| // Auto-generated file. Do not edit! |
| // Template: src/qs8-gavgpool/multipass-sse.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2020 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <smmintrin.h> |
| |
| #include <xnnpack/gavgpool.h> |
| #include <xnnpack/math.h> |
| |
| |
| void xnn_qs8_gavgpool_minmax_fp32_ukernel_7p7x__sse41_c16_acc2( |
| size_t rows, |
| size_t channels, |
| const int8_t* input, |
| size_t input_stride, |
| const int8_t* zero, |
| int32_t* buffer, |
| int8_t* output, |
| const union xnn_qs8_avgpool_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(rows > 7); |
| assert(channels != 0); |
| |
| const int8_t* i0 = input; |
| const int8_t* i1 = (const int8_t*) ((uintptr_t) i0 + input_stride); |
| const int8_t* i2 = (const int8_t*) ((uintptr_t) i1 + input_stride); |
| const int8_t* i3 = (const int8_t*) ((uintptr_t) i2 + input_stride); |
| const int8_t* i4 = (const int8_t*) ((uintptr_t) i3 + input_stride); |
| const int8_t* i5 = (const int8_t*) ((uintptr_t) i4 + input_stride); |
| const int8_t* i6 = (const int8_t*) ((uintptr_t) i5 + input_stride); |
| const size_t input_increment = 7 * input_stride - round_up_po2(channels, 16); |
| |
| const __m128i vinit_bias = _mm_load_si128((const __m128i*) params->fp32_sse4.init_bias); |
| int32_t* b = buffer; |
| size_t c = channels; |
| for (; c != 0; c = doz(c, 16)) { |
| const __m128i vxi0x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i0)); |
| const __m128i vxi0x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i0 + 8))); |
| i0 += 16; |
| const __m128i vxi1x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i1)); |
| const __m128i vxi1x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i1 + 8))); |
| i1 += 16; |
| const __m128i vxi2x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i2)); |
| const __m128i vxi2x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i2 + 8))); |
| i2 += 16; |
| const __m128i vxi3x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i3)); |
| const __m128i vxi3x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i3 + 8))); |
| i3 += 16; |
| const __m128i vxi4x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i4)); |
| const __m128i vxi4x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i4 + 8))); |
| i4 += 16; |
| const __m128i vxi5x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i5)); |
| const __m128i vxi5x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i5 + 8))); |
| i5 += 16; |
| const __m128i vxi6x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i6)); |
| const __m128i vxi6x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i6 + 8))); |
| i6 += 16; |
| |
| |
| __m128i vacc0x01234567 = _mm_add_epi16(vxi0x01234567, vxi1x01234567); |
| __m128i vacc0x89ABCDEF = _mm_add_epi16(vxi0x89ABCDEF, vxi1x89ABCDEF); |
| __m128i vacc1x01234567 = _mm_add_epi16(vxi2x01234567, vxi3x01234567); |
| __m128i vacc1x89ABCDEF = _mm_add_epi16(vxi2x89ABCDEF, vxi3x89ABCDEF); |
| |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi4x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi4x89ABCDEF); |
| vacc1x01234567 = _mm_add_epi16(vacc1x01234567, vxi5x01234567); |
| vacc1x89ABCDEF = _mm_add_epi16(vacc1x89ABCDEF, vxi5x89ABCDEF); |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi6x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi6x89ABCDEF); |
| |
| // Add up all accumulators to vacc0x0123456789ABCDEF |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vacc1x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vacc1x89ABCDEF); |
| |
| const __m128i vacc0123 = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x01234567), vinit_bias); |
| const __m128i vacc4567 = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x01234567, vacc0x01234567), 16), vinit_bias); |
| const __m128i vacc89AB = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x89ABCDEF), vinit_bias); |
| const __m128i vaccCDEF = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x89ABCDEF, vacc0x89ABCDEF), 16), vinit_bias); |
