shithub: libvpx

Download patch

ref: c79bd22a5f83ce2a2a2a9d9fe37d409c098c41d7
parent: 0eca2cd3c86801490557f1598d2616a8d977323d
author: Minghai Shang <[email protected]>
date: Tue Feb 25 10:32:20 EST 2014 

Change for adding QP settings for key frames

Change-Id: I4dcabb60cb1185eb9a2efa18b50f17af272d2cd6


--- a/examples/vp9_spatial_scalable_encoder.c
+++ b/examples/vp9_spatial_scalable_encoder.c
@@ -54,12 +54,18 @@
 static const arg_def_t scale_factors_arg =
     ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
 static const arg_def_t quantizers_arg =
-    ARG_DEF("q", "quantizers", 1, "quantizers (lowest to highest layer)");
+    ARG_DEF("q", "quantizers", 1, "quantizers for non key frames, also will "
+            "be applied to key frames if -qn is not specified (lowest to "
+            "highest layer)");
+static const arg_def_t quantizers_keyframe_arg =
+    ARG_DEF("qn", "quantizers-keyframe", 1, "quantizers for key frames (lowest "
+        "to highest layer)");
 
 static const arg_def_t *svc_args[] = {
   &encoding_mode_arg, &frames_arg,        &width_arg,       &height_arg,
   &timebase_arg,      &bitrate_arg,       &skip_frames_arg, &layers_arg,
-  &kf_dist_arg,       &scale_factors_arg, &quantizers_arg,  NULL
+  &kf_dist_arg,       &scale_factors_arg, &quantizers_arg,
+  &quantizers_keyframe_arg, NULL
 };
 
 static const SVC_ENCODING_MODE default_encoding_mode =
@@ -150,7 +156,9 @@
     } else if (arg_match(&arg, &scale_factors_arg, argi)) {
       vpx_svc_set_scale_factors(svc_ctx, arg.val);
     } else if (arg_match(&arg, &quantizers_arg, argi)) {
-      vpx_svc_set_quantizers(svc_ctx, arg.val);
+      vpx_svc_set_quantizers(svc_ctx, arg.val, 0);
+    } else if (arg_match(&arg, &quantizers_keyframe_arg, argi)) {
+      vpx_svc_set_quantizers(svc_ctx, arg.val, 1);
     } else {
       ++argj;
     }
--- a/test/svc_test.cc
+++ b/test/svc_test.cc
@@ -177,20 +177,34 @@
   codec_initialized_ = true;
 }
 
+TEST_F(SvcTest, SetKeyFrameQuantizersOption) {
+  svc_.spatial_layers = 2;
+  vpx_codec_err_t res = vpx_svc_set_options(&svc_,
+                                       "quantizers-keyframe=not-quantizers");
+  EXPECT_EQ(VPX_CODEC_OK, res);
+  res = vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
+  EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
+
+  vpx_svc_set_options(&svc_, "quantizers-keyframe=40,45");
+  res = vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
+  EXPECT_EQ(VPX_CODEC_OK, res);
+  codec_initialized_ = true;
+}
+
 TEST_F(SvcTest, SetQuantizers) {
-  vpx_codec_err_t res = vpx_svc_set_quantizers(NULL, "40,30");
+  vpx_codec_err_t res = vpx_svc_set_quantizers(NULL, "40,30", 0);
   EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
 
-  res = vpx_svc_set_quantizers(&svc_, NULL);
+  res = vpx_svc_set_quantizers(&svc_, NULL, 0);
   EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
 
   svc_.spatial_layers = 2;
-  res = vpx_svc_set_quantizers(&svc_, "40");
+  res = vpx_svc_set_quantizers(&svc_, "40", 0);
   EXPECT_EQ(VPX_CODEC_OK, res);
   res = vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
   EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
 
-  res = vpx_svc_set_quantizers(&svc_, "40,30");
+  res = vpx_svc_set_quantizers(&svc_, "40,30", 0);
   EXPECT_EQ(VPX_CODEC_OK, res);
   res = vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
   EXPECT_EQ(VPX_CODEC_OK, res);
@@ -197,6 +211,20 @@
   codec_initialized_ = true;
 }
 
