Bind to WP2::EncoderConfig directly

codecs/wp2/enc/wp2_enc.cpp

@@ -5,168 +5,8 @@
 #include "src/wp2/encode.h"
 using namespace emscripten;
 
-// enum PartitionMethod {
-//   // For each block size starting from biggest, take all blocks matching
-//   some: THRESH_VARIANCE_PARTITIONING,  // uniform variance score
-//   // For each block size starting from biggest, find the best pos depending
-//   on: BIG_BLOCK_VARIANCE_RNG_PARTITIONING,  // uniform variance score
-//   BIG_BLOCK_VARIANCE_MAX_PARTITIONING,  // low variance score
-//   BIG_BLOCK_TRANS_AMPL_PARTITIONING,    // DCT coeffs amplitude
-//   BIG_BLOCK_TRANS_ZEROS_PARTITIONING,   // number of near zeros in DCT coeffs
-//   BIG_BLOCK_LUMA_RNG_PARTITIONING,      // luma range score
-//   BIG_BLOCK_RECONS_PARTITIONING,        // reconstruction score
-//   BIG_BLOCK_PRED_PARTITIONING,          // prediction score
-//   BIG_BLOCK_QUANT_PARTITIONING,         // pred+recons+quant score
-//   // For each pos starting from top left, take the best block size depending
-//   on: TOP_LEFT_RECONS_PARTITIONING,              // reconstruction score
-//   TOP_LEFT_PRED_PARTITIONING,                // prediction score
-//   TOP_LEFT_BLOCK_ENCODE_PARTITIONING,        // block encoding score
-//   TOP_LEFT_TILE_ENCODE_PARTITIONING,         // tile encoding score (slow)
-//   TOP_LEFT_TILE_ENCODE_DECODE_PARTITIONING,  // tile enc+dec score (slow)
-//   // Combine several metrics in successive block size passes:
-//   MULTIPASS_PARTITIONING,
-//   // For each possible block layout, take the best one (extremely slow):
-//   EXHAUSTIVE_PARTITIONING,  // based on tile enc+dec score
-//   // Split variants of methods above:
-//   SPLIT_BIG_BLOCK_VARIANCE_MAX_PARTITIONING,
-//   SPLIT_BIG_BLOCK_PRED_PARTITIONING,
-//   SPLIT_BIG_BLOCK_QUANT_PARTITIONING,
-//   SPLIT_TOP_LEFT_BLOCK_ENCODE_PARTITIONING,
-//   // Fixed block size (except on edges). Also depends on the partition set.
-//   ALL_4X4_PARTITIONING,
-//   ALL_8X8_PARTITIONING,
-//   ALL_16X16_PARTITIONING,
-//   ALL_32X32_PARTITIONING,
-//   NUM_PARTITION_METHODS
-// };
-
-// enum PartitionSet {  // The smallest block size is 4x4.
-//   SMALL_SQUARES,     // Up to 8x8
-//   SMALL_RECTS,       // Up to 16x16
-//   ALL_RECTS,         // Up to 32x32, ratio at most 4:1
-//   THICK_RECTS,       // Up to 32x32, ratio at most 2:1
-//   MEDIUM_SQUARES,    // Up to 16x16
-//   ALL_SQUARES,       // Up to 32x32
-//   SOME_RECTS,        // Up to 32x32, subset of frequently used rects
-//   NUM_PARTITION_SETS
-// };
-
-// enum class PredictorSet {
-//   CUSTOM_PREDICTORS = 0,  // this predictor should stay first
-//   DC_PREDICTORS,
-//   ANGLE_PREDICTORS,
-//   VP8_PREDICTORS,
-//   SMOOTH_PREDICTORS,
-//   PAETH_PREDICTOR,
-//   AV1_FILTER,
-//   FUSE_PREDICTORS,
-//   ALL,               // includes all of the above starting at 1
-//   LARGE_PREDICTORS,  // fixed set for some Y blocks
-//   UV_PREDICTORS,     // fixed set for U/V
-//   ALPHA_PREDICTORS,  // fixed set for alpha
-//   LAST_PREDICTORS,   // end-of-list marker
-// };
-
-// enum class Csp { kYCoCg, kYCbCr, kCustom, kYIQ };
-
-// typedef enum {
-//   UVModeAdapt = 0,
-//   UVMode420,
-//   UVModeSharp,
-//   UVMode444,
-//   NumUVMode  // End-of-list marker
-// } UVMode;
-
-struct WP2Options {
-  float quality = 75.0f; // Range: [0 = smallest file .. 100 = lossless]
-                         // Quality in [95-100) range will use near-lossless.
-                         // Quality 100 is strictly lossless.
-  // int target_size = 0;   // If non-zero, set the desired target size in
-  // bytes. Takes precedence over the 'quality' parameter.
-  // float target_psnr = 0.f;  // If non-zero, specifies the minimal distortion
-  // to try to achieve. Precedence over 'target_size'.
-
-  float alpha_quality = 100.f; // Range: [0 = smallest size .. 100 = lossless]
-  int speed = 5; // Quality/speed trade-off. Range: [0=fast .. 9=slower-better]
-
-  // Side parameters:
-  // Set whether the image will be rotated during decoding.
-  // Orientation decoding_orientation = Orientation::kOriginal;
-  // Add a heavily compressed preview to be decoded and displayed before final
-  // pixels (small size overhead up to kMaxPreviewSize).
-  // bool create_preview = false;
-
-  // TransferFunction transfer_function = WP2_TF_ITU_R_BT2020_10BIT;
-
-  // Parameters related to lossy compression only:
-  int pass = 1; // Number of entropy-analysis passes. Range: [1..10]
-
-  // Spatial noise shaping strength in [0(=off), 100]
-  // Affects how we spread noise between 'risky' areas (where noise is easily
-  // visible) and easier areas (where it's less visible). A high SNS
-  // value leads to skewing noise more towards areas where it should be less
-  // visible. In general this improves SSIM but worsens PSNR.
-  float sns = 50.f;
-  int error_diffusion = 0; // error diffusion strength [0=off, 100=max]
-
-  int segments = 4; // Max number of segments. Range: [1..kMaxNumSegments]
-  int segment_threshold = 0; // Segmentation threshold. Range: [0..100]
-  // selector for explicit or implicit segment-id
-  // typedef enum {
-  //   SEGMENT_ID_AUTO,     // use ID_EXPLICIT above a quality threshold
-  //   SEGMENT_ID_EXPLICIT,
-  //   SEGMENT_ID_IMPLICIT
-  // } SegmentIdMode;
-  // SegmentIdMode segment_id_mode = SEGMENT_ID_AUTO;
-
-  // Size of tiles (width/height) in pixels. Tiles are always square. Each
-  // tile is compressed independently, possibly in parallel.
-  // Valid values: 64, 128, 256, 512 (see format_constants.h)
-  // 0 means size is chosen automatically.
-  int tile_size = 0;
-
-  // Algorithm for dividing the image into blocks.
-  // PartitionMethod partition_method = MULTIPASS_PARTITIONING;
-  // The set of allowed block sizes for image partitioning.
-  // PartitionSet partition_set = SOME_RECTS;
-  // If true, use binary space partitioning instead of floating partition.
-  bool partition_snapping = true;
-
-  // The set of predictors that can be used for reconstruction.
-  // PredictorSet predictor_set = PredictorSet::VP8_PREDICTORS;
-
-  WP2::Csp csp_type = WP2::Csp::kYCoCg; // Colorspace.
-
-  WP2::EncoderConfig::UVMode uv_mode =
-      WP2::EncoderConfig::UVMode::UVMode420; // Default sub-sampling mode for
-                                             // U/V planes.
-
-  // int preprocessing = 0;           // Preprocessing filter.
-  // int preprocessing_strength = 0;  // Range: [0 .. 100]
-
-  // bool use_random_matrix = false;  // Experimental.
-  // bool store_grain = false;        // Experimental: store grain info
-
-  // // Parameters related to lossless compression only:
-  // bool use_delta_palette = false;  // Reserved for future lossless feature.
-
-  // // Performance parameters (no impact on encoded bytes):
-  // int thread_level = 0;     // If non-zero, try and use multi-threaded
-  // encoding. bool low_memory = false;  // Memory usage reduction (but CPU use
-  // increase).
-
-  // // Neural compression:
-  // int use_neural_compression = 0;       // Neural network compression.
-  // const char* graphdef_path = nullptr;  // Directory holding encoder /
-  // decoder
-  //                                       // graphdefs structure:
-  //                                       // base/qq/[en|de]coder.pbbin
-
-  // EncoderInfo* info = nullptr;   // If not
-};
-
 val encode(std::string image_in, int image_width, int image_height,
-           WP2Options options) {
+           WP2::EncoderConfig config) {
   WP2Status status;
   uint8_t *image_buffer = (uint8_t *)image_in.c_str();
   WP2::ArgbBuffer src = WP2::ArgbBuffer();
@@ -174,19 +14,13 @@ val encode(std::string image_in, int image_width, int image_height,
                                    // premultiplied alpha
                       image_width, image_height, image_buffer, 4 * image_width);
   if (status != WP2_STATUS_OK) {
-    return val(1);
+    return val::null();
   }
 
