4 years agocontrib: add AppStream metadata master
Antonio Ospite [Fri, 2 Mar 2018 15:50:33 +0000 (16:50 +0100)]
contrib: add AppStream metadata

4 years agocontrib: add TAG+="uaccess" to udev rules
Antonio Ospite [Fri, 2 Mar 2018 12:42:23 +0000 (13:42 +0100)]
contrib: add TAG+="uaccess" to udev rules

This is suggested in

Leave the GROUP="plugdev" mechanism for now, as it may still be used on
distributions which do not use systemd.

4 years agoCMakeLists.txt: use GNUInstallDirs
Antonio Ospite [Fri, 2 Mar 2018 12:40:48 +0000 (13:40 +0100)]
CMakeLists.txt: use GNUInstallDirs

This fixes installation in multi-arch paths on systems which supports that.

4 years agoCMakeLists.txt: use -fstack-protector-strong if available
Antonio Ospite [Thu, 1 Mar 2018 22:12:48 +0000 (23:12 +0100)]
CMakeLists.txt: use -fstack-protector-strong if available

This is available since gcc-4.9.

4 years agoCMakeLists.txt: bump the patch version number
Antonio Ospite [Thu, 1 Mar 2018 17:48:02 +0000 (18:48 +0100)]
CMakeLists.txt: bump the patch version number

4 years agoNEWS: Release version 0.1.7 v0.1.7
Antonio Ospite [Thu, 1 Mar 2018 16:37:11 +0000 (17:37 +0100)]
NEWS: Release version 0.1.7

4 years agoHACKING.asciidoc: update some info about the supported ffmpeg version
Antonio Ospite [Thu, 1 Mar 2018 16:34:05 +0000 (17:34 +0100)]
HACKING.asciidoc: update some info about the supported ffmpeg version

4 years agoREADME.asciidoc: update information about running libam7xx on Windows
Antonio Ospite [Thu, 1 Mar 2018 16:26:01 +0000 (17:26 +0100)]
README.asciidoc: update information about running libam7xx on Windows

4 years agoRefresh contrib/libam7xxx-compile-on-Ubuntu-14.04-LTS.diff
Antonio Ospite [Thu, 1 Mar 2018 14:46:46 +0000 (15:46 +0100)]
Refresh contrib/libam7xxx-compile-on-Ubuntu-14.04-LTS.diff

4 years agoRefresh contrib/performance/0001-Instrument-code-with-fps-meter.patch
Antonio Ospite [Thu, 1 Mar 2018 14:33:34 +0000 (15:33 +0100)]
Refresh contrib/performance/0001-Instrument-code-with-fps-meter.patch

4 years agoexamples: remove some trailing spaces
Antonio Ospite [Thu, 1 Mar 2018 14:00:25 +0000 (15:00 +0100)]
examples: remove some trailing spaces

4 years agoam7xxx-play: add a comment to explain why a run-time warning can be ignored
Antonio Ospite [Wed, 28 Feb 2018 16:09:46 +0000 (17:09 +0100)]
am7xxx-play: add a comment to explain why a run-time warning can be ignored

Using the AV_PIX_FMT_YUVJ420P pixel format results n a run-time warning
from swscaler:

[swscaler @ 0x5600046b3cc0] deprecated pixel format used, make sure you did set range correctly

However this cannot be changed because the mjpeg codec relies on it,
otherwise it fails with the following error message:

[mjpeg @ 0x560eea5f5360] Specified pixel format yuv420p is invalid or not supported

So just add a comment, to avoid loosing time figuring things out again
in the future.

4 years agoam7xxx-play: stop using avcodec_decode_video2() and avcodec_encode_video2()
Antonio Ospite [Wed, 28 Feb 2018 15:23:34 +0000 (16:23 +0100)]
am7xxx-play: stop using avcodec_decode_video2() and avcodec_encode_video2()

Since FFMpeg 3.1, avcodec_decode_video2() and avcodec_encode_video2()
have been deprecated in favor of the more generic send/receive API.

Provide some wrappers to ease the transition between the two APIs.

The change fixes the following warnings:

  .../libam7xxx/examples/am7xxx-play.c: In function ‘am7xxx_play’:
  .../libam7xxx/examples/am7xxx-play.c:372:3: warning: ‘avcodec_decode_video2’ is deprecated [-Wdeprecated-declarations]
     ret = avcodec_decode_video2(input_ctx.codec_ctx, frame_raw, &got_frame, &in_packet);
  In file included from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319:0,
                   from /usr/include/x86_64-linux-gnu/libavdevice/avdevice.h:51,
                   from .../libam7xxx/examples/am7xxx-play.c:32:
  /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:4993:5: note: declared here
   int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
  .../libam7xxx/examples/am7xxx-play.c:403:5: warning: ‘avcodec_encode_video2’ is deprecated [-Wdeprecated-declarations]
       ret = avcodec_encode_video2(output_ctx.codec_ctx,
  In file included from /usr/include/x86_64-linux-gnu/libavformat/avformat.h:319:0,
                   from /usr/include/x86_64-linux-gnu/libavdevice/avdevice.h:51,
                   from .../libam7xxx/examples/am7xxx-play.c:32:
  /usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:5508:5: note: declared here
   int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,

4 years agoam7xxx-play: s/picture/frame/ to make the variable names match the data types
Antonio Ospite [Wed, 28 Feb 2018 14:17:28 +0000 (15:17 +0100)]
am7xxx-play: s/picture/frame/ to make the variable names match the data types

No functional changes, just a word substitution to match more closely
what the data types represent.

