Commit graph

21 commits

Author SHA1 Message Date
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
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
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
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
27b9159b07 Cleanup old code comment 2018-02-16 00:57:48 +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
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
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
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
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
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
Romain Vimont
629c296207 Move frame swapping logic to frame.c
Expose frames_offer_decoded_frame() and frames_consume_rendered_frame()
so that callers are not exposed to frame swapping (between the decoding
and rendering frames) details.
2018-02-08 20:57:29 +01:00
Romain Vimont
8d30d40b79 Make SKIP_FRAMES a compilation flag
The skip_frames flag was a non-configurable runtime flag. Since it is
not exposed to the user, there is no need for a (possible) runtime cost.

For testing purpose, we still want it to be configurable, so make it a
compilation flag.
2018-02-07 15:40:24 +01:00
Romain Vimont
b9c9466d65 Handle condition variable failure
Add condition variables function wrappers to handle unexpected failure.
2017-12-15 17:15:55 +01:00
Romain Vimont
c4266e487b Rename (un)lock_mutex to mutex_(un)lock
For consistency, rename lock_mutex and unlock_mutex to mutex_lock and
mutex_unlock.
2017-12-15 17:15:55 +01:00
Romain Vimont
37d88b8a6a Use SDL_bool return type instead of int
Many functions returned an int to indicate their success. For clarity,
use SDL_bool instead.
2017-12-15 11:27:54 +01:00
Romain Vimont
54d9148a36 Initial commit
Start a new clean history from here.
2017-12-12 15:25:15 +01:00