Fix web pixel buffer access

1 files changed, 11 insertions, 8 deletions

diff --git a/index.htm b/index.htm
index f94bdca..ce6a2a9 100644
--- a/index.htm
+++ b/index.htm
@@ -34,6 +34,12 @@
                       fd_seek        : () => { throw new Error("Unexpected fd_seek call"); },
                     },
                     env : {
+                      log_error_impl : (file_len, file, line, func_len, func, text_len, text) => {
+                        let s_file = String.fromCharCode.apply(null, new Uint8Array(this.memory_buffer, file, file_len));
+                        let s_func = String.fromCharCode.apply(null, new Uint8Array(this.memory_buffer, func, func_len));
+                        let s_text = String.fromCharCode.apply(null, new Uint8Array(this.memory_buffer, text, text_len));
+                        console.error(`${s_file}:${line}, ${s_func}: ${s_text}`);
+                      },
                       write_clipboard_text_impl : (size, text) => {
                         let text_buffer = new ArrayBuffer(size);
                         new Uint8Array(text_buffer).set(new Uint8Array(this.memory_buffer, text, size));
@@ -75,7 +81,6 @@
                   program.exports.js_main();
 
                   this.sound_buffer_address = program.exports.js_sound_buffer();
-                  this.pixels_address       = program.exports.js_pixels();
 
                   this.frames = new Float32Array(
                     this.memory_buffer,
@@ -187,10 +192,8 @@
                 for (let f of ev.files) {
                   let ok = this.program.exports.js_drop(f.name.byteLength + 1, f.data.byteLength);
 
-                  if (ok == 0) {
-                    console.error("File too big");
+                  if (ok == 0)
                     break;
-                  }
 
                   let name_address = this.program.exports.js_drop_name();
                   let data_address = this.program.exports.js_drop_data();
@@ -228,10 +231,9 @@
             let num_samples  = output[0][0].length;
             let num_frames   = num_samples * num_channels;
 
-            this.program.exports.js_frame(this.frame_width, this.frame_height, num_samples);
-
-            let pixels_buffer = new ArrayBuffer(this.pixels_size);
-            new Uint8Array(pixels_buffer).set(new Uint8Array(this.memory_buffer, this.pixels_address, this.pixels_size));
+             let pixels_address = this.program.exports.js_frame(this.frame_width, this.frame_height, num_samples);
+            let pixels_buffer  = new ArrayBuffer(this.pixels_size);
+            new Uint8Array(pixels_buffer).set(new Uint8Array(this.memory_buffer, pixels_address, this.pixels_size));
 
             this.port.postMessage({
               id            : "frame",
@@ -276,6 +278,7 @@
           wasm,
           {
             env : {
+              log_error_impl                   : () => {},
               write_clipboard_impl             : () => {},
               current_utc_time_in_milliseconds : () => {},