4 years agoam7xxx-play: use av_find_best_stream() instead of open-coding the search
Antonio Ospite [Wed, 28 Feb 2018 12:50:31 +0000 (13:50 +0100)]
am7xxx-play: use av_find_best_stream() instead of open-coding the search

4 years agoam7xxx-play: remove useless call to avcodec_close() in video_output_init()
Antonio Ospite [Wed, 28 Feb 2018 12:25:07 +0000 (13:25 +0100)]
am7xxx-play: remove useless call to avcodec_close() in video_output_init()

If the code reaches the "cleanup" exit path in video_output_init() the
output codec context was never opened, so there is no need to close it.

4 years agoam7xxx-play: free AVCodecContext variables with avcodec_free_context()
Antonio Ospite [Wed, 28 Feb 2018 12:01:51 +0000 (13:01 +0100)]
am7xxx-play: free AVCodecContext variables with avcodec_free_context()

Deallocate AVCodecContext variables with avcodec_free_context() instead
of av_free() this is for symmetry with the allocation functions.

Adjust and update the comment to the new code.

4 years agoam7xxx-play: use AVStream.codecpar instead of the deprecated AVStream.codec
Antonio Ospite [Wed, 28 Feb 2018 11:48:31 +0000 (12:48 +0100)]
am7xxx-play: use AVStream.codecpar instead of the deprecated AVStream.codec

AVStream.codec has been deprecated and AVStream.codecpar should be used
instead, as shown in:;h=9200514ad8717c63f82101dc394f4378854325bf

The changes fix the following compilation warnings:

  .../libam7xxx/examples/am7xxx-play.c: In function ‘video_input_init’:
  .../libam7xxx/examples/am7xxx-play.c:104:3: warning: ‘codec’ is deprecated [-Wdeprecated-declarations]
     if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
  In file included from /usr/include/x86_64-linux-gnu/libavdevice/avdevice.h:51:0,
                   from .../libam7xxx/examples/am7xxx-play.c:32:
  /usr/include/x86_64-linux-gnu/libavformat/avformat.h:893:21: note: declared here
       AVCodecContext *codec;
  .../libam7xxx/examples/am7xxx-play.c:115:2: warning: ‘codec’ is deprecated [-Wdeprecated-declarations]
    input_codec_ctx = input_format_ctx->streams[video_index]->codec;
  In file included from /usr/include/x86_64-linux-gnu/libavdevice/avdevice.h:51:0,
                   from .../libam7xxx/examples/am7xxx-play.c:32:
  /usr/include/x86_64-linux-gnu/libavformat/avformat.h:893:21: note: declared here
       AVCodecContext *codec;

4 years agoam7xxx-play: don't override return value when there is a usable one
Antonio Ospite [Wed, 28 Feb 2018 11:43:33 +0000 (12:43 +0100)]
am7xxx-play: don't override return value when there is a usable one

Don't override the avcodec_open2() return value, we can pass along the
negative return value as is to the caller.

4 years agoam7xxx-play: remove some code which will never be executed
Antonio Ospite [Wed, 28 Feb 2018 09:18:07 +0000 (10:18 +0100)]
am7xxx-play: remove some code which will never be executed

input_codec_ctx is guaranteed to be defined here, otherwise the code
would have bailed out earlier.

4 years agoam7xxx-play: remove any usage of ENOTSUP
Antonio Ospite [Tue, 27 Feb 2018 22:42:32 +0000 (23:42 +0100)]
am7xxx-play: remove any usage of ENOTSUP

There's really no need to use ENOTSUP here, the return value is not
checked against the specific value, but just for the sign.

Replacing it with EINVAL makes the code more aligned with the other
error paths and also allows to remove a conditional define.

4 years agoam7xxx: return EINVAL instead of ENOTSUP in am7xxx_get_device_info()
Antonio Ospite [Tue, 27 Feb 2018 17:41:44 +0000 (18:41 +0100)]
am7xxx: return EINVAL instead of ENOTSUP in am7xxx_get_device_info()

All the other error paths about invalid results or unsupported
operations return EINVAL, so remove the only instance of ENOTSUP.

Since the API documentation makes no promises on the actual negative
value of the returned error, this little change of behavior should be

4 years agoam7xxx: fix C99 conformance for printf & co. when compiling with MinGW
Antonio Ospite [Tue, 27 Feb 2018 16:03:36 +0000 (17:03 +0100)]
am7xxx: fix C99 conformance for printf & co. when compiling with MinGW

C99 format specifiers like "%hhd" are used with log_message() but MinGW
(and Windows) does not really supports them, so the compiler suggests to
use the "gnu_printf" attribute for the function.

