[vlc-devel] [PATCH] Added new configurable parameter qcompress to ffmpeg for JPEG
noxelia at gmail.com
noxelia at gmail.com
Tue Aug 19 16:32:54 CEST 2008
From: basOS G <noxelia 4t gmail . com>
---
modules/codec/avcodec/avcodec.c | 4 +++-
modules/codec/avcodec/avcodec.h | 3 +++
modules/codec/avcodec/encoder.c | 9 ++++++++-
3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/modules/codec/avcodec/avcodec.c b/modules/codec/avcodec/avcodec.c
index 3fa80a5..30dde7e 100644
--- a/modules/codec/avcodec/avcodec.c
+++ b/modules/codec/avcodec/avcodec.c
@@ -185,7 +185,9 @@ vlc_module_begin();
ENC_LUMA_ELIM_TEXT, ENC_LUMA_ELIM_LONGTEXT, true );
add_integer( ENC_CFG_PREFIX "chroma-elim-threshold", 0, NULL,
ENC_CHROMA_ELIM_TEXT, ENC_CHROMA_ELIM_LONGTEXT, true );
-
+//MODA JPEG Q
+ add_float_with_range( ENC_CFG_PREFIX "qcompress", 0.5, 0.0, 1.0, NULL,
+ ENC_QCOMPRESS_TEXT, NULL, true );
#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
/* Audio AAC encoder profile */
add_string( ENC_CFG_PREFIX "aac-profile", "main", NULL,
diff --git a/modules/codec/avcodec/avcodec.h b/modules/codec/avcodec/avcodec.h
index 591d125..0c57840 100644
--- a/modules/codec/avcodec/avcodec.h
+++ b/modules/codec/avcodec/avcodec.h
@@ -224,6 +224,9 @@ void EndAudioDec( decoder_t *p_dec );
"the PSNR isn't much changed (default: 0.0). The H264 specification " \
"recommends 7." )
+//MODA JPEG Q
+#define ENC_QCOMPRESS_TEXT N_("Q Compress Value")
+
#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
#define ENC_PROFILE_TEXT N_( "Specify AAC audio profile to use" )
#define ENC_PROFILE_LONGTEXT N_( "Specify the AAC audio profile to use " \
diff --git a/modules/codec/avcodec/encoder.c b/modules/codec/avcodec/encoder.c
index 95eef57..b314e75 100644
--- a/modules/codec/avcodec/encoder.c
+++ b/modules/codec/avcodec/encoder.c
@@ -143,6 +143,7 @@ struct encoder_sys_t
int i_quality; /* for VBR */
float f_lumi_masking, f_dark_masking, f_p_masking, f_border_masking;
int i_luma_elim, i_chroma_elim;
+ float f_qcompress ; /* MODA for JPEG QAULITY */
#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
int i_aac_profile; /* AAC profile to use.*/
#endif
@@ -161,6 +162,7 @@ static const char *const ppsz_enc_options[] = {
#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(40<<8)+4)
"aac-profile",
#endif
+/*MODA JPEG Q*/ "qcompress",
NULL
};
@@ -423,7 +425,12 @@ int OpenEncoder( vlc_object_t *p_this )
/* Defaults from ffmpeg.c */
p_context->qblur = 0.5;
- p_context->qcompress = 0.5;
+ //MODA JPEG Q was 0.5
+ var_Get( p_enc, ENC_CFG_PREFIX "qcompress", &val );
+ if( val.f_float < 0.01 || val.f_float > 1.00 ) val.f_float = 0.5;
+ p_context->qcompress = val.f_float ;
+ msg_Dbg( p_enc, "Q Compress Value= %.2f", p_context->qcompress );
+
p_context->b_quant_offset = 1.25;
p_context->b_quant_factor = 1.25;
p_context->i_quant_offset = 0.0;
--
1.5.4.3
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