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Use libavcodec's VA-API decoding.

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Leverages libavcodec's hw decode support to provide VA-API based
hardware decoding. Depends on the local build of ffmpeg having hardware
VA-API support compiled in and the appropriate libva drivers and
libraries installed.
This commit is contained in:
Sri Ramanujam 2018-01-27 01:10:51 -05:00
parent 670573920d
commit bedc1ac4c6
4 changed files with 131 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
CMakeLists.txt
View File

@ -663,6 +663,10 @@ set(FFMPEG_FEATURE_TYPE "RECOMMENDED")
set(FFMPEG_FEATURE_PURPOSE "multimedia")
set(FFMPEG_FEATURE_DESCRIPTION "multimedia redirection, audio and video playback")
set(VAAPI_FEATURE_TYPE "OPTIONAL")
set(VAAPI_FEATURE_PURPOSE "multimedia")
set(VAAPI_FEATURE_DESCRIPTION "VA-API hardware acceleration for video playback")
set(GSTREAMER_0_10_FEATURE_TYPE "OPTIONAL")
set(GSTREAMER_0_10_FEATURE_PURPOSE "multimedia")
set(GSTREAMER_0_10_FEATURE_DESCRIPTION "multimedia redirection, audio and video playback, gstreamer 0.10 version")
@ -706,6 +710,7 @@ if(WIN32)
set(CUPS_FEATURE_TYPE "DISABLED")
set(PCSC_FEATURE_TYPE "DISABLED")
set(FFMPEG_FEATURE_TYPE "DISABLED")
set(VAAPI_FEATURE_TYPE "DISABLED")
set(GSTREAMER_1_0_FEATURE_TYPE "DISABLED")
set(GSTREAMER_0_10_FEATURE_TYPE "OPTIONAL")
set(OPENSLES_FEATURE_TYPE "DISABLED")
@ -714,6 +719,7 @@ endif()
if(APPLE)
set(DIRECTFB_FEATURE_TYPE "DISABLED")
set(FFMPEG_FEATURE_TYPE "OPTIONAL")
set(VAAPI_FEATURE_TYPE "DISABLED")
set(GSTREAMER_1_0_FEATURE_TYPE "OPTIONAL")
set(X11_FEATURE_TYPE "OPTIONAL")
set(WAYLAND_FEATURE_TYPE "DISABLED")
@ -755,6 +761,7 @@ if(ANDROID)
set(CUPS_FEATURE_TYPE "DISABLED")
set(PCSC_FEATURE_TYPE "DISABLED")
set(FFMPEG_FEATURE_TYPE "DISABLED")
set(VAAPI_FEATURE_TYPE "DISABLED")
set(GSTREAMER_1_0_FEATURE_TYPE "DISABLED")
set(GSTREAMER_0_10_FEATURE_TYPE "DISABLED")
set(OPENSLES_FEATURE_TYPE "REQUIRED")

2
config.h.in
View File

@ -58,6 +58,8 @@
#cmakedefine WITH_X264
#cmakedefine WITH_MEDIA_FOUNDATION
#cmakedefine WITH_VAAPI
/* Plugins */
#cmakedefine BUILTIN_CHANNELS
#cmakedefine WITH_RDPDR

1
include/freerdp/codec/h264.h
View File

@ -75,7 +75,6 @@ struct _H264_CONTEXT
void* pSystemData;
H264_CONTEXT_SUBSYSTEM* subsystem;
};
#ifdef __cplusplus
extern "C" {
#endif