However "gnu_printf"is not available on clang so it's not an option,
a better alternative is the solution suggested by MinGW at

The change fixes the following warnings when compiling with MinGW:

.../libam7xxx/src/am7xxx.c: In function ‘log_message’:
.../libam7xxx/src/am7xxx.c:647:3: warning: function ‘log_message’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
   vfprintf(stderr, fmt, ap);
.../libam7xxx/src/am7xxx.c: In function ‘open_device’:
.../libam7xxx/src/am7xxx.c:772:15: warning: unknown conversion type character ‘h’ in format [-Wformat=]
    debug(ctx, "Cannot set configuration %hhu\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)
.../libam7xxx/src/am7xxx.c:772:15: warning: too many arguments for format [-Wformat-extra-args]
    debug(ctx, "Cannot set configuration %hhu\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)
.../libam7xxx/src/am7xxx.c:785:14: warning: unknown conversion type character ‘h’ in format [-Wformat=]
   debug(ctx, "Cannot claim interface %hhu\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)
.../libam7xxx/src/am7xxx.c:785:14: warning: too many arguments for format [-Wformat-extra-args]
   debug(ctx, "Cannot claim interface %hhu\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)
.../libam7xxx/src/am7xxx.c:803:14: warning: unknown conversion type character ‘h’ in format [-Wformat=]
   debug(ctx, "libusb configuration changed (expected: %hhu, current: %d)\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)
.../libam7xxx/src/am7xxx.c:803:14: warning: too many arguments for format [-Wformat-extra-args]
   debug(ctx, "libusb configuration changed (expected: %hhu, current: %d)\n",
.../libam7xxx/src/am7xxx.c:65:85: note: in definition of macro ‘debug’
 #define debug(ctx, ...)   log_message(ctx,  AM7XXX_LOG_DEBUG,   __func__, 0,        __VA_ARGS__)

4 years agoam7xxx: use the same indenting style for all preprocessor directives
Antonio Ospite [Mon, 26 Feb 2018 17:29:38 +0000 (18:29 +0100)]
am7xxx: use the same indenting style for all preprocessor directives

While at it also reformat a multi-line comment to follow the style of
the other comments.

4 years agodoc: update
Antonio Ospite [Mon, 26 Feb 2018 16:02:43 +0000 (17:02 +0100)]
doc: update

4 years agoam7xxx: specify LIBUSB_CALL for send_data_async_complete_cb()
Antonio Ospite [Mon, 26 Feb 2018 15:05:20 +0000 (16:05 +0100)]
am7xxx: specify LIBUSB_CALL for send_data_async_complete_cb()

send_data_async_complete_cb() is used as a callback for
libusb_fill_bulk_transfer() and it is expected to be of type
'libusb_transfer_cb_fn' which is defined using LIBUSB_CALL.

LIBUSB_CALL is only used on Windows and not having it results in the
following warning when compiling for Windows:

  .../libam7xxx/src/am7xxx.c: In function ‘send_data_async’:
  .../libam7xxx/src/am7xxx.c:508:7: warning: passing argument 6 of ‘libusb_fill_bulk_transfer’ from incompatible pointer type [-Wincompatible-pointer-types]
         send_data_async_complete_cb, dev, 0);
  In file included from /home/ao2/Proj/picoProjector/libam7xxx/src/am7xxx.c:24:0:
  .../libam7xxx/build/libusb-1.0.21/include/libusb-1.0/libusb.h:1553:20: note: expected ‘libusb_transfer_cb_fn’ but argument is of type ‘void (*)(struct libusb_transfer *)’
   static inline void libusb_fill_bulk_transfer(struct libusb_transfer *transfer,

4 years agosrc/tools.c: fix compilation on Windows
Antonio Ospite [Mon, 26 Feb 2018 14:50:53 +0000 (15:50 +0100)]
src/tools.c: fix compilation on Windows

On Windows nanosleep() is not available and compiling fails with the
following error:

  CMakeFiles/am7xxx.dir/objects.a(tools.c.obj):tools.c:(.text+0x4a): undefined reference to `nanosleep'
  collect2: error: ld returned 1 exit status
  make[2]: *** [src/CMakeFiles/am7xxx.dir/build.make:153: lib/libam7xxx.dll] Error 1
  make[1]: *** [CMakeFiles/Makefile2:189: src/CMakeFiles/am7xxx.dir/all] Error 2
  make: *** [Makefile:130: all] Error 2

Using the native Windows function Sleep() fixes the error.

