qiaohaijiao commented on code in PR #7717:
URL: https://github.com/apache/nuttx/pull/7717#discussion_r1037818394
##########
arch/sim/src/sim/sim_alsa.c:
##########
@@ -702,6 +855,147 @@ static int sim_mixer_open(struct sim_audio_s *priv)
return 0;
}
+static int sim_audio_mp3_scale(mad_fixed_t sample)
+{
+ sample += 1L << (MAD_F_FRACBITS - 16);
+
+ if (sample >= MAD_F_ONE)
+ {
+ sample = MAD_F_ONE - 1;
+ }
+ else if (sample < -MAD_F_ONE)
+ {
+ sample = -MAD_F_ONE;
+ }
+
+ return sample >> (MAD_F_FRACBITS + 1 - 16);
+}
+
+static void *sim_audio_mp3_init()
+{
+ struct sim_decoder_mp3_s *codec;
+
+ codec = malloc(sizeof(struct sim_decoder_mp3_s));
Review Comment:
done
##########
arch/sim/src/sim/sim_alsa.c:
##########
@@ -702,6 +855,147 @@ static int sim_mixer_open(struct sim_audio_s *priv)
return 0;
}
+static int sim_audio_mp3_scale(mad_fixed_t sample)
+{
+ sample += 1L << (MAD_F_FRACBITS - 16);
+
+ if (sample >= MAD_F_ONE)
+ {
+ sample = MAD_F_ONE - 1;
+ }
+ else if (sample < -MAD_F_ONE)
+ {
+ sample = -MAD_F_ONE;
+ }
+
+ return sample >> (MAD_F_FRACBITS + 1 - 16);
+}
+
+static void *sim_audio_mp3_init()
+{
+ struct sim_decoder_mp3_s *codec;
+
+ codec = malloc(sizeof(struct sim_decoder_mp3_s));
+ if (codec == NULL)
+ {
+ return NULL;
+ }
+
+ mad_stream_init(&codec->stream);
+ mad_frame_init(&codec->frame);
+ mad_synth_init(&codec->synth);
+
+ codec->out = malloc(sizeof(codec->synth.pcm.samples));
Review Comment:
done
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