled user input, which happened to be only
used to control the screen.

The controller and screen were passed to every function. Instead, group
them in a struct input_manager.

The purpose is to add a new shortcut to enable/disable FPS counter. This
feature is not related to "screen control", and will require access to
the "frames" instance.
2018-02-15 12:07:47 +01:00
Romain Vimont
42882702d7 Expose skip_frames as a build option
It can be initially configured by:

    meson builddir -Dskip_frames=false

Or on an existing builddir by:

    mesonconf builddir -Dskip_frames=false
2018-02-15 11:24:18 +01:00
Romain Vimont
38e6682875 Add FPS counter
Remove frame counter from scrcpy.c and add a new FPS counter, logging as
INFO the measured frame rate every second (on new frame).
2018-02-15 11:22:48 +01:00
Romain Vimont
c6c17af840 Do not print usage on command error
On error, a message is printed. If we print usage afterwards, it's easy
to miss it.
2018-02-14 19:01:26 +01:00
Romain Vimont
8697659890 Expose device serial as an optional argument
The device serial was provided as a positional argument:

    scrcpy 0123456789abcdef

Instead, expose it as an optional argument, -s or --serial:

    scrcpy -s 0123456789abcdef

This avoids inconsistency between platforms when the positional
argument is passed before the options (which is undefined).
2018-02-14 18:57:29 +01:00
Romain Vimont
23d92a95b6 Extract argument parsing to specific functions
To avoid a big switch/case, implement the argument parsing logic in
separate static functions.
2018-02-14 18:53:16 +01:00
Romain Vimont
111068d733 Use SDL_bool return to indicate success
For clarity and consistency across the application, return SDL_TRUE
(instead of 0) on success and SDL_FALSE on failure (instead of
non-zero).
2018-02-14 18:44:28 +01:00
Romain Vimont
d3c76c004e Sort parameters by letter
For readability, sort the command-line arguments parsing by letter.
2018-02-14 18:39:46 +01:00
Romain Vimont
0efa9305eb Require Meson 0.37
Older versions of Meson are too limited, and it's simple to install a
newer version ("pip3 install meson").
2018-02-14 14:03:56 +01:00
Romain Vimont
c2127d0819 Replace meson subprojects by subdir
Since Meson 0.44, subproject_dir may not be '.' anymore. This implies we
must move app/ and server/ to a subprojects/ directory, which requires
to also change some gradle files.

Instead, just use subdir(), with options to disable building of the app
or the server.
2018-02-14 14:03:56 +01:00
Romain Vimont
ff94462d8a Refactor build system
The client was built with Meson, the server with Gradle, and were run by
a Makefile.

Add a Meson script for the server (which delegates to Gradle), and a
parent script to build and install both the client and the server to the
system, typically with:

    meson --buildtype release build
    cd build
    ninja
    sudo ninja install

In addition, use a separate Makefile to build a "portable" version of
the application (where the client expects the server to be in the
current directory). Typically:

    make release-portable
    cd dist/scrcpy
    ./scrcpy

This is especially useful for Windows builds, which are not "installed".
2018-02-14 09:23:14 +01:00
Romain Vimont
396df8a9d8 Provide config.h.in for old meson versions
The current meson version is able to generate a config.h from a
configuration data object without any template.

However, older versions of meson require a template, so provide it for
compatibility.
2018-02-13 10:24:02 +01:00
Romain Vimont
3ed80a1fac Define macros wrappers for logs
Use macros to wrap SDL_Log* functions with the "application" category.
2018-02-13 10:10:18 +01:00
Romain Vimont
d45ef1a295 Do not use too recent set_quoted()
Old versions of meson do not support set_quoted(). Replace the call by
the old-fashioned manual quotation.
2018-02-12 17:27:25 +01:00
Romain Vimont
ad41bacb48 Fix "terminate process" on Windows
CloseHandle() does not terminate the process. TerminateProcess() does.
2018-02-12 16:35:23 +01:00
Romain Vimont
6fe65d9f5c Log with category APPLICATION
All our logs should use APPLICATION category. The logs for other
categories are not printed by default under the "critical" level.
2018-02-12 16:09:34 +01:00
Romain Vimont
4dbc450d01 Enable debug logs only for debug builds
In release mode, use the default log priorities.
2018-02-12 14:17:29 +01:00
Romain Vimont
0fce4f95b9 Properly clean up on exit
The SDL clean up does not crash anymore on exit, probably since the
memory corruption caused by calling SDLNet_TCP_Close() too early has
been resolved.
2018-02-09 16:21:10 +01:00
Romain Vimont
eb09fefd43 Timeout the server socket connection
Wait no more than 2 seconds for accepting the connection from the
device, since it blocks the event loop, preventing to react to SIGTERM
(Ctrl+C).
2018-02-09 16:21:10 +01:00
Romain Vimont
90a46b4c45 Improve startup time
On startup, the client has to:
 1. listen on a port
 2. push and start the server to the device
 3. wait for the server to connect (accept)
 4. read device name and size
 5. initialize SDL
 6. initialize the window and renderer
 7. show the window

