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copy fft result directly

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dev
xufulong 3 years ago
parent 2ea1a4994a
commit 658be6c733
1 changed files with 1 additions and 3 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 4
      app/src/main/cpp/visualizer/execute_fft.c

4
app/src/main/cpp/visualizer/execute_fft.c
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@ -190,7 +190,6 @@ void fft_once(void *p_data, block_t *block, int16_t *output)
float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */ float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */
int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform
the FFT (first channel) */ the FFT (first channel) */
int16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */
float *p_buffl = (float*)block->p_buffer; /* Original buffer */ float *p_buffl = (float*)block->p_buffer; /* Original buffer */
int16_t *p_buffs; /* int16_t converted buffer */ int16_t *p_buffs; /* int16_t converted buffer */
@ -254,10 +253,9 @@ void fft_once(void *p_data, block_t *block, int16_t *output)
fft_perform (p_buffer1, p_output, p_state); fft_perform (p_buffer1, p_output, p_state);
for (i = 0; i< FFT_BUFFER_SIZE; ++i) for (i = 0; i< FFT_BUFFER_SIZE; ++i)
p_dest[i] = p_output[i] * (2 ^ 16) output[i] = p_output[i] * (2 ^ 16)
/ ((FFT_BUFFER_SIZE / 2 * 32768) ^ 2); / ((FFT_BUFFER_SIZE / 2 * 32768) ^ 2);
memcpy(output, p_dest, FFT_BUFFER_SIZE);
LOGE("out[100]=%d,out[101]=%d,out[102]=%d", output[100], output[101], output[102]); LOGE("out[100]=%d,out[101]=%d,out[102]=%d", output[100], output[101], output[102]);
release: release:

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