diff options
author | Robert Jonsson <spamatica@gmail.com> | 2011-03-07 19:01:11 +0000 |
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committer | Robert Jonsson <spamatica@gmail.com> | 2011-03-07 19:01:11 +0000 |
commit | e40fc849149dd97c248866a4a1d026dda5e57b62 (patch) | |
tree | b12b358f3b3a0608001d30403358f8443118ec5f /muse_qt4_evolution/muse/fifo.cpp | |
parent | 1bd4f2e8d9745cabb667b043171cad22c8577768 (diff) |
clean3
Diffstat (limited to 'muse_qt4_evolution/muse/fifo.cpp')
-rw-r--r-- | muse_qt4_evolution/muse/fifo.cpp | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/muse_qt4_evolution/muse/fifo.cpp b/muse_qt4_evolution/muse/fifo.cpp deleted file mode 100644 index 12c2febf..00000000 --- a/muse_qt4_evolution/muse/fifo.cpp +++ /dev/null @@ -1,183 +0,0 @@ -//============================================================================= -// MusE -// Linux Music Editor -// $Id:$ -// -// Copyright (C) 2002-2006 by Werner Schweer and others -// -// This program is free software; you can redistribute it and/or modify -// it under the terms of the GNU General Public License version 2. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -//============================================================================= - -#include "fifo.h" -#include "globals.h" -#include "al/dsp.h" - -//--------------------------------------------------------- -// clear -//--------------------------------------------------------- - -void FifoBase::clear() - { - ridx = 0; - widx = 0; - counter = 0; - } - -//--------------------------------------------------------- -// push -//--------------------------------------------------------- - -void FifoBase::push() - { - widx = (widx + 1) % FIFO_BUFFER; -// q_atomic_increment(&counter); - ++counter; - } - -//--------------------------------------------------------- -// pop -//--------------------------------------------------------- - -void FifoBase::pop() - { - ridx = (ridx + 1) % FIFO_BUFFER; - // q_atomic_decrement(&counter); - --counter; - } - -//--------------------------------------------------------- -// Fifo -//--------------------------------------------------------- - -Fifo::Fifo() - { - nbuffer = FIFO_BUFFER; - buffer = new FifoBuffer*[nbuffer]; - for (int i = 0; i < nbuffer; ++i) - buffer[i] = new FifoBuffer; - clear(); - } - -Fifo::~Fifo() - { - for (int i = 0; i < nbuffer; ++i) - delete buffer[i]; - delete[] buffer; - } - -//--------------------------------------------------------- -// put -// return true if fifo full -//--------------------------------------------------------- - -bool Fifo::put(int segs, unsigned long samples, float** src, unsigned pos) - { - if (counter == nbuffer) { - printf("FIFO %p overrun at 0x%x\n", this, pos); - return true; - } - FifoBuffer* b = buffer[widx]; - int n = segs * samples; - if (b->maxSize < n) { - if (b->buffer) - free(b->buffer); - posix_memalign((void**)&(b->buffer), 16, sizeof(float) * n); - b->maxSize = n; - } - b->size = samples; - b->segs = segs; - b->pos = pos; - for (int i = 0; i < segs; ++i) - AL::dsp->cpy(b->buffer + i * samples, src[i], samples); - push(); - return false; - } - -//--------------------------------------------------------- -// get -// return true if fifo empty -//--------------------------------------------------------- - -bool Fifo::get(int segs, unsigned long samples, float** dst, unsigned pos) - { - FifoBuffer* b; - bool errMsg = true; - for (;;) { - if (counter == 0) { - printf("FIFO %p underrun at 0x%x\n", this, pos); - return true; - } - b = buffer[ridx]; - if (pos == b->pos) - break; - // - // skip all buffer until we get the rigth one or the - // fifo is empty - // -// if (errMsg) - printf("Fifo %p::get(0x%x) n=%d, discard wrong prefetch block(s) 0x%x\n", - this, pos, counter, b->pos); - pop(); - errMsg = false; - } - for (int i = 0; i < segs; ++i) - dst[i] = b->buffer + samples * (i % b->segs); - pop(); - return false; - } - -//--------------------------------------------------------- -// get -// return true if fifo empty -//--------------------------------------------------------- - -bool Fifo::get(int segs, unsigned long samples, float** dst) - { - FifoBuffer* b; - if (counter == 0) { - printf("FIFO %p underrun --cannot happen!\n", this); - return true; - } - b = buffer[ridx]; - for (int i = 0; i < segs; ++i) - dst[i] = b->buffer + samples * (i % b->segs); - pop(); - return false; - } - -//--------------------------------------------------------- -// getWriteBuffer -// return true, if no more buffer available -// (overflow) -//--------------------------------------------------------- - -bool Fifo::getWriteBuffer(int segs, unsigned long samples, float** buf, unsigned pos) - { - if (counter == nbuffer) - return true; - FifoBuffer* b = buffer[widx]; - int n = segs * samples; - if (b->maxSize < n) { - if (b->buffer) - free(b->buffer); - posix_memalign((void**)&(b->buffer), 16, sizeof(float) * n); - b->maxSize = n; - } - for (int i = 0; i < segs; ++i) - buf[i] = b->buffer + i * samples; - b->size = samples; - b->segs = segs; - b->pos = pos; - return false; - } - |