| |
| _mm_store_si128((__m128i*) b, vacc0123); |
| _mm_store_si128((__m128i*) (b + 4), vacc4567); |
| _mm_store_si128((__m128i*) (b + 8), vacc89AB); |
| _mm_store_si128((__m128i*) (b + 12), vaccCDEF); |
| b += 16; |
| } |
| |
| for (rows -= 7; rows > 7; rows -= 7) { |
| i0 = (const int8_t*) ((uintptr_t) i0 + input_increment); |
| i1 = (const int8_t*) ((uintptr_t) i1 + input_increment); |
| i2 = (const int8_t*) ((uintptr_t) i2 + input_increment); |
| i3 = (const int8_t*) ((uintptr_t) i3 + input_increment); |
| i4 = (const int8_t*) ((uintptr_t) i4 + input_increment); |
| i5 = (const int8_t*) ((uintptr_t) i5 + input_increment); |
| i6 = (const int8_t*) ((uintptr_t) i6 + input_increment); |
| |
| int32_t* b = buffer; |
| size_t c = channels; |
| for (; c != 0; c = doz(c, 16)) { |
| const __m128i vxi0x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i0)); |
| const __m128i vxi0x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i0 + 8))); |
| i0 += 16; |
| const __m128i vxi1x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i1)); |
| const __m128i vxi1x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i1 + 8))); |
| i1 += 16; |
| const __m128i vxi2x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i2)); |
| const __m128i vxi2x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i2 + 8))); |
| i2 += 16; |
| const __m128i vxi3x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i3)); |
| const __m128i vxi3x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i3 + 8))); |
| i3 += 16; |
| const __m128i vxi4x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i4)); |
| const __m128i vxi4x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i4 + 8))); |
| i4 += 16; |
| const __m128i vxi5x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i5)); |
| const __m128i vxi5x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i5 + 8))); |
| i5 += 16; |
| const __m128i vxi6x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i6)); |
| const __m128i vxi6x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i6 + 8))); |
| i6 += 16; |
| |
| |
| __m128i vacc0x01234567 = _mm_add_epi16(vxi0x01234567, vxi1x01234567); |
| __m128i vacc0x89ABCDEF = _mm_add_epi16(vxi0x89ABCDEF, vxi1x89ABCDEF); |
| __m128i vacc1x01234567 = _mm_add_epi16(vxi2x01234567, vxi3x01234567); |
| __m128i vacc1x89ABCDEF = _mm_add_epi16(vxi2x89ABCDEF, vxi3x89ABCDEF); |
| |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi4x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi4x89ABCDEF); |
| vacc1x01234567 = _mm_add_epi16(vacc1x01234567, vxi5x01234567); |
| vacc1x89ABCDEF = _mm_add_epi16(vacc1x89ABCDEF, vxi5x89ABCDEF); |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi6x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi6x89ABCDEF); |
| |
| // Add up all accumulators to vacc0x0123456789ABCDEF |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vacc1x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vacc1x89ABCDEF); |
| |
| const __m128i vacc0123 = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x01234567), _mm_load_si128((const __m128i*) (b + 0))); |
| const __m128i vacc4567 = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x01234567, vacc0x01234567), 16), _mm_load_si128((const __m128i*) (b + 4))); |
| const __m128i vacc89AB = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x89ABCDEF), _mm_load_si128((const __m128i*) (b + 8))); |
| const __m128i vaccCDEF = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x89ABCDEF, vacc0x89ABCDEF), 16), _mm_load_si128((const __m128i*) (b + 12))); |
| |
| _mm_store_si128((__m128i*) b, vacc0123); |
| _mm_store_si128((__m128i*) (b + 4), vacc4567); |
| _mm_store_si128((__m128i*) (b + 8), vacc89AB); |
| _mm_store_si128((__m128i*) (b + 12), vaccCDEF); |
| b += 16; |
| } |
| } |
| |
| i0 = (const int8_t*) ((uintptr_t) i0 + input_increment); |
| i1 = (const int8_t*) ((uintptr_t) i1 + input_increment); |
| if XNN_UNPREDICTABLE(rows < 2) { |
| i1 = zero; |
| } |
