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omx: Add support for broadcom OMX on raspberry pi

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The raspberry pi uses the alternative API/ABI for OMX; this makes
such builds incompatible with all the normal OpenMAX implementations.
Since this can't easily be detected at configure time (one can
build for raspberry pi's OMX just fine using the generic, pristine
Khronos OpenMAX IL headers, no need for their own extensions),
require a separate configure switch for it instead.

The broadcom host library can't be unloaded once loaded and started;
the deinit function that it provides is a no-op, and after started,
it has got background threads running, so dlclosing it makes it
crash.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2012-07-24 21:33:42 +00:00
parent e8919ec486
commit f1cd9b03f3
4 changed files with 54 additions and 9 deletions
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9
configure vendored
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@@ -145,6 +145,7 @@ Hardware-accelerated decoding/encoding:
--enable-mmal enable decoding via MMAL [no]
--enable-nvenc enable encoding via NVENC [no]
--enable-omx enable encoding via OpenMAX IL [no]
--enable-omx-rpi enable encoding via OpenMAX IL for Raspberry Pi [no]
Individual component options:
--disable-everything disable all components listed below
@@ -1259,6 +1260,7 @@ EXTERNAL_LIBRARY_LIST="
FEATURE_LIST="
gray
hardcoded_tables
omx_rpi
runtime_cpudetect
safe_bitstream_reader
shared
@@ -4621,7 +4623,12 @@ enabled mmal && { check_lib interface/mmal/mmal.h mmal_port_connect
check_lib interface/mmal/mmal.h mmal_port_connect ; }
check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
die "ERROR: mmal not found"; }
enabled omx && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
enabled omx_rpi && enable omx
enabled omx && { check_header OMX_Core.h ||
{ ! enabled cross_compile && enabled omx_rpi && {
add_cflags -isystem/opt/vc/include/IL ; }
check_header OMX_Core.h ; } ||
die "ERROR: OpenMAX IL headers not found"; }
enabled openssl && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||