FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/truespeech.c	Lines:	181	186	97.3 %
Date:	2020-09-25 23:16:12	Branches:	69	72	95.8 %


/*
 * DSP Group TrueSpeech compatible decoder
 * Copyright (c) 2005 Konstantin Shishkov
 *
 * This file is part of FFmpeg.
 *
 * 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.
 *
 * 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 FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bswapdsp.h"
#include "get_bits.h"
#include "internal.h"

#include "truespeech_data.h"
/**
 * @file
 * TrueSpeech decoder.
 */

/**
 * TrueSpeech decoder context
 */
typedef struct TSContext {
    BswapDSPContext bdsp;
    /* input data */
    DECLARE_ALIGNED(16, 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
    int pulseoff[4];    ///< 4-bit offset of pulse values block
    int pulsepos[4];    ///< 27-bit variable, encodes 7 pulse positions
    int pulseval[4];    ///< 7x2-bit pulse values
    int flag;           ///< 1-bit flag, shows how to choose filters
    /* temporary data */
    int filtbuf[146];   // some big vector used for storing filters
    int prevfilt[8];    // filter from previous frame
    int16_t tmp1[8];    // coefficients for adding to out
    int16_t tmp2[8];    // coefficients for adding to out
    int16_t tmp3[8];    // coefficients for adding to out
    int16_t cvector[8]; // correlated input vector
    int filtval;        // gain value for one function
    int16_t newvec[60]; // tmp vector
    int16_t filters[32]; // filters for every subframe
} TSContext;

static av_cold int truespeech_decode_init(AVCodecContext * avctx)
{
    TSContext *c = avctx->priv_data;

    if (avctx->channels != 1) {
        avpriv_request_sample(avctx, "Channel count %d", avctx->channels);
        return AVERROR_PATCHWELCOME;
    }

    avctx->channel_layout = AV_CH_LAYOUT_MONO;
    avctx->sample_fmt     = AV_SAMPLE_FMT_S16;

    ff_bswapdsp_init(&c->bdsp);

    return 0;
}

static void truespeech_read_frame(TSContext *dec, const uint8_t *input)
{
    GetBitContext gb;

    dec->bdsp.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)
{
    int16_t tmp[8];
    int i, j;

    for(i = 0; i < 8; i++){
        if(i > 0){
            memcpy(tmp, dec->cvector, i * sizeof(*tmp));
            for(j = 0; j < i; j++)
                dec->cvector[j] += (tmp[i - j - 1] * dec->vector[i] + 0x4000) >> 15;
        }
        dec->cvector[i] = (8 - dec->vector[i]) >> 3;
    }
    for(i = 0; i < 8; i++)
        dec->cvector[i] = (dec->cvector[i] * ts_decay_994_1000[i]) >> 15;

    dec->filtval = dec->vector[0];
}

static void truespeech_filters_merge(TSContext *dec)
{
    int i;

    if(!dec->flag){
        for(i = 0; i < 8; i++){
            dec->filters[i + 0] = dec->prevfilt[i];
            dec->filters[i + 8] = dec->prevfilt[i];
        }
    }else{
        for(i = 0; i < 8; i++){
            dec->filters[i + 0]=(dec->cvector[i] * 21846 + dec->prevfilt[i] * 10923 + 16384) >> 15;
            dec->filters[i + 8]=(dec->cvector[i] * 10923 + dec->prevfilt[i] * 21846 + 16384) >> 15;
        }
    }
    for(i = 0; i < 8; i++){
        dec->filters[i + 16] = dec->cvector[i];
        dec->filters[i + 24] = dec->cvector[i];
    }
}

static void truespeech_apply_twopoint_filter(TSContext *dec, int quart)
{
    int16_t tmp[146 + 60], *ptr0, *ptr1;
    const int16_t *filter;
    int i, t, off;

    t = dec->offset2[quart];
    if(t == 127){
        memset(dec->newvec, 0, 60 * sizeof(*dec->newvec));
        return;
    }
    for(i = 0; i < 146; i++)
        tmp[i] = dec->filtbuf[i];
    off = (t / 25) + dec->offset1[quart >> 1] + 18;
    off = av_clip(off, 0, 145);
    ptr0 = tmp + 145 - off;
    ptr1 = tmp + 146;
    filter = ts_order2_coeffs + (t % 25) * 2;
    for(i = 0; i < 60; i++){
        t = (ptr0[0] * filter[0] + ptr0[1] * filter[1] + 0x2000) >> 14;
        ptr0++;
        dec->newvec[i] = t;
        ptr1[i] = t;
    }
}

static void truespeech_place_pulses(TSContext *dec, int16_t *out, int quart)
{
    int16_t tmp[7];
    int i, j, t;
    const int16_t *ptr1;
    int16_t *ptr2;
    int coef;

    memset(out, 0, 60 * sizeof(*out));
    for(i = 0; i < 7; i++) {
        t = dec->pulseval[quart] & 3;
        dec->pulseval[quart] >>= 2;
        tmp[6 - i] = ts_pulse_scales[dec->pulseoff[quart] * 4 + t];
    }

