Make an aqscale parameter (equivalent to -aq option in ffmpeg) available
in mencoder to get bitrate control for vorbis to work.

Original patch by Debargha Mukherjee.

Signed-off-by: Tobias Diedrich <ranma@google.com>

Index: mplayer-patchset1/libmpcodecs/ae_lavc.c
===================================================================
--- mplayer-patchset1.orig/libmpcodecs/ae_lavc.c	2010-12-21 21:17:42.269376000 +0100
+++ mplayer-patchset1/libmpcodecs/ae_lavc.c	2010-12-22 11:35:54.133756000 +0100
@@ -195,6 +195,12 @@
                 lavc_actx->bit_rate = encoder->params.bitrate = lavc_param_abitrate * 1000;
         else
                 lavc_actx->bit_rate = encoder->params.bitrate = lavc_param_abitrate;
+
+        if(lavc_param_aqscale >= 0.0){
+                lavc_actx->flags |= CODEC_FLAG_QSCALE;
+                lavc_actx->global_quality = (int)(FF_QP2LAMBDA * lavc_param_aqscale + 0.5);
+        }
+
         if(lavc_param_audio_avopt){
             if(parse_avopts(lavc_actx, lavc_param_audio_avopt) < 0){
                 mp_msg(MSGT_MENCODER,MSGL_ERR, "Your options /%s/ look like gibberish to me pal\n", lavc_param_audio_avopt);
Index: mplayer-patchset1/libmpcodecs/ve.h
===================================================================
--- mplayer-patchset1.orig/libmpcodecs/ve.h	2010-12-21 21:17:42.279364000 +0100
+++ mplayer-patchset1/libmpcodecs/ve.h	2010-12-22 11:35:54.135757000 +0100
@@ -28,6 +28,7 @@
 extern char *lavc_param_acodec;
 extern char *lavc_param_audio_avopt;
 extern int   lavc_param_abitrate;
+extern float lavc_param_aqscale;
 extern int   lavc_param_atag;
 extern int   lavc_param_audio_global_header;
 
Index: mplayer-patchset1/libmpcodecs/ve_lavc.c
===================================================================
--- mplayer-patchset1.orig/libmpcodecs/ve_lavc.c	2010-12-22 11:35:53.918760000 +0100
+++ mplayer-patchset1/libmpcodecs/ve_lavc.c	2010-12-22 11:35:54.139757000 +0100
@@ -177,6 +177,7 @@
 char *lavc_param_acodec = "mp2";
 int lavc_param_atag = 0;
 int lavc_param_abitrate = 224;
+float lavc_param_aqscale = -1;
 int lavc_param_audio_global_header= 0;
 static char *lavc_param_avopt = NULL;
 char *lavc_param_audio_avopt = NULL;
@@ -188,6 +189,7 @@
 const m_option_t lavcopts_conf[]={
 	{"acodec", &lavc_param_acodec, CONF_TYPE_STRING, 0, 0, 0, NULL},
 	{"abitrate", &lavc_param_abitrate, CONF_TYPE_INT, CONF_RANGE, 1, 1000000, NULL},
+	{"aqscale", &lavc_param_aqscale, CONF_TYPE_FLOAT, CONF_RANGE, 0.0, 99999.0, NULL},
 	{"atag", &lavc_param_atag, CONF_TYPE_INT, CONF_RANGE, 0, 0xffff, NULL},
 	{"vcodec", &lavc_param_vcodec, CONF_TYPE_STRING, 0, 0, 0, NULL},
 	{"vbitrate", &lavc_param_vbitrate, CONF_TYPE_INT, CONF_RANGE, 4, MAX_BITRATE, NULL},
Index: mplayer-patchset1/DOCS/man/de/mplayer.1
===================================================================
--- mplayer-patchset1.orig/DOCS/man/de/mplayer.1	2010-12-22 12:14:27.048185000 +0100
+++ mplayer-patchset1/DOCS/man/de/mplayer.1	2010-12-22 12:16:42.474528000 +0100
@@ -8190,6 +8190,10 @@
 Audiobitrate in kbps (Standard: 224)
 .
 .TP
+.B aqscale=<Wert>
+Audioqualität (Codec-spezifisch)
+.
+.TP
 .B atag=<Wert>
 Benutze die angegebene Windows-Audioformatkennung (z.B.\& atag=0x55).
 .
Index: mplayer-patchset1/DOCS/man/en/mplayer.1
===================================================================
--- mplayer-patchset1.orig/DOCS/man/en/mplayer.1	2010-12-22 12:14:24.251421000 +0100
+++ mplayer-patchset1/DOCS/man/en/mplayer.1	2010-12-22 12:17:09.607385000 +0100
@@ -8322,6 +8322,10 @@
 audio bitrate in kbps (default: 224)
 .
 .TP
+.B aqscale=<value>
+audio quality (codec-specific)
+.
+.TP
 .B atag=<value>
 Use the specified Windows audio format tag (e.g.\& atag=0x55).
 .