[FFmpeg-devel] [PATCH] libkvazaar: Set frame rate as a rational number

[Arttu Ylä-Outinen]

Updates libkvazaar to pass the exact frame rate to Kvazaar by setting
the numerator and denominator separately instead of a single floating
point number. The exact frame rate is needed for writing timing info to
the bitstream.

Requires Kvazaar version 0.8.1.

Signed-off-by: Arttu Ylä-Outinen <arttu.yla-outinen at tut.fi>
---
 configure               | 2 +-
 libavcodec/libkvazaar.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 7cef6f5..1b004db 100755
--- a/configure
+++ b/configure
@@ -5452,7 +5452,7 @@ enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
                                done || die "ERROR: libgsm not found"; }
 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
-enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
+enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
diff --git a/libavcodec/libkvazaar.c b/libavcodec/libkvazaar.c
index e58405d..87b802f 100644
--- a/libavcodec/libkvazaar.c
+++ b/libavcodec/libkvazaar.c
@@ -75,8 +75,8 @@ static av_cold int libkvazaar_init(AVCodecContext *avctx)
     cfg->width  = avctx->width;
     cfg->height = avctx->height;
 
-    cfg->framerate =
-      avctx->time_base.den / (double)(avctx->time_base.num * avctx->ticks_per_frame);
+    cfg->framerate_num   = avctx->time_base.den;
+    cfg->framerate_denom = avctx->time_base.num * avctx->ticks_per_frame;
     cfg->target_bitrate = avctx->bit_rate;
     cfg->vui.sar_width  = avctx->sample_aspect_ratio.num;
     cfg->vui.sar_height = avctx->sample_aspect_ratio.den;
-- 
2.7.0