motion estimation bitrate penalty compensation

Originally committed as revision 4092 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -199,6 +199,7 @@ static int video_profile = FF_PROFILE_UNKNOWN;
 static int video_level = FF_LEVEL_UNKNOWN;
 static int nsse_weight = 8;
 static int subpel_quality= 8;
+static int me_penalty_compensation= 256;
 static int lowres= 0;
 static int frame_skip_threshold= 0;
 static int frame_skip_factor= 0;
@@ -3324,6 +3325,7 @@ static void opt_output_file(const char *filename)
                 video_enc->level= video_level;
                 video_enc->nsse_weight= nsse_weight;
                 video_enc->me_subpel_quality= subpel_quality;
+                video_enc->me_penalty_compensation= me_penalty_compensation;
                 video_enc->frame_skip_threshold= frame_skip_threshold;
                 video_enc->frame_skip_factor= frame_skip_factor;
                 video_enc->frame_skip_exp= frame_skip_exp;
@@ -4079,6 +4081,7 @@ const OptionDef options[] = {
     { "vlevel", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_level}, "level", "" },
     { "nssew", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&nsse_weight}, "weight", "" },
     { "subq", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&subpel_quality}, "", "" },
+    { "mepc", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&me_penalty_compensation}, "motion estimation bitrate penalty compensation", "factor (1.0 = 256)" },
     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&lowres}, "", "" },
     { "vtag", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_tag}, "force video tag/fourcc", "fourcc/tag" },
     { "skip_threshold", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&frame_skip_threshold}, "frame skip threshold", "threshold" },

libavcodec/avcodec.h

@@ -17,7 +17,7 @@ extern "C" {
 
 #define FFMPEG_VERSION_INT     0x000409
 #define FFMPEG_VERSION         "0.4.9-pre1"
-#define LIBAVCODEC_BUILD       4749
+#define LIBAVCODEC_BUILD       4750
 
 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
 #define LIBAVCODEC_VERSION     FFMPEG_VERSION
@@ -1781,6 +1781,13 @@ typedef struct AVCodecContext {
      * - decoding: unused
      */
     int mb_lmax;
+
+    /**
+     * 
+     * - encoding: set by user.
+     * - decoding: unused
+     */
+    int me_penalty_compensation;
 } AVCodecContext;
 
 

libavcodec/mpegvideo.c

@@ -5251,6 +5251,8 @@ static void encode_picture(MpegEncContext *s, int picture_number)
 
     /* Estimate motion for every MB */
     if(s->pict_type != I_TYPE){
+        s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
+        s->lambda2= (s->lambda2* s->avctx->me_penalty_compensation + 128)>>8;
         if(s->pict_type != B_TYPE && s->avctx->me_threshold==0){
             if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
                 s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);

libavcodec/utils.c

@@ -458,6 +458,7 @@ void avcodec_get_context_defaults(AVCodecContext *s){
     s->ildct_cmp= FF_CMP_VSAD;
     s->profile= FF_PROFILE_UNKNOWN;
     s->level= FF_LEVEL_UNKNOWN;
+    s->me_penalty_compensation= 256;
     
     s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
     s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;