4 years agoHACKING.asciidoc: update the Windows build instructions
Antonio Ospite [Mon, 26 Feb 2018 14:44:22 +0000 (15:44 +0100)]
HACKING.asciidoc: update the Windows build instructions

4 years agoexamples/CMakeLists.txt: restrict required libraries for avformat_open_input()
Antonio Ospite [Mon, 26 Feb 2018 14:39:12 +0000 (15:39 +0100)]
examples/CMakeLists.txt: restrict required libraries for avformat_open_input()

When checking if avformat_open_input() exists, link only with
FFMPEG_LIBAVFORMAT_LIBRARIES, this is more essential and also more
symmetric from a readability point of view.

4 years agoexamples/CMakeLists.txt: use a relative path for the include file
Antonio Ospite [Mon, 26 Feb 2018 14:01:40 +0000 (15:01 +0100)]
examples/CMakeLists.txt: use a relative path for the include file

This is the correct way to include a file when calling
check_symbol_exists(), since the include paths are already set with:


4 years agomingw_cross_toolchain.cmake: remove the deprecated CMAKE_FORCE_C_COMPILER
Antonio Ospite [Mon, 26 Feb 2018 13:53:48 +0000 (14:53 +0100)]
mingw_cross_toolchain.cmake: remove the deprecated CMAKE_FORCE_C_COMPILER

This fixes the following warning:

  CMake Deprecation Warning at /usr/share/cmake-3.10/Modules/CMakeForceCompiler.cmake:69 (message):
    The CMAKE_FORCE_C_COMPILER macro is deprecated.  Instead just set
    CMAKE_C_COMPILER and allow CMake to identify the compiler.

4 years agoChangeLog: remove the file, users can look at the git history for details
Antonio Ospite [Mon, 26 Feb 2018 10:11:44 +0000 (11:11 +0100)]
ChangeLog: remove the file, users can look at the git history for details

4 years agoam7xxx-play: rename CODEC_FLAG_QSCALE to AV_CODEC_FLAG_QSCALE
Antonio Ospite [Mon, 26 Feb 2018 10:03:13 +0000 (11:03 +0100)]

In FFMpeg 3.5+ the unprefixed CODEC_* constants have been removed, only
the correspondent AV_CODEC_* ones are available.

This fixes a build failure:

  .../examples/am7xxx-play.c: In function 'video_output_init':
  .../examples/am7xxx-play.c:240:34: error: 'CODEC_FLAG_QSCALE' undeclared (first use in this function); did you mean 'AV_CODEC_FLAG_QSCALE'?
    output_codec_ctx->flags      |= CODEC_FLAG_QSCALE;

5 years agocontrib/howto-picopix.asciidoc: minor fixes
Antonio Ospite [Thu, 28 Sep 2017 12:06:54 +0000 (14:06 +0200)]
contrib/howto-picopix.asciidoc: minor fixes

5 years agocontrib: add a HOWTO for new users
Antonio Ospite [Thu, 28 Sep 2017 12:02:34 +0000 (14:02 +0200)]
contrib: add a HOWTO for new users

Thanks to Étienne Morin,

5 years agocontrib: add a patch to allow compiling libam7xxx on Ubuntu 14.04 LTS
Antonio Ospite [Thu, 28 Sep 2017 09:37:55 +0000 (11:37 +0200)]
contrib: add a patch to allow compiling libam7xxx on Ubuntu 14.04 LTS

The patch has not been tested, it is here just as a convenient starting
point for interested users.

5 years agodoc/lsusb_dumps: show that the PicoPix 2330 and 2340 have the same descriptor
Antonio Ospite [Thu, 28 Sep 2017 07:14:52 +0000 (09:14 +0200)]
doc/lsusb_dumps: show that the PicoPix 2330 and 2340 have the same descriptor

Rename lsusb_Philips-PicoPix-2330.log to show that the PicoPix 2340 has
the same descriptor.

5 years agoam7xxx: simplify the device info caching operation in am7xxx_open_device()
Antonio Ospite [Tue, 14 Feb 2017 09:04:19 +0000 (10:04 +0100)]
am7xxx: simplify the device info caching operation in am7xxx_open_device()

Now that am7xxx_get_device_info() is more robust, the check in the
caller can be avoided.

5 years agoam7xxx: make sure am7xxx_get_device_info() always returns sensible values
Antonio Ospite [Tue, 14 Feb 2017 08:49:24 +0000 (09:49 +0100)]
am7xxx: make sure am7xxx_get_device_info() always returns sensible values

am7xxx_get_device_info() was not covering the case of a non-NULL output
parameter on the very first invocation, this case would not usually
happen in normal operation, but the problem was there: in that case the
output device_info structure would have contained garbage, as spotted by
the static analyzer:

.../src/am7xxx.c:1279:21: warning: The right operand of '<=' is a garbage value
            original_width <= device_info.native_width &&
                           ^  ~~~~~~~~~~~~~~~~~~~~~~~~
.../src/am7xxx.c:1288:39: warning: The right operand of '/' is a garbage value
        width_ratio =  (float)original_width / device_info.native_width;
                                             ^ ~~~~~~~~~~~~~~~~~~~~~~~~

While at it also fix the symmetric case of a NULL output parameter on
subsequent invocation: check that the output argument is non-NULL before
memcpy-ing to it.