+TEST_F(SvcTest, SetKeyFrameQuantizers) {
+  vpx_codec_err_t res = vpx_svc_set_quantizers(NULL, "40,31", 1);
+  EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
+
+  res = vpx_svc_set_quantizers(&svc_, NULL, 1);
+  EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
+
+  res = vpx_svc_set_quantizers(&svc_, "40,30", 1);
+  EXPECT_EQ(VPX_CODEC_OK, res);
+  res = vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
+  EXPECT_EQ(VPX_CODEC_OK, res);
+  codec_initialized_ = true;
+}
+
 TEST_F(SvcTest, SetScaleFactors) {
   vpx_codec_err_t res = vpx_svc_set_scale_factors(NULL, "4/16,16/16");
   EXPECT_EQ(VPX_CODEC_INVALID_PARAM, res);
@@ -221,7 +249,7 @@
 TEST_F(SvcTest, FirstFrameHasLayers) {
   svc_.spatial_layers = 2;
   vpx_svc_set_scale_factors(&svc_, "4/16,16/16");
-  vpx_svc_set_quantizers(&svc_, "40,30");
+  vpx_svc_set_quantizers(&svc_, "40,30", 0);
 
   vpx_codec_err_t res =
       vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
@@ -248,7 +276,7 @@
 TEST_F(SvcTest, EncodeThreeFrames) {
   svc_.spatial_layers = 2;
   vpx_svc_set_scale_factors(&svc_, "4/16,16/16");
-  vpx_svc_set_quantizers(&svc_, "40,30");
+  vpx_svc_set_quantizers(&svc_, "40,30", 0);
 
   vpx_codec_err_t res =
       vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
@@ -301,7 +329,7 @@
 TEST_F(SvcTest, GetLayerResolution) {
   svc_.spatial_layers = 2;
   vpx_svc_set_scale_factors(&svc_, "4/16,8/16");
-  vpx_svc_set_quantizers(&svc_, "40,30");
+  vpx_svc_set_quantizers(&svc_, "40,30", 0);
 
   vpx_codec_err_t res =
       vpx_svc_init(&svc_, &codec_, vpx_codec_vp9_cx(), &codec_enc_);
--- a/vpx/src/svc_encodeframe.c
+++ b/vpx/src/svc_encodeframe.c
@@ -47,11 +47,14 @@
 typedef struct SvcInternal {
   char options[OPTION_BUFFER_SIZE];        // set by vpx_svc_set_options
   char quantizers[OPTION_BUFFER_SIZE];     // set by vpx_svc_set_quantizers
+  char quantizers_keyframe[OPTION_BUFFER_SIZE];  // set by
+                                                 // vpx_svc_set_quantizers
   char scale_factors[OPTION_BUFFER_SIZE];  // set by vpx_svc_set_scale_factors
 
   // values extracted from option, quantizers
   int scaling_factor_num[VPX_SS_MAX_LAYERS];
   int scaling_factor_den[VPX_SS_MAX_LAYERS];
+  int quantizer_keyframe[VPX_SS_MAX_LAYERS];
   int quantizer[VPX_SS_MAX_LAYERS];
 
   // accumulated statistics
@@ -268,7 +271,8 @@
 }
 
 static vpx_codec_err_t parse_quantizer_values(SvcContext *svc_ctx,
-                                              const char *quantizer_values) {
+                                              const char *quantizer_values,
+                                              const int is_keyframe) {
   char *input_string;
   char *token;
   const char *delim = ",";
@@ -279,6 +283,11 @@
   SvcInternal *const si = get_svc_internal(svc_ctx);
 
   if (quantizer_values == NULL || strlen(quantizer_values) == 0) {
+    if (is_keyframe) {
+      // If there non settings for key frame, we will apply settings from
+      // non key frame. So just simply return here.
+      return VPX_CODEC_INVALID_PARAM;
+    }
     input_string = strdup(DEFAULT_QUANTIZER_VALUES);
   } else {
     input_string = strdup(quantizer_values);
@@ -299,7 +308,12 @@
     } else {
       q = 0;
     }
-    si->quantizer[i + VPX_SS_MAX_LAYERS - svc_ctx->spatial_layers] = q;
+    if (is_keyframe) {
+      si->quantizer_keyframe[i + VPX_SS_MAX_LAYERS - svc_ctx->spatial_layers]
+      = q;
+    } else {
+      si->quantizer[i + VPX_SS_MAX_LAYERS - svc_ctx->spatial_layers] = q;
+    }
   }
   if (res == VPX_CODEC_OK && found != svc_ctx->spatial_layers) {
     svc_log(svc_ctx, SVC_LOG_ERROR,
@@ -384,6 +398,7 @@
   char *option_name;
   char *option_value;
   char *input_ptr;
+  int is_keyframe_qaunt_set = 0;
   vpx_codec_err_t res = VPX_CODEC_OK;
 
