* Copyright (c) 2007 Baptiste Coudurier, Benjamin Larsson, Ulion
* Copyright (c) 2008 - 2011 Sascha Sommer, Benjamin Larsson
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "put_bits.h"
#include "wmaprodata.h"
#include "dsputil.h"
+#include "sinewin.h"
#include "wma.h"
/** current decoder limitations */
uint8_t table_idx; ///< index in sf_offsets for the scale factor reference block
float* coeffs; ///< pointer to the subframe decode buffer
uint16_t num_vec_coeffs; ///< number of vector coded coefficients
- DECLARE_ALIGNED(16, float, out)[WMAPRO_BLOCK_MAX_SIZE + WMAPRO_BLOCK_MAX_SIZE / 2]; ///< output buffer
+ DECLARE_ALIGNED(32, float, out)[WMAPRO_BLOCK_MAX_SIZE + WMAPRO_BLOCK_MAX_SIZE / 2]; ///< output buffer
} WMAProChannelCtx;
/**
FF_INPUT_BUFFER_PADDING_SIZE];///< compressed frame data
PutBitContext pb; ///< context for filling the frame_data buffer
FFTContext mdct_ctx[WMAPRO_BLOCK_SIZES]; ///< MDCT context per block size
- DECLARE_ALIGNED(16, float, tmp)[WMAPRO_BLOCK_MAX_SIZE]; ///< IMDCT output buffer
+ DECLARE_ALIGNED(32, float, tmp)[WMAPRO_BLOCK_MAX_SIZE]; ///< IMDCT output buffer
float* windows[WMAPRO_BLOCK_SIZES]; ///< windows for the different block sizes
/* frame size dependent frame information (set during initialization) */
s->samples_per_frame = 1 << ff_wma_get_frame_len_bits(avctx->sample_rate,
3, s->decode_flags);
- /** init previous block len */
- for (i = 0; i < avctx->channels; i++)
- s->channel[i].prev_block_len = s->samples_per_frame;
-
/** subframe info */
log2_max_num_subframes = ((s->decode_flags & 0x38) >> 3);
s->max_num_subframes = 1 << log2_max_num_subframes;
s->num_channels = avctx->channels;
+ if (s->num_channels < 0) {
+ av_log(avctx, AV_LOG_ERROR, "invalid number of channels %d\n", s->num_channels);
+ return AVERROR_INVALIDDATA;
+ } else if (s->num_channels > WMAPRO_MAX_CHANNELS) {
+ av_log_ask_for_sample(avctx, "unsupported number of channels\n");
+ return AVERROR_PATCHWELCOME;
+ }
+
+ /** init previous block len */
+ for (i = 0; i < s->num_channels; i++)
+ s->channel[i].prev_block_len = s->samples_per_frame;
+
/** extract lfe channel position */
s->lfe_channel = -1;
}
}
- if (s->num_channels < 0) {
- av_log(avctx, AV_LOG_ERROR, "invalid number of channels %d\n", s->num_channels);
- return AVERROR_INVALIDDATA;
- } else if (s->num_channels > WMAPRO_MAX_CHANNELS) {
- av_log_ask_for_sample(avctx, "unsupported number of channels\n");
- return AVERROR_PATCHWELCOME;
- }
-
INIT_VLC_STATIC(&sf_vlc, SCALEVLCBITS, HUFF_SCALE_SIZE,
scale_huffbits, 1, 1,
scale_huffcodes, 2, 2, 616);
winlen >>= 1;
s->dsp.vector_fmul_window(start, start, start + winlen,
- window, 0, winlen);
+ window, winlen);
s->channel[c].prev_block_len = s->subframe_len;
}
get_bits_count(&s->gb) - s->subframe_offset);
if (transmit_coeffs) {
+ FFTContext *mdct = &s->mdct_ctx[av_log2(subframe_len) - WMAPRO_BLOCK_MIN_BITS];
/** reconstruct the per channel data */
inverse_channel_transform(s);
for (i = 0; i < s->channels_for_cur_subframe; i++) {
quant, end - start);
}
- /** apply imdct (ff_imdct_half == DCTIV with reverse) */
- ff_imdct_half(&s->mdct_ctx[av_log2(subframe_len) - WMAPRO_BLOCK_MIN_BITS],
- s->channel[c].coeffs, s->tmp);
+ /** apply imdct (imdct_half == DCTIV with reverse) */
+ mdct->imdct_half(mdct, s->channel[c].coeffs, s->tmp);
}
}
/** no idea what these are for, might be the number of samples
that need to be skipped at the beginning or end of a stream */
if (get_bits1(gb)) {
- int skip;
+ int av_unused skip;
/** usually true for the first frame */
if (get_bits1(gb)) {
*@brief wmapro decoder
*/
AVCodec ff_wmapro_decoder = {
- "wmapro",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_WMAPRO,
- sizeof(WMAProDecodeCtx),
- decode_init,
- NULL,
- decode_end,
- decode_packet,
+ .name = "wmapro",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_WMAPRO,
+ .priv_data_size = sizeof(WMAProDecodeCtx),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_packet,
.capabilities = CODEC_CAP_SUBFRAMES,
.flush= flush,
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Audio 9 Professional"),
projects / ffmpeg / blobdiff