Commit graph

16 commits

Author SHA1 Message Date
Romain Vimont
35d9185f6c Record asynchronously
The record file was written from the stream thread. As a consequence,
any blocking I/O to write the file delayed the decoder.

For maximum performance even when recording is enabled, send
(refcounted) packets to a separate recording thread.
2019-07-31 01:55:40 +02:00
Romain Vimont
63af7fbafe Reduce latency by 1 frame
To packetize the H.264 raw stream, av_parser_parse2() (called by
av_read_frame()) knows that it has received a full frame only after it
has received some data for the next frame. As a consequence, the client
always waited until the next frame before sending the current frame to
the decoder!

On the device side, we know packets boundaries. To reduce latency,
make the device always transmit the "frame meta" to packetize the stream
manually (it was already implemented to send PTS, but only enabled on
recording).

On the client side, replace av_read_frame() by manual packetizing and
parsing.

<https://stackoverflow.com/questions/50682518/replacing-av-read-frame-to-reduce-delay>
<https://trac.ffmpeg.org/ticket/3354>
2019-07-31 01:55:32 +02:00
Romain Vimont
3c55d0c69b Fix double-free on error
If writing the recording header fails, do not clean the resources
immediately to avoid double-free.
2019-07-12 21:07:06 +02:00
Romain Vimont
056e47e752 Replace "cannot" by "could not" 2019-06-23 20:52:03 +02:00
Romain Vimont
a7b3901c31 Add more consts
Some decoder and recorder functions must not write to AVCodec and
AVPacket.
2019-03-03 12:02:41 +01:00
Romain Vimont
dfed1b250e Replace SDL types by C99 standard types
Scrcpy is a C11 project. Use the C99 standard types instead of the
SDL-specific types:

    SDL_bool -> bool
    SintXX   -> intXX_t
    UintXX   -> uintXX_t
2019-03-02 23:55:23 +01:00
Romain Vimont
aeda583a2c Update code style
Limit source code to 80 chars, and declare functions return type and
modifiers on a separate line.

This allows to avoid very long lines, and all function names are
aligned.

(We do this on VLC, and I like it.)
2019-03-02 20:28:46 +01:00
Romain Vimont
751600a7f9 Move all compat ifdefs definitions to compat.h
This allows to give a proper name to features requirements.
2019-02-16 15:28:56 +01:00
Romain Vimont
f5f4e6b1c5 Allocate extradata with av_malloc()
The extradata buffer is owned by libav, so it must be allocated with
av_malloc(), not SDL_malloc().

This fixes a crash on Windows during avformat_free_context().
2019-02-16 00:53:12 +01:00
Romain Vimont
b23cacfc1a Add recording logs
Log when recording is started and stopped.
2019-02-10 11:29:34 +01:00
Romain Vimont
0ed2373952 Support recording to MKV
Implement recording to Matroska files.

The format to use is determined by the option -F/--record-format if set,
or by the file extension (".mp4" or ".mkv").
2019-02-09 15:56:24 +01:00
Romain Vimont
1aaad6ba35 Rescale packet timestamp to container time base
Some containers force their own time base. For example, matroska
overwrite time_base to (AVRational) {1, 1000}.

Therefore, rescale our packet timestamps to the output stream time base.

Suggested-by: Steve Lhomme <robux4@ycbcr.xyz>
2019-02-09 15:51:18 +01:00
Romain Vimont
c8f0805b89 Write header file with correct extradata
When recording, the header must be written with extradata set to the
content of the very first packet.

Suggested-by: Steve Lhomme <robux4@ycbcr.xyz>

Fixes <https://github.com/Genymobile/scrcpy/issues/351>
Fixes <https://github.com/Genymobile/scrcpy/issues/416>
2019-02-09 15:50:24 +01:00
Romain Vimont
b98eb7d0fa Support AVStream.codec for old FFmpeg versions
AVStream.codec has been deprecated in favor of AVStream.codecpar.

Due to the FFmpeg/Libav split, this happened in two separate versions:
 - 57.33.100 for FFmpeg
 - 57.5.0 for Libav
2018-11-11 21:37:31 +01:00
yuchenlin
e361b49b4a recorder: use av_oformat_next to support older FFmpeg
Signed-off-by: yuchenlin <npes87184@gmail.com>
2018-11-11 21:37:31 +01:00
Romain Vimont
27686e9361 Add recorder
Implement recording in a separate "class".
2018-11-11 16:30:23 +01:00