6 years agoam7xxx-play: get rid of the deprecated function av_free_packet()
Antonio Ospite [Thu, 30 Jun 2016 16:05:53 +0000 (18:05 +0200)]
am7xxx-play: get rid of the deprecated function av_free_packet()

This also fixes this warning:

  warning: ‘av_free_packet’ is deprecated

6 years agoam7xxx-play: get rd of the deprecated function avpicture_fill()
Antonio Ospite [Thu, 30 Jun 2016 16:02:45 +0000 (18:02 +0200)]
am7xxx-play: get rd of the deprecated function avpicture_fill()

This also fixes this warning:

  warning: ‘avpicture_fill’ is deprecated

6 years agoam7xxx-play: get rid of the deprecated function avpicture_get_size()
Antonio Ospite [Thu, 30 Jun 2016 16:00:33 +0000 (18:00 +0200)]
am7xxx-play: get rid of the deprecated function avpicture_get_size()

This also fixes this warning:

  warning: ‘avpicture_get_size’ is deprecated

6 years agoam7xxx: simplify one return path in am7xxx_init()
Antonio Ospite [Thu, 30 Jun 2016 15:58:33 +0000 (17:58 +0200)]
am7xxx: simplify one return path in am7xxx_init()

Just return directly when there is no cleanup to do, it is more

6 years agoexamples/CMakeLists.txt: clean up Feature Test Macro Requirements defines
Antonio Ospite [Wed, 29 Jun 2016 17:35:21 +0000 (19:35 +0200)]
examples/CMakeLists.txt: clean up Feature Test Macro Requirements defines

Setting _POSIX_C_SOURCE to the right value enables all the needed

This also avoids using _DEFAULT_SOURCE explicitly to get rid of the
_BSD_SOURCE deprecation warning.

6 years agosrc/CMakeLists.txt: fix a compilation warning about _BSD_SOURCE deprecation
Antonio Ospite [Wed, 29 Jun 2016 17:32:29 +0000 (19:32 +0200)]
src/CMakeLists.txt: fix a compilation warning about _BSD_SOURCE deprecation

Fix this warning from recent compilers:
 # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"

6 years agoam7xxx-play: add more informations about how the raw format is handled
Antonio Ospite [Wed, 29 Jun 2016 17:04:28 +0000 (19:04 +0200)]
am7xxx-play: add more informations about how the raw format is handled

This new comment should make it easier to understand why there is no
need to encode the frame when outputting data in the raw format
supported by the device

6 years agoam7xxx-play: output more informative message when get_x_screen_size() is a stub
Antonio Ospite [Wed, 29 Jun 2016 17:02:21 +0000 (19:02 +0200)]
am7xxx-play: output more informative message when get_x_screen_size() is a stub

6 years agoHACKING.asciidoc: mention libxcb1-dev as a build dependency
Antonio Ospite [Wed, 29 Jun 2016 16:56:49 +0000 (18:56 +0200)]
HACKING.asciidoc: mention libxcb1-dev as a build dependency

Without libxcb1-dev am7xxx-play can't figure out the screen dimensions.

6 years agoFix a missing parenthesis in some output strings
Antonio Ospite [Sat, 9 Jan 2016 12:18:40 +0000 (13:18 +0100)]
Fix a missing parenthesis in some output strings

6 years agoam7xxx-modeswitch: adjust comment formatting
Antonio Ospite [Sat, 9 Jan 2016 12:17:49 +0000 (13:17 +0100)]
am7xxx-modeswitch: adjust comment formatting

7 years agoNEWS: fix a typo s/am7xx-play/am7xxx-play/
Antonio Ospite [Wed, 18 Nov 2015 15:52:39 +0000 (16:52 +0100)]
NEWS: fix a typo s/am7xx-play/am7xxx-play/

7 years agoam7xxx: bump _POSIX_C_SOURCE to 200112L for lroundf()
Antonio Ospite [Tue, 17 Nov 2015 17:42:39 +0000 (18:42 +0100)]
am7xxx: bump _POSIX_C_SOURCE to 200112L for lroundf()

The library code uses lroundf() from math.h but some compilers may warn
about an implicit definition of it, so make sure it it actually
available by following the requirements from the LROUND(3) man page.

7 years agoam7xxx: remove a useless empty line
Antonio Ospite [Tue, 17 Nov 2015 17:41:18 +0000 (18:41 +0100)]
am7xxx: remove a useless empty line

7 years agoRelease version 0.1.6 v0.1.6
Antonio Ospite [Tue, 17 Nov 2015 15:37:28 +0000 (16:37 +0100)]
Release version 0.1.6

7 years agoRefresh contrib/performance/0001-Instrument-code-with-fps-meter.patch
Antonio Ospite [Tue, 17 Nov 2015 15:30:35 +0000 (16:30 +0100)]
Refresh contrib/performance/0001-Instrument-code-with-fps-meter.patch

7 years agoStrip trailing spaces here and there
Antonio Ospite [Tue, 17 Nov 2015 14:46:15 +0000 (15:46 +0100)]
Strip trailing spaces here and there

