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authorMichael Niedermayer <michaelni@gmx.at>2014-04-12 04:23:20 +0200
committerMichael Niedermayer <michaelni@gmx.at>2014-05-14 02:57:10 +0200
commit0aac9b76bc7770a90d1317f9979644aefb341ffa (patch)
treed5ed6667ccfd6a74f1a1f60726e529792505d54b /libavcodec/libx264.c
parentc3417ed7fd9239b349921ea15228682586daba88 (diff)
downloadffmpeg-0aac9b76bc7770a90d1317f9979644aefb341ffa.tar.gz
avcodec/libx264: Implement reference frame count limiting based on level
This makes libavcodec/libx264.c behave more similar to the x264 command line util Fixes Ticket3307 Implementation based on x264 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/libx264.c')
-rw-r--r--libavcodec/libx264.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index d9130b21ad..474c247f45 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -19,6 +19,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/mem.h"
@@ -426,6 +427,28 @@ static av_cold int X264_init(AVCodecContext *avctx)
x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
if (avctx->refs >= 0)
x4->params.i_frame_reference = avctx->refs;
+ else if (x4->level) {
+ int i;
+ int mbn = FF_CEIL_RSHIFT(avctx->width, 4) * FF_CEIL_RSHIFT(avctx->height, 4);
+ int level_id = -1;
+ char *tail;
+ int scale = X264_BUILD < 129 ? 384 : 1;
+
+ if (!strcmp(x4->level, "1b")) {
+ level_id = 9;
+ } else if (strlen(x4->level) <= 3){
+ level_id = av_strtod(x4->level, &tail) * 10 + 0.5;
+ if (*tail)
+ level_id = -1;
+ }
+ if (level_id <= 0)
+ av_log(avctx, AV_LOG_WARNING, "Failed to parse level\n");
+
+ for (i = 0; i<x264_levels[i].level_idc; i++)
+ if (x264_levels[i].level_idc == level_id)
+ x4->params.i_frame_reference = av_clip(x264_levels[i].dpb / mbn / scale, 1, x4->params.i_frame_reference);
+ }
+
if (avctx->trellis >= 0)
x4->params.analyse.i_trellis = avctx->trellis;
if (avctx->me_range >= 0)