From da5438a6ff69f9a2fea0662585d4207cc3636426 Mon Sep 17 00:00:00 2001
From: Isaac Connor <iconnor@15akronserver.point-one.com>
Date: Wed, 16 Aug 2017 12:16:15 -0400
Subject: [PATCH] detect hardware accel capabilities

---
 CMakeLists.txt           |  1 +
 src/zm_ffmpeg_camera.cpp | 14 ++++++++++++--
 src/zm_videostore.cpp    |  8 ++++++--
 zoneminder-config.cmake  |  1 +
 4 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ad65d1f7..d4c0bba2b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -557,6 +557,7 @@ if(NOT ZM_NO_FFMPEG)
 		mark_as_advanced(FORCE AVUTIL_LIBRARIES AVUTIL_INCLUDE_DIR)
 		check_include_file("libavutil/avutil.h" HAVE_LIBAVUTIL_AVUTIL_H)
 		check_include_file("libavutil/mathematics.h" HAVE_LIBAVUTIL_MATHEMATICS_H)
+		check_include_file("libavutil/hwcontext.h" HAVE_LIBAVUTIL_HWCONTEXT_H)
 		set(optlibsfound "${optlibsfound} AVUtil")
 	else(AVUTIL_LIBRARIES)
 		set(optlibsnotfound "${optlibsnotfound} AVUtil")
diff --git a/src/zm_ffmpeg_camera.cpp b/src/zm_ffmpeg_camera.cpp
index f0548498e..1edc00c83 100644
--- a/src/zm_ffmpeg_camera.cpp
+++ b/src/zm_ffmpeg_camera.cpp
@@ -25,8 +25,10 @@
 
 extern "C" {
 #include "libavutil/time.h"
-#include "libavutil/hwcontext.h"
-#include "libavutil/hwcontext_qsv.h"
+#if HAVE_AVUTIL_HWCONTEXT_H
+	#include "libavutil/hwcontext.h"
+	#include "libavutil/hwcontext_qsv.h"
+#endif
 }
 #ifndef AV_ERROR_MAX_STRING_SIZE
 #define AV_ERROR_MAX_STRING_SIZE 64
@@ -39,6 +41,7 @@ extern "C" {
 #endif
 
 
+#if HAVE_AVUTIL_HWCONTEXT_H
 static AVPixelFormat get_format(AVCodecContext *avctx, const enum AVPixelFormat *pix_fmts) {
   while (*pix_fmts != AV_PIX_FMT_NONE) {
     if (*pix_fmts == AV_PIX_FMT_QSV) {
@@ -76,6 +79,7 @@ static AVPixelFormat get_format(AVCodecContext *avctx, const enum AVPixelFormat
 
   return AV_PIX_FMT_NONE;
 }
+#endif
 
 FfmpegCamera::FfmpegCamera( int p_id, const std::string &p_path, const std::string &p_method, const std::string &p_options, int p_width, int p_height, int p_colours, int p_brightness, int p_contrast, int p_hue, int p_colour, bool p_capture, bool p_record_audio ) :
   Camera( p_id, FFMPEG_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture, p_record_audio ),
@@ -234,6 +238,7 @@ int FfmpegCamera::Capture( Image &image ) {
         continue;
       }
 
+#if HAVE_AVUTIL_HWCONTEXT_H
       if ( hwaccel ) {
         ret = avcodec_receive_frame( mVideoCodecContext, hwFrame );
         if ( ret < 0 ) {
@@ -250,6 +255,7 @@ int FfmpegCamera::Capture( Image &image ) {
           continue;
         }
       } else {
+#endif
         ret = avcodec_receive_frame( mVideoCodecContext, mRawFrame );
         if ( ret < 0 ) {
           av_strerror( ret, errbuf, AV_ERROR_MAX_STRING_SIZE );
@@ -258,7 +264,9 @@ int FfmpegCamera::Capture( Image &image ) {
           continue;
         }
 
+#if HAVE_AVUTIL_HWCONTEXT_H
       }
+#endif
 
       frameComplete = 1;
 # else
@@ -461,6 +469,7 @@ int FfmpegCamera::OpenFfmpeg() {
 	//mVideoCodecContext->flags2 |= CODEC_FLAG2_FAST | CODEC_FLAG2_CHUNKS | CODEC_FLAG_LOW_DELAY;  // Enable faster H264 decode.
 	mVideoCodecContext->flags2 |= CODEC_FLAG2_FAST | CODEC_FLAG_LOW_DELAY;
 
+#if HAVE_AVUTIL_HWCONTEXT_H
   if ( mVideoCodecContext->codec_id == AV_CODEC_ID_H264 ) {
 
     //vaapi_decoder = new VAAPIDecoder();
@@ -497,6 +506,7 @@ int FfmpegCamera::OpenFfmpeg() {
     }
 
   } // end if h264
+#endif
 
   if ( (!mVideoCodec) and ( (mVideoCodec = avcodec_find_decoder(mVideoCodecContext->codec_id)) == NULL ) ) {
   // Try and get the codec from the codec context
diff --git a/src/zm_videostore.cpp b/src/zm_videostore.cpp
index b270649ca..cba27cef6 100644
--- a/src/zm_videostore.cpp
+++ b/src/zm_videostore.cpp
@@ -623,7 +623,7 @@ bool VideoStore::setup_resampler() {
 void VideoStore::dumpPacket( AVPacket *pkt ){
   char b[10240];
 
-  snprintf(b, sizeof(b), " pts: %" PRId64 ", dts: %" PRId64 ", data: %p, size: %d, sindex: %d, dflags: %04x, s-pos: %" PRId64 ", c-duration: %" PRId64 "\n"
+  snprintf(b, sizeof(b), " pts: %" PRId64 ", dts: %" PRId64 ", data: %p, size: %d, sindex: %d, dflags: %04x, s-pos: %" PRId64 ", c-duration: %d\n"
       , pkt->pts
       , pkt->dts
       , pkt->data
@@ -643,12 +643,16 @@ int VideoStore::writeVideoFramePacket( AVPacket *ipkt ) {
   opkt.dts = video_next_dts;
   opkt.duration = 0;
 
-  unsigned int duration;
+  int duration;
   if ( ! video_last_pts ) {
     duration = 0;
   } else {
     duration = av_rescale_q( ipkt->pts - video_last_pts, video_input_stream->time_base, video_output_stream->time_base);
     Debug(1, "duration calc: pts(%d) - last_pts(%d) = (%d)", ipkt->pts, video_last_pts, duration );
+	if ( duration < 0 ) {
+		
+		duration = ipkt->duration;
+	}
   }
   
 //#if ( 0 && video_last_pts && ( ipkt->duration == AV_NOPTS_VALUE || ! ipkt->duration ) ) {
diff --git a/zoneminder-config.cmake b/zoneminder-config.cmake
index 3b35684b5..8641bb4a8 100644
--- a/zoneminder-config.cmake
+++ b/zoneminder-config.cmake
@@ -51,6 +51,7 @@
 #cmakedefine HAVE_LIBAVUTIL 1
 #cmakedefine HAVE_LIBAVUTIL_AVUTIL_H 1
 #cmakedefine HAVE_LIBAVUTIL_MATHEMATICS_H 1
+#cmakedefine HAVE_LIBAVUTIL_HWCONTEXT_H 0
 #cmakedefine HAVE_LIBSWSCALE 1
 #cmakedefine HAVE_LIBSWSCALE_SWSCALE_H 1
 #cmakedefine HAVE_LIBAVRESAMPLE 1