7 years agoam7xxx-play: fix warning about deprecated fields in the output codec
Antonio Ospite [Tue, 17 Nov 2015 12:21:31 +0000 (13:21 +0100)]
am7xxx-play: fix warning about deprecated fields in the output codec

  warning: ‘lmin’ is deprecated [-Wdeprecated-declarations]
    output_codec_ctx->mb_lmin    = output_codec_ctx->lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
  warning: ‘lmax’ is deprecated [-Wdeprecated-declarations]
    output_codec_ctx->mb_lmax    = output_codec_ctx->lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;

7 years agoam7xxx-play: don't dump the last frame unconditionally
Antonio Ospite [Tue, 17 Nov 2015 12:10:40 +0000 (13:10 +0100)]
am7xxx-play: don't dump the last frame unconditionally

Stop dumping the last frame unconditionally in DEBUG mode, it's not the
expected behavior; instead add an option to explicitly enable dumping
the last frame but still leave this active only in DEBUG mode.

7 years agoam7xxx-play: fix runtime warnings from ffmpeg
Antonio Ospite [Tue, 17 Nov 2015 09:47:36 +0000 (10:47 +0100)]
am7xxx-play: fix runtime warnings from ffmpeg

ffmpeg emits warnings at runtime about some AVFrame fields not being

  [mjpeg @ 0x669040] AVFrame.format is not set
  [mjpeg @ 0x669040] AVFrame.width or height is not set

This happens in a loop so the message is repeated over and over and
becomes annoying, fix this by setting the missing values.

7 years agoTODO: add some ideas for minor enhancements
Antonio Ospite [Tue, 17 Nov 2015 09:43:46 +0000 (10:43 +0100)]
TODO: add some ideas for minor enhancements

7 years agoam7xxx-play: fix an error message, we now use am7xxx_send_image_async()
Antonio Ospite [Tue, 17 Nov 2015 09:41:58 +0000 (10:41 +0100)]
am7xxx-play: fix an error message, we now use am7xxx_send_image_async()

7 years agoFix some format string warnings from clang
Antonio Ospite [Sat, 7 Nov 2015 21:33:03 +0000 (22:33 +0100)]
Fix some format string warnings from clang

Building with clang gives some format string warnings as below, fix them
by using the correct format string when printing out the values.

  .../libam7xxx/src/am7xxx.c:804:38: warning:
  format specifies type 'unsigned char' but the argument has type 'int'
                        (*dev)->desc->configuration, current_configuration);
  .../libam7xxx/src/am7xxx.c:65:85: note:
  expanded from macro 'debug'
  #define debug(ctx, ...)   log_message(ctx, AM7XXX_LOG_DEBUG, __func__, 0, __VA_ARGS__)
  1 warning generated.


  warning: format specifies type 'unsigned char' but the argument has type
  'int' [-Wformat]
  note: expanded from macro 'AM7XXX_STORAGE_CONFIGURATION'
  warning: format specifies type 'unsigned char' but the argument has type
  'int' [-Wformat]
  note: expanded from macro 'AM7XXX_STORAGE_INTERFACE'
  warning: format specifies type 'unsigned char' but the argument has type
  'int' [-Wformat]
                          AM7XXX_STORAGE_CONFIGURATION, current_configuration);
  note: expanded from macro 'AM7XXX_STORAGE_CONFIGURATION'
  warning: format specifies type 'unsigned char' but the argument has type
  'int' [-Wformat]
                          AM7XXX_STORAGE_CONFIGURATION, current_configuration);
  4 warnings generated.

7 years agoam7xxx-play: Replace deprecated FFmpeg API symbol PIX_FMT_NV12
Andreas Cadhalpun [Sun, 1 Nov 2015 23:00:00 +0000 (00:00 +0100)]
am7xxx-play: Replace deprecated FFmpeg API symbol PIX_FMT_NV12

PIX_FMT_NV12 is not going to be available in ffmpeg 2.9 so prepare for
that by using AV_PIX_FMT_NV12, which BTW has been available for quite
some time already.

7 years agoam7xxx: put some spaces around operators
Antonio Ospite [Wed, 8 Jul 2015 09:26:13 +0000 (11:26 +0200)]
am7xxx: put some spaces around operators

7 years agoam7xxx-modeswitch: fix the Length field in the switch command
Antonio Ospite [Fri, 26 Jun 2015 08:25:26 +0000 (10:25 +0200)]
am7xxx-modeswitch: fix the Length field in the switch command

The switch_command is a USB storage message, the bulk_cb_wrap structure
from include/linux/usb/storage.h in the Linux kernel shows the fields

struct bulk_cb_wrap {
__le32 Signature; /* contains 'USBC' */
__u32 Tag; /* unique per command id */
__le32 DataTransferLength; /* size of data */
__u8 Flags; /* direction in bit 0 */
__u8 Lun; /* LUN normally 0 */
__u8 Length; /* length of the CDB */
__u8 CDB[16]; /* max command */

In switch_command the data in CDB is 16 bytes long (0x10), so using 0x0c
was wrong, it worked on some devices but it did not on others.

