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opus: allocate buffers for X and freq in iram

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speeds up decoding of 64kbps test file by 19MHz on h300 (cf)
and 2.5MHz on c200 (pp)

Change-Id: Idacd2f8962c20c518055d586daeec6b932b7ded2
Signed-off-by: Nils Wallménius <nils@rockbox.org>
This commit is contained in:
Andree Buschmann 2012-10-01 21:33:27 +02:00 • committed by Nils Wallménius
parent 341e2c46ca
commit b6bcb1338e
1 changed files with 15 additions and 2 deletions
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17
lib/rbcodec/codecs/libopus/celt/celt.c
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@ -2296,6 +2296,9 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, opus_val16 * OPUS_R
RESTORE_STACK;
}
#define FREQ_X_BUF_SIZE (2*8*120) /* stereo * nbShortMdcts * shortMdctSize */
static celt_sig s_freq[FREQ_X_BUF_SIZE] IBSS_ATTR MEM_ALIGN_ATTR; /* 7680 byte */
static celt_norm s_X[FREQ_X_BUF_SIZE] IBSS_ATTR MEM_ALIGN_ATTR; /* 3840 byte */
int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec)
{
int c, i, N;
@ -2398,8 +2401,18 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat
if (effEnd > st->mode->effEBands)
effEnd = st->mode->effEBands;
ALLOC(freq, IMAX(CC,C)*N, celt_sig); /**< Interleaved signal MDCTs */
ALLOC(X, C*N, celt_norm); /**< Interleaved normalised MDCTs */
/**< Interleaved signal MDCTs */
if (FREQ_X_BUF_SIZE >= IMAX(CC,C)*N)
freq = s_freq;
else
ALLOC(freq, IMAX(CC,C)*N, celt_sig);
/**< Interleaved normalised MDCTs */
if (FREQ_X_BUF_SIZE >= C*N)
X = s_X;
else
ALLOC(X, C*N, celt_norm);
ALLOC(bandE, st->mode->nbEBands*C, celt_ener);
c=0; do
for (i=0;i<M*st->mode->eBands[st->start];i++)