[FFmpeg-devel] [PATCH] avcodec/libwebpenc: add quality option
Michael Niedermayer
michaelni at gmx.at
Sat Nov 1 20:44:30 CET 2014
previously quality could only be set through qscale/global_quality but the scale
was inverted. Using a separate option avoids the confusion from qscale working
backward.
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
libavcodec/libwebpenc.c | 8 ++++----
libavcodec/version.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/libavcodec/libwebpenc.c b/libavcodec/libwebpenc.c
index c4c880f..95d56ac 100644
--- a/libavcodec/libwebpenc.c
+++ b/libavcodec/libwebpenc.c
@@ -65,10 +65,9 @@ static av_cold int libwebp_encode_init(AVCodecContext *avctx)
LibWebPContext *s = avctx->priv_data;
int ret;
- if (avctx->global_quality < 0)
- avctx->global_quality = 75 * FF_QP2LAMBDA;
- s->quality = av_clipf(avctx->global_quality / (float)FF_QP2LAMBDA,
- 0.0f, 100.0f);
+ if (avctx->global_quality >= 0)
+ s->quality = av_clipf(avctx->global_quality / (float)FF_QP2LAMBDA,
+ 0.0f, 100.0f);
if (avctx->compression_level < 0 || avctx->compression_level > 6) {
av_log(avctx, AV_LOG_WARNING, "invalid compression level: %d\n",
@@ -327,6 +326,7 @@ static const AVOption options[] = {
{ "text", "text-like", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_TEXT }, 0, 0, VE, "preset" },
{ "cr_threshold","Conditional replenishment threshold", OFFSET(cr_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
{ "cr_size" ,"Conditional replenishment block size", OFFSET(cr_size) , AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 256, VE },
+ { "quality" ,"Quality", OFFSET(quality), AV_OPT_TYPE_FLOAT, { .dbl = 75 }, 0, 100, VE },
{ NULL },
};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index ea9207a..c0fd259 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -30,7 +30,7 @@
#define LIBAVCODEC_VERSION_MAJOR 56
#define LIBAVCODEC_VERSION_MINOR 10
-#define LIBAVCODEC_VERSION_MICRO 101
+#define LIBAVCODEC_VERSION_MICRO 102
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
--
1.7.9.5
More information about the ffmpeg-devel
mailing list