| i2 = (const int8_t*) ((uintptr_t) i2 + input_increment); |
| if XNN_UNPREDICTABLE(rows <= 2) { |
| i2 = zero; |
| } |
| i3 = (const int8_t*) ((uintptr_t) i3 + input_increment); |
| if XNN_UNPREDICTABLE(rows < 4) { |
| i3 = zero; |
| } |
| i4 = (const int8_t*) ((uintptr_t) i4 + input_increment); |
| if XNN_UNPREDICTABLE(rows <= 4) { |
| i4 = zero; |
| } |
| i5 = (const int8_t*) ((uintptr_t) i5 + input_increment); |
| if XNN_UNPREDICTABLE(rows < 6) { |
| i5 = zero; |
| } |
| i6 = (const int8_t*) ((uintptr_t) i6 + input_increment); |
| if XNN_UNPREDICTABLE(rows <= 6) { |
| i6 = zero; |
| } |
| |
| const __m128 vscale = _mm_load_ps(params->fp32_sse4.scale); |
| const __m128 voutput_max_less_zero_point = _mm_load_ps(params->fp32_sse4.output_max_less_zero_point); |
| const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->fp32_sse4.output_zero_point); |
| const __m128i voutput_min = _mm_load_si128((const __m128i*) params->fp32_sse4.output_min); |
| for (; channels >= 16; channels -= 16) { |
| const __m128i vxi0x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i0)); |
| const __m128i vxi0x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i0 + 8))); |
| i0 += 16; |
| const __m128i vxi1x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i1)); |
| const __m128i vxi1x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i1 + 8))); |
| i1 += 16; |
| const __m128i vxi2x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i2)); |
| const __m128i vxi2x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i2 + 8))); |
| i2 += 16; |
| const __m128i vxi3x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i3)); |
| const __m128i vxi3x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i3 + 8))); |
| i3 += 16; |
| const __m128i vxi4x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i4)); |
| const __m128i vxi4x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i4 + 8))); |
| i4 += 16; |
| const __m128i vxi5x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i5)); |
| const __m128i vxi5x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i5 + 8))); |
| i5 += 16; |
| const __m128i vxi6x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i6)); |
| const __m128i vxi6x89ABCDEF = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) (i6 + 8))); |
| i6 += 16; |
| |
| |
| __m128i vacc0x01234567 = _mm_add_epi16(vxi0x01234567, vxi1x01234567); |
| __m128i vacc0x89ABCDEF = _mm_add_epi16(vxi0x89ABCDEF, vxi1x89ABCDEF); |
| __m128i vacc1x01234567 = _mm_add_epi16(vxi2x01234567, vxi3x01234567); |
| __m128i vacc1x89ABCDEF = _mm_add_epi16(vxi2x89ABCDEF, vxi3x89ABCDEF); |
| |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi4x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi4x89ABCDEF); |
| vacc1x01234567 = _mm_add_epi16(vacc1x01234567, vxi5x01234567); |
| vacc1x89ABCDEF = _mm_add_epi16(vacc1x89ABCDEF, vxi5x89ABCDEF); |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi6x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vxi6x89ABCDEF); |
| |
| // Add up all accumulators to vacc0x0123456789ABCDEF |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vacc1x01234567); |
| vacc0x89ABCDEF = _mm_add_epi16(vacc0x89ABCDEF, vacc1x89ABCDEF); |
| |
| __m128i vacc0123 = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x01234567), _mm_load_si128((const __m128i*) (buffer + 0))); |
| __m128i vacc4567 = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x01234567, vacc0x01234567), 16), _mm_load_si128((const __m128i*) (buffer + 4))); |
| __m128i vacc89AB = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x89ABCDEF), _mm_load_si128((const __m128i*) (buffer + 8))); |
| __m128i vaccCDEF = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x89ABCDEF, vacc0x89ABCDEF), 16), _mm_load_si128((const __m128i*) (buffer + 12))); |
| buffer += 16; |
| |
| __m128 vfpacc0123 = _mm_cvtepi32_ps(vacc0123); |
| __m128 vfpacc4567 = _mm_cvtepi32_ps(vacc4567); |
| __m128 vfpacc89AB = _mm_cvtepi32_ps(vacc89AB); |
| __m128 vfpaccCDEF = _mm_cvtepi32_ps(vaccCDEF); |
| |