   WP2::MemoryWriter memory_writer;
-  WP2::EncoderConfig config;
-  config.quality = options.quality;
-  config.alpha_quality = options.alpha_quality;
-  config.speed = options.speed;
-  config.pass = options.pass;
-  config.sns = options.sns;
   status = WP2::Encode(src, &memory_writer, config);
   if (status != WP2_STATUS_OK) {
-    return val(2);
+    return val::null();
   }
 
   return val(typed_memory_view(memory_writer.size_, memory_writer.mem_));
@@ -194,12 +28,12 @@ val encode(std::string image_in, int image_width, int image_height,
 }
 
 EMSCRIPTEN_BINDINGS(my_module) {
-  value_object<WP2Options>("WP2Options")
+  value_object<WP2::EncoderConfig>("WP2EncoderConfig")
-      .field("quality", &WP2Options::quality)
+      .field("quality", &WP2::EncoderConfig::quality)
-      .field("alpha_quality", &WP2Options::alpha_quality)
+      .field("alpha_quality", &WP2::EncoderConfig::alpha_quality)
-      .field("speed", &WP2Options::speed)
+      .field("speed", &WP2::EncoderConfig::speed)
-      .field("pass", &WP2Options::pass)
+      .field("pass", &WP2::EncoderConfig::pass)
-      .field("sns", &WP2Options::sns);
+      .field("sns", &WP2::EncoderConfig::sns);
 
   function("encode", &encode);
 }

codecs/wp2/enc/wp2_enc.js

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