Use the correct value.

Thanks-to: Balasubramanian S <>

7 years agoam7xxx: remove a redundant debug message in open_device()
Antonio Ospite [Wed, 10 Jun 2015 11:30:09 +0000 (13:30 +0200)]
am7xxx: remove a redundant debug message in open_device()

The calling function will show an error for the same condition.

7 years agoam7xxx: use debug() instead of fatal() in add_new_device()
Antonio Ospite [Wed, 10 Jun 2015 11:16:02 +0000 (13:16 +0200)]
am7xxx: use debug() instead of fatal() in add_new_device()

We are guaranteed that ctx is non-null by a previous check.

7 years agoam7xxx: rename the "function" argument of log_message() to "function_name"
Antonio Ospite [Wed, 10 Jun 2015 10:51:38 +0000 (12:51 +0200)]
am7xxx: rename the "function" argument of log_message() to "function_name"

This express better the meaning of the variable.

7 years agoam7xxx: split declaration and initialization of the "transferred" variable
Antonio Ospite [Wed, 10 Jun 2015 10:42:39 +0000 (12:42 +0200)]
am7xxx: split declaration and initialization of the "transferred" variable

This makes it clearer than we mean to initialize the variable to
0 before _each_ libusb_bulk_transfer() call.

7 years agoam7xxx-modeswitch: add a blank line for readability
Antonio Ospite [Wed, 10 Jun 2015 10:41:57 +0000 (12:41 +0200)]
am7xxx-modeswitch: add a blank line for readability

7 years agoam7xxx-modeswitch: set USB configuration following libusb documentation
Antonio Ospite [Wed, 10 Jun 2015 10:38:21 +0000 (12:38 +0200)]
am7xxx-modeswitch: set USB configuration following libusb documentation

For the details see:

7 years agoam7xxx-modeswitch: reorder declarations of variables
Antonio Ospite [Wed, 10 Jun 2015 10:22:57 +0000 (12:22 +0200)]
am7xxx-modeswitch: reorder declarations of variables

7 years agoam7xxx-modeswitch: remove unneeded assignment
Antonio Ospite [Wed, 10 Jun 2015 10:21:41 +0000 (12:21 +0200)]
am7xxx-modeswitch: remove unneeded assignment

7 years agoam7xxx-modeswitch: improve messages relative to libusb failures
Antonio Ospite [Wed, 10 Jun 2015 10:18:49 +0000 (12:18 +0200)]
am7xxx-modeswitch: improve messages relative to libusb failures

7 years agoam7xxx-modeswitch: use LIBUSB_LOG_LEVEL_INFO instead of a magic number
Antonio Ospite [Wed, 10 Jun 2015 10:12:22 +0000 (12:12 +0200)]
am7xxx-modeswitch: use LIBUSB_LOG_LEVEL_INFO instead of a magic number

7 years agoam7xxx-modeswitch: use libusb_set_auto_detach_kernel_driver()
Antonio Ospite [Wed, 10 Jun 2015 10:09:31 +0000 (12:09 +0200)]
am7xxx-modeswitch: use libusb_set_auto_detach_kernel_driver()

7 years agoam7xxx: print an error message when libusb_init fails
Antonio Ospite [Wed, 10 Jun 2015 10:07:20 +0000 (12:07 +0200)]
am7xxx: print an error message when libusb_init fails

7 years agoam7xxx: improve the comment about setting a new configuration
Antonio Ospite [Wed, 10 Jun 2015 09:05:46 +0000 (11:05 +0200)]
am7xxx: improve the comment about setting a new configuration

Explain better why it is not needed to detach all kernel drivers in most

7 years agoam7xxx: clarify a comment about copying data in send_data_async()
Antonio Ospite [Wed, 10 Jun 2015 09:03:58 +0000 (11:03 +0200)]
am7xxx: clarify a comment about copying data in send_data_async()

7 years agoam7xxx: release the interface when needed in open_device()
Antonio Ospite [Mon, 20 Apr 2015 15:19:10 +0000 (17:19 +0200)]
am7xxx: release the interface when needed in open_device()

Release the interface when bailing out of open_device() after the
interface has been claimed.

7 years agoam7xxx: check the return value of libusb_get_configuration()
Antonio Ospite [Mon, 20 Apr 2015 15:09:19 +0000 (17:09 +0200)]
am7xxx: check the return value of libusb_get_configuration()

libusb_get_configuration() can still fail after the device has been
opened, so check its actual return value before trusting the returned

7 years agoam7xxx: fix the error path of the second configuration check
Antonio Ospite [Mon, 20 Apr 2015 14:42:02 +0000 (16:42 +0200)]
am7xxx: fix the error path of the second configuration check

Return a negative error value when the configuration check done after
claiming the interface fails, and also fix the output messages.