   if (options == NULL) return VPX_CODEC_OK;
@@ -409,8 +424,17 @@
       res = parse_scale_factors(svc_ctx, option_value);
       if (res != VPX_CODEC_OK) break;
     } else if (strcmp("quantizers", option_name) == 0) {
-      res = parse_quantizer_values(svc_ctx, option_value);
+      res = parse_quantizer_values(svc_ctx, option_value, 0);
       if (res != VPX_CODEC_OK) break;
+      if (!is_keyframe_qaunt_set) {
+        SvcInternal *const si = get_svc_internal(svc_ctx);
+        memcpy(get_svc_internal(svc_ctx)->quantizer_keyframe, si->quantizer,
+               sizeof(si->quantizer));
+      }
+    } else if (strcmp("quantizers-keyframe", option_name) == 0) {
+      res = parse_quantizer_values(svc_ctx, option_value, 1);
+      if (res != VPX_CODEC_OK) break;
+      is_keyframe_qaunt_set = 1;
     } else {
       svc_log(svc_ctx, SVC_LOG_ERROR, "invalid option: %s\n", option_name);
       res = VPX_CODEC_INVALID_PARAM;
@@ -433,13 +457,19 @@
 }
 
 vpx_codec_err_t vpx_svc_set_quantizers(SvcContext *svc_ctx,
-                                       const char *quantizers) {
+                                       const char *quantizers,
+                                       const int is_for_keyframe) {
   SvcInternal *const si = get_svc_internal(svc_ctx);
   if (svc_ctx == NULL || quantizers == NULL || si == NULL) {
     return VPX_CODEC_INVALID_PARAM;
   }
-  strncpy(si->quantizers, quantizers, sizeof(si->quantizers));
-  si->quantizers[sizeof(si->quantizers) - 1] = '\0';
+  if (is_for_keyframe) {
+    strncpy(si->quantizers_keyframe, quantizers, sizeof(si->quantizers));
+    si->quantizers_keyframe[sizeof(si->quantizers_keyframe) - 1] = '\0';
+  } else {
+    strncpy(si->quantizers, quantizers, sizeof(si->quantizers));
+    si->quantizers[sizeof(si->quantizers) - 1] = '\0';
+  }
   return VPX_CODEC_OK;
 }
 
@@ -490,9 +520,13 @@
   // for first frame
   si->layers = svc_ctx->spatial_layers;
 
-  res = parse_quantizer_values(svc_ctx, si->quantizers);
+  res = parse_quantizer_values(svc_ctx, si->quantizers, 0);
   if (res != VPX_CODEC_OK) return res;
 
+  res = parse_quantizer_values(svc_ctx, si->quantizers_keyframe, 1);
+  if (res != VPX_CODEC_OK)
+    memcpy(si->quantizer_keyframe, si->quantizer, sizeof(si->quantizer));
+
   res = parse_scale_factors(svc_ctx, si->scale_factors);
   if (res != VPX_CODEC_OK) return res;
 
@@ -713,8 +747,15 @@
     svc_log(svc_ctx, SVC_LOG_ERROR, "vpx_svc_get_layer_resolution failed\n");
   }
   layer_index = layer + VPX_SS_MAX_LAYERS - si->layers;
-  svc_params.min_quantizer = si->quantizer[layer_index];
-  svc_params.max_quantizer = si->quantizer[layer_index];
+
+  if (vpx_svc_is_keyframe(svc_ctx)) {
+    svc_params.min_quantizer = si->quantizer_keyframe[layer_index];
+    svc_params.max_quantizer = si->quantizer_keyframe[layer_index];
+  } else {
+    svc_params.min_quantizer = si->quantizer[layer_index];
+    svc_params.max_quantizer = si->quantizer[layer_index];
+  }
+
   svc_params.distance_from_i_frame = si->frame_within_gop;
 
   // Use buffer i for layer i LST
--- a/vpx/svc_context.h
+++ b/vpx/svc_context.h
@@ -64,7 +64,8 @@
  * e.g., "60,53,39,33,27"
  */
 vpx_codec_err_t vpx_svc_set_quantizers(SvcContext *svc_ctx,
-                                       const char *quantizer_values);
+                                       const char *quantizer_values,
+                                       const int is_for_keyframe);
 
 /**
  * Set SVC scale factors