125
libfreerdp/codec/h264_ffmpeg.c
View File

@ -18,13 +18,22 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/wlog.h>
#include <freerdp/log.h>
#include <freerdp/codec/h264.h>
#include <libavcodec/avcodec.h>
#include <libavutil/avutil.h>
#include <libavutil/opt.h>
#include <libavutil/mem.h>
#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(55, 9, 0)
#include <libavutil/hwcontext.h>
#else
#pragma warning You have asked for VA-API decoding, but your version of libavutil is too old! Disabling.
#undef WITH_VAAPI
#endif
#define TAG FREERDP_TAG("codec")
@ -56,6 +65,10 @@ static inline char* error_string(char* errbuf, size_t errbuf_size, int errnum)
error_string((char[64]){0}, 64, errnum)
#endif
#ifdef WITH_VAAPI
#define VAAPI_DEVICE "/dev/dri/renderD128"
#endif
struct _H264_CONTEXT_LIBAVCODEC
{
AVCodec* codecDecoder;
@ -65,6 +78,11 @@ struct _H264_CONTEXT_LIBAVCODEC
AVCodecParserContext* codecParser;
AVFrame* videoFrame;
AVPacket packet;
#ifdef WITH_VAAPI
AVBufferRef* hwctx;
AVFrame* hwVideoFrame;
enum AVPixelFormat hw_pix_fmt;
#endif
};
typedef struct _H264_CONTEXT_LIBAVCODEC H264_CONTEXT_LIBAVCODEC;
@ -197,20 +215,31 @@ static int libavcodec_decompress(H264_CONTEXT* h264, const BYTE* pSrcData,
if (status < 0)
{
WLog_ERR(TAG, "Failed to decode video frame (status=%d)", status);
WLog_ERR(TAG, "Failed to decode video frame (%s)", av_err2str(status));
return -1;
}
sys->videoFrame->format = AV_PIX_FMT_YUV420P;
do
{
#ifdef WITH_VAAPI
status = avcodec_receive_frame(sys->codecDecoderContext, sys->hwVideoFrame);
#else
status = avcodec_receive_frame(sys->codecDecoderContext, sys->videoFrame);
#endif
}
while (status == AVERROR(EAGAIN));
gotFrame = (status == 0);
#else
#ifdef WITH_VAAPI
status = avcodec_decode_video2(sys->codecDecoderContext, sys->hwVideoFrame, &gotFrame,
&sys->packet);
#else
status = avcodec_decode_video2(sys->codecDecoderContext, sys->videoFrame, &gotFrame,
&sys->packet);
#endif
#endif
if (status < 0)
@ -219,6 +248,28 @@ static int libavcodec_decompress(H264_CONTEXT* h264, const BYTE* pSrcData,
return -1;
}
#ifdef WITH_VAAPI
if (sys->hwctx)
{
if (sys->hwVideoFrame->format == sys->hw_pix_fmt)
{
sys->videoFrame->width = sys->hwVideoFrame->width;
sys->videoFrame->height = sys->hwVideoFrame->height;
status = av_hwframe_transfer_data(sys->videoFrame, sys->hwVideoFrame, 0);
}
else
{
status = av_frame_copy(sys->videoFrame, sys->hwVideoFrame);
}
}
else
{
status = av_frame_copy(sys->videoFrame, sys->hwVideoFrame);
}
gotFrame = (status == 0);
#endif
#if 0
WLog_INFO(TAG,
"libavcodec_decompress: frame decoded (status=%d, gotFrame=%d, width=%d, height=%d, Y=[%p,%d], U=[%p,%d], V=[%p,%d])",
@ -361,6 +412,24 @@ static void libavcodec_uninit(H264_CONTEXT* h264)
#endif
}
#ifdef WITH_VAAPI
if (sys->hwVideoFrame)
{
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 18, 102)
av_frame_free(&sys->hwVideoFrame);
#else
av_free(sys->hwVideoFrame);
#endif
}
if (sys->hwctx)
{
av_buffer_unref(&sys->hwctx);
}
#endif
if (sys->codecParser)
av_parser_close(sys->codecParser);
@ -379,6 +448,25 @@ static void libavcodec_uninit(H264_CONTEXT* h264)
h264->pSystemData = NULL;
}
#ifdef WITH_VAAPI
static enum AVPixelFormat libavcodec_get_format(struct AVCodecContext* ctx,
const enum AVPixelFormat* fmts)
{
H264_CONTEXT_LIBAVCODEC* sys = (H264_CONTEXT_LIBAVCODEC*) ctx->opaque;
const enum AVPixelFormat* p;
for (p = fmts; *p != AV_PIX_FMT_NONE; p++)
{
if (*p == sys->hw_pix_fmt)
{
return *p;
}
}
return AV_PIX_FMT_NONE;
}
#endif
static BOOL libavcodec_init(H264_CONTEXT* h264)
{
H264_CONTEXT_LIBAVCODEC* sys;
@ -415,6 +503,25 @@ static BOOL libavcodec_init(H264_CONTEXT* h264)
sys->codecDecoderContext->flags |= AV_CODEC_FLAG_TRUNCATED;
}
#ifdef WITH_VAAPI
if (!sys->hwctx)
{
int ret = av_hwdevice_ctx_create(&sys->hwctx, AV_HWDEVICE_TYPE_VAAPI, VAAPI_DEVICE, NULL, 0);
if (ret < 0)
{
WLog_ERR(TAG, "Could not initialize hw decoder: %s", av_err2str(ret));
goto EXCEPTION;
}
}
sys->codecDecoderContext->get_format = libavcodec_get_format;
sys->hw_pix_fmt = AV_PIX_FMT_VAAPI;
sys->codecDecoderContext->hw_device_ctx = av_buffer_ref(sys->hwctx);
sys->codecDecoderContext->opaque = (void*) sys;
#endif
if (avcodec_open2(sys->codecDecoderContext, sys->codecDecoder, NULL) < 0)
{
WLog_ERR(TAG, "Failed to open libav codec");
@ -432,6 +539,9 @@ static BOOL libavcodec_init(H264_CONTEXT* h264)
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 18, 102)
sys->videoFrame = av_frame_alloc();
#ifdef WITH_VAAPI
sys->hwVideoFrame = av_frame_alloc();
#endif
#else
sys->videoFrame = avcodec_alloc_frame();
#endif
@ -442,6 +552,15 @@ static BOOL libavcodec_init(H264_CONTEXT* h264)
goto EXCEPTION;
}
#ifdef WITH_VAAPI
if (!sys->hwVideoFrame)
{
WLog_ERR(TAG, "Failed to allocate libav hw frame");
goto EXCEPTION;
}
#endif
sys->videoFrame->pts = 0;
return TRUE;
EXCEPTION: