* DSP Group TrueSpeech compatible decoder
* Copyright (c) 2005 Konstantin Shishkov
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
#include "truespeech_data.h"
/**
* TrueSpeech decoder context
*/
typedef struct {
+ DSPContext dsp;
/* input data */
+ uint8_t buffer[32];
int16_t vector[8]; ///< input vector: 5/5/4/4/4/3/3/3
int offset1[2]; ///< 8-bit value, used in one copying offset
int offset2[4]; ///< 7-bit value, encodes offsets for copying and for two-point filter
static av_cold int truespeech_decode_init(AVCodecContext * avctx)
{
-// TSContext *c = avctx->priv_data;
+ TSContext *c = avctx->priv_data;
+
+ if (avctx->channels != 1) {
+ av_log_ask_for_sample(avctx, "Unsupported channel count: %d\n", avctx->channels);
+ return AVERROR(EINVAL);
+ }
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+
+ dsputil_init(&c->dsp, avctx);
+
return 0;
}
static void truespeech_read_frame(TSContext *dec, const uint8_t *input)
{
- uint32_t t;
-
- /* first dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->flag = t & 1;
-
- dec->vector[0] = ts_codebook[0][(t >> 1) & 0x1F];
- dec->vector[1] = ts_codebook[1][(t >> 6) & 0x1F];
- dec->vector[2] = ts_codebook[2][(t >> 11) & 0xF];
- dec->vector[3] = ts_codebook[3][(t >> 15) & 0xF];
- dec->vector[4] = ts_codebook[4][(t >> 19) & 0xF];
- dec->vector[5] = ts_codebook[5][(t >> 23) & 0x7];
- dec->vector[6] = ts_codebook[6][(t >> 26) & 0x7];
- dec->vector[7] = ts_codebook[7][(t >> 29) & 0x7];
-
- /* second dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->offset2[0] = (t >> 0) & 0x7F;
- dec->offset2[1] = (t >> 7) & 0x7F;
- dec->offset2[2] = (t >> 14) & 0x7F;
- dec->offset2[3] = (t >> 21) & 0x7F;
-
- dec->offset1[0] = ((t >> 28) & 0xF) << 4;
-
- /* third dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulseval[0] = (t >> 0) & 0x3FFF;
- dec->pulseval[1] = (t >> 14) & 0x3FFF;
-
- dec->offset1[1] = (t >> 28) & 0x0F;
-
- /* fourth dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulseval[2] = (t >> 0) & 0x3FFF;
- dec->pulseval[3] = (t >> 14) & 0x3FFF;
-
- dec->offset1[1] |= ((t >> 28) & 0x0F) << 4;
-
- /* fifth dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulsepos[0] = (t >> 4) & 0x7FFFFFF;
-
- dec->pulseoff[0] = (t >> 0) & 0xF;
-
- dec->offset1[0] |= (t >> 31) & 1;
-
- /* sixth dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulsepos[1] = (t >> 4) & 0x7FFFFFF;
-
- dec->pulseoff[1] = (t >> 0) & 0xF;
-
- dec->offset1[0] |= ((t >> 31) & 1) << 1;
-
- /* seventh dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulsepos[2] = (t >> 4) & 0x7FFFFFF;
-
- dec->pulseoff[2] = (t >> 0) & 0xF;
-
- dec->offset1[0] |= ((t >> 31) & 1) << 2;
-
- /* eighth dword */
- t = AV_RL32(input);
- input += 4;
-
- dec->pulsepos[3] = (t >> 4) & 0x7FFFFFF;
-
- dec->pulseoff[3] = (t >> 0) & 0xF;
-
- dec->offset1[0] |= ((t >> 31) & 1) << 3;
-
+ GetBitContext gb;
+
+ dec->dsp.bswap_buf((uint32_t *)dec->buffer, (const uint32_t *)input, 8);
+ init_get_bits(&gb, dec->buffer, 32 * 8);
+
+ dec->vector[7] = ts_codebook[7][get_bits(&gb, 3)];
+ dec->vector[6] = ts_codebook[6][get_bits(&gb, 3)];
+ dec->vector[5] = ts_codebook[5][get_bits(&gb, 3)];
+ dec->vector[4] = ts_codebook[4][get_bits(&gb, 4)];
+ dec->vector[3] = ts_codebook[3][get_bits(&gb, 4)];
+ dec->vector[2] = ts_codebook[2][get_bits(&gb, 4)];
+ dec->vector[1] = ts_codebook[1][get_bits(&gb, 5)];
+ dec->vector[0] = ts_codebook[0][get_bits(&gb, 5)];
+ dec->flag = get_bits1(&gb);
+
+ dec->offset1[0] = get_bits(&gb, 4) << 4;
+ dec->offset2[3] = get_bits(&gb, 7);
+ dec->offset2[2] = get_bits(&gb, 7);
+ dec->offset2[1] = get_bits(&gb, 7);
+ dec->offset2[0] = get_bits(&gb, 7);
+
+ dec->offset1[1] = get_bits(&gb, 4);
+ dec->pulseval[1] = get_bits(&gb, 14);
+ dec->pulseval[0] = get_bits(&gb, 14);
+
+ dec->offset1[1] |= get_bits(&gb, 4) << 4;
+ dec->pulseval[3] = get_bits(&gb, 14);
+ dec->pulseval[2] = get_bits(&gb, 14);
+
+ dec->offset1[0] |= get_bits1(&gb);
+ dec->pulsepos[0] = get_bits_long(&gb, 27);
+ dec->pulseoff[0] = get_bits(&gb, 4);
+
+ dec->offset1[0] |= get_bits1(&gb) << 1;
+ dec->pulsepos[1] = get_bits_long(&gb, 27);
+ dec->pulseoff[1] = get_bits(&gb, 4);
+
+ dec->offset1[0] |= get_bits1(&gb) << 2;
+ dec->pulsepos[2] = get_bits_long(&gb, 27);
+ dec->pulseoff[2] = get_bits(&gb, 4);
+
+ dec->offset1[0] |= get_bits1(&gb) << 3;
+ dec->pulsepos[3] = get_bits_long(&gb, 27);
+ dec->pulseoff[3] = get_bits(&gb, 4);
}
static void truespeech_correlate_filter(TSContext *dec)
for(i = 0; i < 8; i++){
if(i > 0){
- memcpy(tmp, dec->cvector, i * 2);
+ memcpy(tmp, dec->cvector, i * sizeof(*tmp));
for(j = 0; j < i; j++)
dec->cvector[j] = ((tmp[i - j - 1] * dec->vector[i]) +
(dec->cvector[j] << 15) + 0x4000) >> 15;
t = dec->offset2[quart];
if(t == 127){
- memset(dec->newvec, 0, 60 * 2);
+ memset(dec->newvec, 0, 60 * sizeof(*dec->newvec));
return;
}
for(i = 0; i < 146; i++)
int16_t *ptr2;
int coef;
- memset(out, 0, 60 * 2);
+ memset(out, 0, 60 * sizeof(*out));
for(i = 0; i < 7; i++) {
t = dec->pulseval[quart] & 3;
dec->pulseval[quart] >>= 2;
int i, j;
short *samples = data;
- int consumed = 0;
- int16_t out_buf[240];
int iterations, out_size;
iterations = buf_size / 32;
return AVERROR(EINVAL);
}
+ memset(samples, 0, out_size);
+
for(j = 0; j < iterations; j++) {
- truespeech_read_frame(c, buf + consumed);
- consumed += 32;
+ truespeech_read_frame(c, buf);
+ buf += 32;
truespeech_correlate_filter(c);
truespeech_filters_merge(c);
- memset(out_buf, 0, 240 * 2);
for(i = 0; i < 4; i++) {
truespeech_apply_twopoint_filter(c, i);
- truespeech_place_pulses(c, out_buf + i * 60, i);
- truespeech_update_filters(c, out_buf + i * 60, i);
- truespeech_synth(c, out_buf + i * 60, i);
+ truespeech_place_pulses (c, samples, i);
+ truespeech_update_filters(c, samples, i);
+ truespeech_synth (c, samples, i);
+ samples += 60;
}
truespeech_save_prevvec(c);
-
- /* finally output decoded frame */
- for(i = 0; i < 240; i++)
- *samples++ = out_buf[i];
-
}
*data_size = out_size;
- return consumed;
+ return buf_size;
}
AVCodec ff_truespeech_decoder = {
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