Converting MODE to be just BEST, GOOD, and REALTIME.

After that change oxcf->pass and oxcf->mode become two orthogonal variables.

Change-Id: I1501f83cd2805480e8118135e6d4045fb41e26d5

vp9/encoder/vp9_encoder.h

@@ -82,36 +82,19 @@ typedef enum {
 } VPX_SCALING;
 
 typedef enum {
-  // Good Quality Fast Encoding. The encoder balances quality with the
-  // amount of time it takes to encode the output. (speed setting
-  // controls how fast)
-  ONE_PASS_GOOD = 1,
+  // Good Quality Fast Encoding. The encoder balances quality with the amount of
+  // time it takes to encode the output. Speed setting controls how fast.
+  GOOD,
 
-  // One Pass - Best Quality. The encoder places priority on the
-  // quality of the output over encoding speed. The output is compressed
-  // at the highest possible quality. This option takes the longest
-  // amount of time to encode. (speed setting ignored)
-  ONE_PASS_BEST = 2,
+  // The encoder places priority on the quality of the output over encoding
+  // speed. The output is compressed at the highest possible quality. This
+  // option takes the longest amount of time to encode. Speed setting ignored.
+  BEST,
 
-  // Two Pass - First Pass. The encoder generates a file of statistics
-  // for use in the second encoding pass. (speed setting controls how fast)
-  TWO_PASS_FIRST = 3,
-
-  // Two Pass - Second Pass. The encoder uses the statistics that were
-  // generated in the first encoding pass to create the compressed
-  // output. (speed setting controls how fast)
-  TWO_PASS_SECOND_GOOD = 4,
-
-  // Two Pass - Second Pass Best.  The encoder uses the statistics that
-  // were generated in the first encoding pass to create the compressed
-  // output using the highest possible quality, and taking a
-  // longer amount of time to encode. (speed setting ignored)
-  TWO_PASS_SECOND_BEST = 5,
-
-  // Realtime/Live Encoding. This mode is optimized for realtime
-  // encoding (for example, capturing a television signal or feed from
-  // a live camera). (speed setting controls how fast)
-  REALTIME = 6,
+  // Realtime/Live Encoding. This mode is optimized for realtime encoding (for
+  // example, capturing a television signal or feed from a live camera). Speed
+  // setting controls how fast.
+  REALTIME
 } MODE;
 
 typedef enum {
@@ -241,7 +224,7 @@ static INLINE int is_lossless_requested(const VP9EncoderConfig *cfg) {
 }
 
 static INLINE int is_best_mode(MODE mode) {
-  return mode == ONE_PASS_BEST || mode == TWO_PASS_SECOND_BEST;
+  return mode == BEST;
 }
 
 typedef struct VP9_COMP {

vp9/vp9_cx_iface.c

@@ -334,17 +334,16 @@ static vpx_codec_err_t set_encoder_config(
   if (oxcf->init_framerate > 180)
     oxcf->init_framerate = 30;
 
+  oxcf->mode = BEST;
+
   switch (cfg->g_pass) {
     case VPX_RC_ONE_PASS:
-      oxcf->mode = ONE_PASS_GOOD;
       oxcf->pass = 0;
       break;
     case VPX_RC_FIRST_PASS:
-      oxcf->mode = TWO_PASS_FIRST;
       oxcf->pass = 1;
       break;
     case VPX_RC_LAST_PASS:
-      oxcf->mode = TWO_PASS_SECOND_BEST;
       oxcf->pass = 2;
       break;
   }
@@ -718,31 +717,36 @@ static vpx_codec_err_t encoder_destroy(vpx_codec_alg_priv_t *ctx) {
   return VPX_CODEC_OK;
 }
 
-static void pick_quickcompress_mode(vpx_codec_alg_priv_t  *ctx,
+static void pick_quickcompress_mode(vpx_codec_alg_priv_t *ctx,
                                     unsigned long duration,
                                     unsigned long deadline) {
-  // Use best quality mode if no deadline is given.
-  MODE new_qc = ONE_PASS_BEST;
+  MODE new_mode = BEST;
 
-  if (deadline) {
-    // Convert duration parameter from stream timebase to microseconds
-    const uint64_t duration_us = (uint64_t)duration * 1000000 *
-                               (uint64_t)ctx->cfg.g_timebase.num /
-                               (uint64_t)ctx->cfg.g_timebase.den;
+  switch (ctx->cfg.g_pass) {
+    case VPX_RC_ONE_PASS:
+      if (deadline > 0) {
+        const vpx_codec_enc_cfg_t *const cfg = &ctx->cfg;
 
-    // If the deadline is more that the duration this frame is to be shown,
-    // use good quality mode. Otherwise use realtime mode.
-    new_qc = (deadline > duration_us) ? ONE_PASS_GOOD : REALTIME;
+        // Convert duration parameter from stream timebase to microseconds.
+        const uint64_t duration_us = (uint64_t)duration * 1000000 *
+           (uint64_t)cfg->g_timebase.num /(uint64_t)cfg->g_timebase.den;
+
+        // If the deadline is more that the duration this frame is to be shown,
+        // use good quality mode. Otherwise use realtime mode.
+        new_mode = (deadline > duration_us) ? GOOD : REALTIME;
+      } else {
+        new_mode = BEST;
+      }
+      break;
+    case VPX_RC_FIRST_PASS:
+      break;
+    case VPX_RC_LAST_PASS:
+      new_mode = deadline > 0 ? GOOD : BEST;
+      break;
   }
 
-  if (ctx->cfg.g_pass == VPX_RC_FIRST_PASS)
-    new_qc = TWO_PASS_FIRST;
-  else if (ctx->cfg.g_pass == VPX_RC_LAST_PASS)
-    new_qc = (new_qc == ONE_PASS_BEST) ? TWO_PASS_SECOND_BEST
-                                          : TWO_PASS_SECOND_GOOD;
-
-  if (ctx->oxcf.mode != new_qc) {
-    ctx->oxcf.mode = new_qc;
+  if (ctx->oxcf.mode != new_mode) {
+    ctx->oxcf.mode = new_mode;
     vp9_change_config(ctx->cpi, &ctx->oxcf);
   }
 }