Add Pascal API for reading wave files (#1243)

pascal-api-examples/read-wav/.gitignore

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+main

pascal-api-examples/read-wav/main.pas

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+{ Copyright (c)  2024  Xiaomi Corporation }
+program main;
+
+{$mode objfpc}
+
+uses
+  sherpa_onnx;
+
+var
+  Wave: TSherpaOnnxWave;
+  S: Single;
+  I: Integer;
+begin
+  Wave := SherpaOnnxReadWave('./lei-jun-test.wav');
+  WriteLn('info ', Wave.SampleRate, ' ', Length(Wave.Samples));
+  S := 0;
+  for i := Low(Wave.Samples) to High(Wave.Samples) do
+    S += Wave.Samples[i];
+
+  WriteLn('sum is ', S);
+end.

pascal-api-examples/read-wav/run.sh

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+#!/usr/bin/env bash
+
+set -ex
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+SHERPA_ONNX_DIR=$(cd $SCRIPT_DIR/../.. && pwd)
+
+echo "SHERPA_ONNX_DIR: $SHERPA_ONNX_DIR"
+
+if [[ ! -f ../../build/lib/libsherpa-onnx-c-api.dylib  && ! -f ../../build/lib/libsherpa-onnx-c-api.so ]]; then
+  mkdir -p ../../build
+  pushd ../../build
+  cmake \
+    -DSHERPA_ONNX_ENABLE_PYTHON=OFF \
+    -DSHERPA_ONNX_ENABLE_TESTS=OFF \
+    -DSHERPA_ONNX_ENABLE_CHECK=OFF \
+    -DBUILD_SHARED_LIBS=ON \
+    -DSHERPA_ONNX_ENABLE_PORTAUDIO=OFF \
+    ..
+
+  make -j4 sherpa-onnx-c-api
+  ls -lh lib
+  popd
+fi
+
+if [ ! -f ./lei-jun-test.wav ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/lei-jun-test.wav
+fi
+
+fpc \
+  -Fu$SHERPA_ONNX_DIR/sherpa-onnx/pascal-api \
+  -Fl$SHERPA_ONNX_DIR/build/lib \
+  ./main.pas
+
+export LD_LIBRARY_PATH=$SHERPA_ONNX_DIR/build/lib:$LD_LIBRARY_PATH
+export DYLD_LIBRARY_PATH=$SHERPA_ONNX_DIR/build/lib:$DYLD_LIBRARY_PATH
+
+./main