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audio/mp3: Refactoring: Use uint32 for output data
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parent
51a2507430
commit
541a633361
@ -40,7 +40,7 @@ var (
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)
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)
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func decodeL3() error {
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func decodeL3() error {
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out := make([]int, 576)
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out := make([]uint32, 576)
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// Number of channels(1 for mono and 2 for stereo)
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// Number of channels(1 for mono and 2 for stereo)
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nch := 2
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nch := 2
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if C.g_frame_header.mode == C.mpeg1_mode_single_channel {
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if C.g_frame_header.mode == C.mpeg1_mode_single_channel {
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@ -68,7 +68,7 @@ func decodeL3() error {
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return nil
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return nil
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}
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}
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func audioWriteRaw(samples []int) error {
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func audioWriteRaw(samples []uint32) error {
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nch := 2
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nch := 2
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if C.g_frame_header.mode == C.mpeg1_mode_single_channel {
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if C.g_frame_header.mode == C.mpeg1_mode_single_channel {
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nch = 1
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nch = 1
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@ -558,7 +558,7 @@ var g_synth_dtbl = [512]float32{
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0.000015259, 0.000015259, 0.000015259, 0.000015259,
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0.000015259, 0.000015259, 0.000015259, 0.000015259,
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}
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}
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func l3SubbandSynthesis(gr int, ch int, out []int) {
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func l3SubbandSynthesis(gr int, ch int, out []uint32) {
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u_vec := make([]float32, 512)
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u_vec := make([]float32, 512)
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s_vec := make([]float32, 32)
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s_vec := make([]float32, 32)
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@ -604,15 +604,16 @@ func l3SubbandSynthesis(gr int, ch int, out []int) {
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samp = -32767
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samp = -32767
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}
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}
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samp &= 0xffff
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samp &= 0xffff
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s := uint32(samp)
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if ch == 0 { /* This function must be called for channel 0 first */
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if ch == 0 { /* This function must be called for channel 0 first */
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/* We always run in stereo mode,& duplicate channels here for mono */
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/* We always run in stereo mode,& duplicate channels here for mono */
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if nch == 1 {
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if nch == 1 {
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out[32*ss+i] = (samp << 16) | (samp)
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out[32*ss+i] = (s << 16) | (s)
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} else {
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} else {
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out[32*ss+i] = samp << 16
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out[32*ss+i] = s << 16
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}
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}
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} else {
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} else {
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out[32*ss+i] |= samp
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out[32*ss+i] |= s
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}
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}
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}
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}
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}
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}
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