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vpx_temporal_scalable_patterns: set rc_target_bitrate correct.

Current setting was specific to 1 layer case.
rc_target_bitrate is total bitrate for whole stream,
so set it to ts_target_bitrate for highest/top temporal layer.

Change-Id: I83de73364956fa21c0a7c971c9f390d4840457e6

--- a/examples/vpx_temporal_scalable_patterns.c

+++ b/examples/vpx_temporal_scalable_patterns.c

@@ -516,9 +516,6 @@

   // Disable automatic keyframe placement.

   cfg.kf_min_dist = cfg.kf_max_dist = 3000;

-  // Default setting for bitrate: used in special case of 1 layer (case 0).

-  cfg.rc_target_bitrate = cfg.ts_target_bitrate[0];

-

   set_temporal_layer_pattern(layering_mode,

                              &cfg,

                              layer_flags,

@@ -525,6 +522,10 @@

                              &flag_periodicity);

   set_rate_control_metrics(&rc, &cfg);

+

+  // Target bandwidth for the whole stream.

+  // Set to ts_target_bitrate for highest layer (total bitrate).

+  cfg.rc_target_bitrate = cfg.ts_target_bitrate[cfg.ts_number_layers - 1];

   // Open input file.

   if (!(infile = fopen(argv[1], "rb"))) {

-- 

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