| vfpacc0123 = _mm_mul_ps(vfpacc0123, vscale); |
| vfpacc4567 = _mm_mul_ps(vfpacc4567, vscale); |
| vfpacc89AB = _mm_mul_ps(vfpacc89AB, vscale); |
| vfpaccCDEF = _mm_mul_ps(vfpaccCDEF, vscale); |
| |
| vfpacc0123 = _mm_min_ps(vfpacc0123, voutput_max_less_zero_point); |
| vfpacc4567 = _mm_min_ps(vfpacc4567, voutput_max_less_zero_point); |
| vfpacc89AB = _mm_min_ps(vfpacc89AB, voutput_max_less_zero_point); |
| vfpaccCDEF = _mm_min_ps(vfpaccCDEF, voutput_max_less_zero_point); |
| |
| vacc0123 = _mm_cvtps_epi32(vfpacc0123); |
| vacc4567 = _mm_cvtps_epi32(vfpacc4567); |
| vacc89AB = _mm_cvtps_epi32(vfpacc89AB); |
| vaccCDEF = _mm_cvtps_epi32(vfpaccCDEF); |
| |
| __m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point); |
| __m128i vout89ABCDEF = _mm_adds_epi16(_mm_packs_epi32(vacc89AB, vaccCDEF), voutput_zero_point); |
| |
| |
| __m128i vout0123456789ABCDEF = _mm_packs_epi16(vout01234567, vout89ABCDEF); |
| |
| vout0123456789ABCDEF = _mm_max_epi8(vout0123456789ABCDEF, voutput_min); |
| |
| _mm_storeu_si128((__m128i*) output, vout0123456789ABCDEF); |
| output += 16; |
| } |
| if XNN_UNLIKELY(channels != 0) { |
| do { |
| const __m128i vxi0x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i0)); |
| i0 += 8; |
| const __m128i vxi1x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i1)); |
| i1 += 8; |
| const __m128i vxi2x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i2)); |
| i2 += 8; |
| const __m128i vxi3x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i3)); |
| i3 += 8; |
| const __m128i vxi4x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i4)); |
| i4 += 8; |
| const __m128i vxi5x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i5)); |
| i5 += 8; |
| const __m128i vxi6x01234567 = _mm_cvtepi8_epi16(_mm_loadl_epi64((const __m128i*) i6)); |
| i6 += 8; |
| |
| |
| __m128i vacc0x01234567 = _mm_add_epi16(vxi0x01234567, vxi1x01234567); |
| __m128i vacc1x01234567 = _mm_add_epi16(vxi2x01234567, vxi3x01234567); |
| |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi4x01234567); |
| vacc1x01234567 = _mm_add_epi16(vacc1x01234567, vxi5x01234567); |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vxi6x01234567); |
| |
| // Add up all accumulators to vacc0x01234567 |
| vacc0x01234567 = _mm_add_epi16(vacc0x01234567, vacc1x01234567); |
| |
| __m128i vacc0123 = _mm_add_epi32(_mm_cvtepi16_epi32(vacc0x01234567), _mm_load_si128((const __m128i*) buffer)); |
| __m128i vacc4567 = _mm_add_epi32(_mm_srai_epi32(_mm_unpackhi_epi16(vacc0x01234567, vacc0x01234567), 16), _mm_load_si128((const __m128i*) (buffer + 4))); |
| buffer += 8; |
| |
| __m128 vfpacc0123 = _mm_cvtepi32_ps(vacc0123); |
| __m128 vfpacc4567 = _mm_cvtepi32_ps(vacc4567); |
| |
| vfpacc0123 = _mm_mul_ps(vfpacc0123, vscale); |
| vfpacc4567 = _mm_mul_ps(vfpacc4567, vscale); |
| |
| vfpacc0123 = _mm_min_ps(vfpacc0123, voutput_max_less_zero_point); |
| vfpacc4567 = _mm_min_ps(vfpacc4567, voutput_max_less_zero_point); |
| |
| vacc0123 = _mm_cvtps_epi32(vfpacc0123); |
| vacc4567 = _mm_cvtps_epi32(vfpacc4567); |
| |
| __m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point); |
| |
| __m128i vout0123456701234567 = _mm_packs_epi16(vout01234567, vout01234567); |
| vout0123456701234567 = _mm_max_epi8(vout0123456701234567, voutput_min); |
| |
| if XNN_LIKELY(channels >= 8) { |
| _mm_storel_epi64((__m128i*) output, vout0123456701234567); |
| output += 8; |
| channels -= 8; |
| } else { |
| if (channels & 4) { |
| *((uint32_t*) output) = (uint32_t) _mm_cvtsi128_si32(vout0123456701234567); |
| vout0123456701234567 = _mm_srli_epi64(vout0123456701234567, 32); |
| output += 4; |
| } |
| if (channels & 2) { |
| *((uint16_t*) output) = (uint16_t) _mm_extract_epi16(vout0123456701234567, 0); |
| vout0123456701234567 = _mm_srli_epi32(vout0123456701234567, 16); |
| output += 2; |
| } |
| if (channels & 1) { |
| *output = (int8_t) _mm_extract_epi8(vout0123456701234567, 0); |
| output += 1; |
| } |
| channels = 0; |
| } |
| } while (channels != 0); |
| } |
| } |