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Enable hwaccel h264 encoding on raspberry pi

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Enable hardware accelerated H264 and MPEG4 video encoding on raspberry
pi via libopenmax.
This commit is contained in:
Joo Aun Saw 2017-06-15 15:51:01 +10:00
parent f3f1b6c292
commit 267f056e49
8 changed files with 59 additions and 0 deletions
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1
board/raspberrypi/overlay/opt/vc/lib Symbolic link
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@ -0,0 +1 @@
../../usr/lib

1
board/raspberrypi2/overlay/opt/vc/lib Symbolic link
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@ -0,0 +1 @@
../../usr/lib

1
board/raspberrypi3/overlay/opt/vc/lib Symbolic link
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@ -0,0 +1 @@
../../usr/lib

1
configs/raspberrypi_defconfig
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@ -29,6 +29,7 @@ BR2_PACKAGE_FFMPEG=y
BR2_PACKAGE_FFMPEG_GPL=y
BR2_PACKAGE_FFMPEG_NONFREE=y
BR2_PACKAGE_FFMPEG_SWSCALE=y
BR2_PACKAGE_FFMPEG_RPI_HW_CODECS=y
BR2_PACKAGE_LIBWEBCAM=y
BR2_PACKAGE_MOTION=y
BR2_PACKAGE_STREAMEYE=y

6
package/ffmpeg/Config.in
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@ -167,6 +167,12 @@ config BR2_PACKAGE_FFMPEG_OUTDEVS
bool "Enable output devices"
default y
config BR2_PACKAGE_FFMPEG_RPI_HW_CODECS
bool "Enable rpi hardware accelerated codecs"
depends on BR2_PACKAGE_RPI_USERLAND
help
Enable HW accelerated codecs on Raspberry pi.
config BR2_PACKAGE_FFMPEG_EXTRACONF
string "Additional parameters for ./configure"
default ""

5
package/ffmpeg/ffmpeg.mk
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@ -473,6 +473,11 @@ else ifneq ($(call qstrip,$(BR2_GCC_TARGET_ARCH)),)
FFMPEG_CONF_OPTS += --cpu=$(BR2_GCC_TARGET_ARCH)
endif
ifeq ($(BR2_PACKAGE_FFMPEG_RPI_HW_CODECS),y)
FFMPEG_DEPENDENCIES += rpi-userland
FFMPEG_CONF_OPTS += --enable-omx --enable-omx-rpi --enable-mmal --extra-cflags=-I../../staging/usr/include/IL/
endif
FFMPEG_CONF_OPTS += $(call qstrip,$(BR2_PACKAGE_FFMPEG_EXTRACONF))

19
package/motion/0003-prefer-omx-encoders.patch Normal file
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@ -0,0 +1,19 @@
diff --git a/ffmpeg.c b/ffmpeg.c
index e7cab9f..3f48db8 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -380,7 +380,13 @@ struct ffmpeg *ffmpeg_open(const char *ffmpeg_video_codec, char *filename,
ffmpeg->video_st = NULL;
if (ffmpeg->oc->oformat->video_codec != MY_CODEC_ID_NONE) {
- codec = avcodec_find_encoder(ffmpeg->oc->oformat->video_codec);
+ codec = NULL;
+ if (ffmpeg->oc->oformat->video_codec == AV_CODEC_ID_H264)
+ codec = avcodec_find_encoder_by_name("h264_omx");
+ else if (ffmpeg->oc->oformat->video_codec == AV_CODEC_ID_MPEG4)
+ codec = avcodec_find_encoder_by_name("mpeg4_omx");
+ if (!codec)
+ codec = avcodec_find_encoder(ffmpeg->oc->oformat->video_codec);
if (!codec) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "%s: Codec %s not found", ffmpeg_video_codec);
ffmpeg_cleanups(ffmpeg);

25
package/motion/0004-h264-best-crf-quality.patch Normal file
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@ -0,0 +1,25 @@
diff --git a/ffmpeg.c b/ffmpeg.c
index 3f48db8..1819e35 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -419,6 +419,8 @@ struct ffmpeg *ffmpeg_open(const char *ffmpeg_video_codec, char *filename,
c->codec_id = ffmpeg->oc->oformat->video_codec;
c->codec_type = AVMEDIA_TYPE_VIDEO;
c->bit_rate = bps;
+ if (ffmpeg->oc->oformat->video_codec == AV_CODEC_ID_H264)
+ av_opt_set(c->priv_data, "crf", "1", AV_OPT_SEARCH_CHILDREN);
c->width = width;
c->height = height;
c->time_base.num = 1;
diff --git a/ffmpeg.h b/ffmpeg.h
index ccdc0f1..7067569 100644
--- a/ffmpeg.h
+++ b/ffmpeg.h
@@ -13,6 +13,7 @@
#include <libavformat/avformat.h>
#include <libavutil/imgutils.h>
#include <libavutil/mathematics.h>
+#include <libavutil/opt.h>
#if (LIBAVFORMAT_VERSION_MAJOR >= 56)