avcodec: remove 'lowres' option since it is ignored by libav

modules/codec/avcodec/avcodec.c

@@ -119,9 +119,6 @@ vlc_module_begin ()
     add_integer ( "avcodec-vismv", 0, VISMV_TEXT, VISMV_LONGTEXT,
         true )
     add_obsolete_integer ( "ffmpeg-lowres" ) /* removed since 2.1.0 */
-    add_integer ( "avcodec-lowres", 0, LOWRES_TEXT, LOWRES_LONGTEXT,
-        true )
-        change_integer_range( 0, 2 )
     add_obsolete_bool( "ffmpeg-fast" ) /* removed since 2.1.0 */
     add_bool( "avcodec-fast", false, FAST_TEXT, FAST_LONGTEXT, false )
     add_obsolete_integer ( "ffmpeg-skiploopfilter" ) /* removed since 2.1.0 */

modules/codec/avcodec/avcodec.h

@@ -129,10 +129,6 @@ int ffmpeg_OpenCodec( decoder_t *p_dec );
     "4 - visualize backward predicted MVs of B frames\n" \
     "To visualize all vectors, the value should be 7." )
 
-#define LOWRES_TEXT N_( "Low resolution decoding" )
-#define LOWRES_LONGTEXT N_( "Only decode a low resolution version of " \
-    "the video. This requires less processing power" )
-
 #define SKIPLOOPF_TEXT N_( "Skip the loop filter for H.264 decoding" )
 #define SKIPLOOPF_LONGTEXT N_( "Skipping the loop filter (aka deblocking) " \
     "usually has a detrimental effect on quality. However it provides a big " \

modules/codec/avcodec/video.c

@@ -225,9 +225,6 @@ int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
     i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
     if( i_val ) p_sys->p_context->debug_mv = i_val;
 
-    i_val = var_CreateGetInteger( p_dec, "avcodec-lowres" );
-    if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
-
     i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
     if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
     else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;