7 years agoam7xxx: add comment about detaching kernel drivers before setting configuration
Antonio Ospite [Mon, 20 Apr 2015 14:32:04 +0000 (16:32 +0200)]
am7xxx: add comment about detaching kernel drivers before setting configuration

7 years agoam7xxx: add some spaces in a comment
Antonio Ospite [Mon, 20 Apr 2015 14:30:53 +0000 (16:30 +0200)]
am7xxx: add some spaces in a comment

7 years agoam7xxx: fix the coding style used to represent pointers
Antonio Ospite [Mon, 20 Apr 2015 14:28:47 +0000 (16:28 +0200)]
am7xxx: fix the coding style used to represent pointers

7 years agoam7xxx: use libusb_error_name to print the return value of libusb calls
Antonio Ospite [Sun, 25 Jan 2015 23:20:20 +0000 (00:20 +0100)]
am7xxx: use libusb_error_name to print the return value of libusb calls

This makes the debug output more useful.

7 years agoam7xxx: detach kernel driver before claiming the interface
Antonio Ospite [Sun, 25 Jan 2015 23:05:27 +0000 (00:05 +0100)]
am7xxx: detach kernel driver before claiming the interface

This is needed on some systems like Ubuntu 14.04, but apparently not on
Debian ones.

Thanks-to: Andrea Console <>

7 years agoam7xxx: use a saner approach when setting the USB configuration
Antonio Ospite [Sun, 25 Jan 2015 23:00:25 +0000 (00:00 +0100)]
am7xxx: use a saner approach when setting the USB configuration

Follow the advices from

7 years agoam7xxx: when listing possible return values use "or" in place of "and"
Antonio Ospite [Sun, 25 Jan 2015 22:42:42 +0000 (23:42 +0100)]
am7xxx: when listing possible return values use "or" in place of "and"

7 years agoam7xxx: mention open_device() in the comment about scan_devices()
Antonio Ospite [Sun, 25 Jan 2015 22:40:35 +0000 (23:40 +0100)]
am7xxx: mention open_device() in the comment about scan_devices()

7 years agoam7xxx: clean up the exit path in open_device()
Antonio Ospite [Sun, 25 Jan 2015 22:27:37 +0000 (23:27 +0100)]
am7xxx: clean up the exit path in open_device()

7 years agoam7xxx: comment on the loop termination in SCAN_OP_OPEN_DEVICE mode
Antonio Ospite [Sun, 25 Jan 2015 22:23:33 +0000 (23:23 +0100)]
am7xxx: comment on the loop termination in SCAN_OP_OPEN_DEVICE mode

7 years agoam7xxx: factor out an open_device() function from scan_devices()
Antonio Ospite [Sun, 25 Jan 2015 22:12:03 +0000 (23:12 +0100)]
am7xxx: factor out an open_device() function from scan_devices()

This reduces the indentation level and makes the code more readable, now
it will be easier to improve open_device().

7 years agoam7xxx: make a comment clearer about SCAN_OP_OPEN_DEVICE
Antonio Ospite [Sun, 25 Jan 2015 21:12:27 +0000 (22:12 +0100)]
am7xxx: make a comment clearer about SCAN_OP_OPEN_DEVICE

7 years agoTODO: add another item about the style used in cmake files
Antonio Ospite [Sun, 25 Jan 2015 20:34:13 +0000 (21:34 +0100)]
TODO: add another item about the style used in cmake files

7 years agodoc/lsusb_dumps: add lsusb_Philips-PicoPix-1020.log
Antonio Ospite [Sun, 25 Jan 2015 20:33:34 +0000 (21:33 +0100)]
doc/lsusb_dumps: add lsusb_Philips-PicoPix-1020.log

7 years agoexamples: fix handling optional libraries in target_link_libraries()
Antonio Ospite [Tue, 30 Dec 2014 22:47:04 +0000 (23:47 +0100)]
examples: fix handling optional libraries in target_link_libraries()

am7xxx-play can compile just fine without XCB, but cmake was being
overly strict when XCB was missing.

8 years agoam7xxx-play: improve a comment
Antonio Ospite [Sat, 22 Nov 2014 23:03:08 +0000 (00:03 +0100)]
am7xxx-play: improve a comment

8 years agoam7xxx-play: fix a possible case of use before initialization
Antonio Ospite [Sat, 22 Nov 2014 22:58:36 +0000 (23:58 +0100)]
am7xxx-play: fix a possible case of use before initialization

The got_packet variable is assigned inside an internal "if" of the while
loop, but it is also used in the checks at the end of the while loop,
and it is possible to get to this part before having ever assigned the
variable, so in order to behave correctly initialize the variable before
the loop starts.

8 years agodoc: update
Antonio Ospite [Wed, 5 Nov 2014 10:38:19 +0000 (11:38 +0100)]
doc: update

In particular this fixes the following warnings from doxygen:

Warning: Tag `XML_SCHEMA' at line 235 of file `' has become obsolete.
         This tag has been removed.
Warning: Tag `XML_DTD' at line 236 of file `' has become obsolete.
         This tag has been removed.