From the execution of the app_process command to start the server on the
device, to the execution of the java main method, it takes ~800ms. As a
consequence, step 3 also takes ~800ms on the client.

Once complete, the client initializes SDL, which takes ~500ms.

These two expensive actions are executed sequentially:

                     HOST              DEVICE
listen on port        |                  |
push/start the server |----------------->|| app_process loads the jar
accept the connection .   ^              ||
                      .   |              ||
                      .   | WASTE        ||
                      .   |  OF          ||
                      .   | TIME         ||
                      .   |              ||
                      .   |              ||
                      .   v              X execution of our java main
connection accepted   |<-----------------| connect to the host
init SDL             ||                  |
                     || ,----------------| send frames
                     || |,---------------|
                     || ||,--------------|
                     || |||,-------------|
                     || ||||,------------|
init window/renderer  | |||||,-----------|
display frames        |<++++++-----------|
(many frames skipped)

The rationale for step 3 occuring before step 5 is that initializing
SDL replaces the SIGTERM handler to receive the event in the event loop,
so pressing Ctrl+C during step 5 would not work (since it blocks the
event loop).

But this is not so important; let's parallelize the SDL initialization
with the app_process execution (we'll just add a timeout to the
connection):

                     HOST              DEVICE
listen on port        |                  |
push/start the server |----------------->||app_process loads the jar
init SDL             ||                  ||
                     ||                  ||
                     ||                  ||
                     ||                  ||
                     ||                  ||
                     ||                  ||
accept the connection .                  ||
                      .                  X execution of our java main
connection accepted   |<-----------------| connect to the host
init window/renderer  |                  |
display frames        |<-----------------| send frames
                      |<-----------------|

In addition, show the window only once the first frame is available to
avoid flickering (opening a black window for 100~200ms).

Note: the window and renderer are initialized after the connection is
accepted because they use the device information received from the
device.
2018-02-09 16:19:50 +01:00
Romain Vimont
523097eadf Provide decoder_init()
Expose an initializer so that the caller does not have to guess what
fields must be initialized.
2018-02-09 13:30:49 +01:00
Romain Vimont
4662198261 Do not release TCP sockets while still in use
SDLNet_TCP_Close() not only closes, but also release the resources.

Therefore, we must not close the socket if another thread attempts to
read it.

For that purpose, move socket closing from server_stop() to
server_destroy().
2018-02-09 12:59:36 +01:00
Romain Vimont
fe21d9dfb5 Move frame updating to screen.c
Replace screen_update() by a higher-level screen_update_frame() handling
the whole frame updating, so that scrcpy.c just call it without managing
implementation details.
2018-02-09 11:14:47 +01:00
Romain Vimont
7458d8271e Kill the server immediately on close
Do not wait 100ms anymore to let the server print any exception: we
justly want to ignore them.

Moreover, there is no nanosleep() on Windows, so this solve another
problem.
2018-02-09 11:01:50 +01:00
Romain Vimont
2fdc368c41 Do not try to decode video when EOF is reached
When the video stream socket is closed and read_packey() returns -1,
av_read_frame() still returns 0.

To detect EOF, check the flag eof_reached in the AVIOContext.

This avoids garbage errors on closing.
2018-02-09 09:57:23 +01:00
Romain Vimont
a8aa3d39b7 Send "screen on" command only on mouse down
Avoid to send the command twice, once on mouse down, once on mouse up.
2018-02-09 09:43:58 +01:00
Romain Vimont
127e56780a Fix deadlock on exit if SKIP_FRAMES disabled
On exit, the renderer will not consume frames anymore, so signal the
condition variable to wake up the decoder.
2018-02-09 09:41:05 +01:00