    coef = dec->pulsepos[quart] >> 15;
    ptr1 = ts_pulse_values + 30;
    ptr2 = tmp;
    for(i = 0, j = 3; (i < 30) && (j > 0); i++){
        t = *ptr1++;
        if(coef >= t)
            coef -= t;
        else{
            out[i] = *ptr2++;
            ptr1 += 30;
            j--;
        }
    }
    coef = dec->pulsepos[quart] & 0x7FFF;
    ptr1 = ts_pulse_values;
    for(i = 30, j = 4; (i < 60) && (j > 0); i++){
        t = *ptr1++;
        if(coef >= t)
            coef -= t;
        else{
            out[i] = *ptr2++;
            ptr1 += 30;
            j--;
        }
    }

}

static void truespeech_update_filters(TSContext *dec, int16_t *out, int quart)
{
    int i;

    memmove(dec->filtbuf, &dec->filtbuf[60], 86 * sizeof(*dec->filtbuf));
    for(i = 0; i < 60; i++){
        dec->filtbuf[i + 86] = out[i] + dec->newvec[i] - (dec->newvec[i] >> 3);
        out[i] += dec->newvec[i];
    }
}

static void truespeech_synth(TSContext *dec, int16_t *out, int quart)
{
    int i,k;
    int t[8];
    int16_t *ptr0, *ptr1;

    ptr0 = dec->tmp1;
    ptr1 = dec->filters + quart * 8;
    for(i = 0; i < 60; i++){
        int sum = 0;
        for(k = 0; k < 8; k++)
            sum += ptr0[k] * (unsigned)ptr1[k];
        sum = out[i] + ((int)(sum + 0x800U) >> 12);
        out[i] = av_clip(sum, -0x7FFE, 0x7FFE);
        for(k = 7; k > 0; k--)
            ptr0[k] = ptr0[k - 1];
        ptr0[0] = out[i];
    }

    for(i = 0; i < 8; i++)
        t[i] = (ts_decay_35_64[i] * ptr1[i]) >> 15;

    ptr0 = dec->tmp2;
    for(i = 0; i < 60; i++){
        int sum = 0;
        for(k = 0; k < 8; k++)
            sum += ptr0[k] * t[k];
        for(k = 7; k > 0; k--)
            ptr0[k] = ptr0[k - 1];
        ptr0[0] = out[i];
        out[i] += (- sum) >> 12;
    }

    for(i = 0; i < 8; i++)
        t[i] = (ts_decay_3_4[i] * ptr1[i]) >> 15;

    ptr0 = dec->tmp3;
    for(i = 0; i < 60; i++){
        int sum = out[i] * (1 << 12);
        for(k = 0; k < 8; k++)
            sum += ptr0[k] * t[k];
        for(k = 7; k > 0; k--)
            ptr0[k] = ptr0[k - 1];
        ptr0[0] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);

        sum = ((ptr0[1] * (dec->filtval - (dec->filtval >> 2))) >> 4) + sum;
        sum = sum - (sum >> 3);
        out[i] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);
    }
}

static void truespeech_save_prevvec(TSContext *c)
{
    int i;

    for(i = 0; i < 8; i++)
        c->prevfilt[i] = c->cvector[i];
}

static int truespeech_decode_frame(AVCodecContext *avctx, void *data,
                                   int *got_frame_ptr, AVPacket *avpkt)
{
    AVFrame *frame     = data;
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    TSContext *c = avctx->priv_data;

    int i, j;
    int16_t *samples;
    int iterations, ret;

    iterations = buf_size / 32;

    if (!iterations) {
        av_log(avctx, AV_LOG_ERROR,
               "Too small input buffer (%d bytes), need at least 32 bytes\n", buf_size);
        return -1;
    }

    /* get output buffer */
    frame->nb_samples = iterations * 240;
    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
        return ret;
    samples = (int16_t *)frame->data[0];

    memset(samples, 0, iterations * 240 * sizeof(*samples));

    for(j = 0; j < iterations; j++) {
        truespeech_read_frame(c, buf);
        buf += 32;

        truespeech_correlate_filter(c);
        truespeech_filters_merge(c);

        for(i = 0; i < 4; i++) {
            truespeech_apply_twopoint_filter(c, i);
            truespeech_place_pulses  (c, samples, i);
            truespeech_update_filters(c, samples, i);
            truespeech_synth         (c, samples, i);
            samples += 60;
        }

        truespeech_save_prevvec(c);
    }

    *got_frame_ptr = 1;

    return buf_size;
}

AVCodec ff_truespeech_decoder = {
    .name           = "truespeech",
    .long_name      = NULL_IF_CONFIG_SMALL("DSP Group TrueSpeech"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_TRUESPEECH,
    .priv_data_size = sizeof(TSContext),
    .init           = truespeech_decode_init,
    .decode         = truespeech_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* DSP Group TrueSpeech compatible decoder
3			* Copyright (c) 2005 Konstantin Shishkov
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			#include "libavutil/channel_layout.h"
23			#include "libavutil/intreadwrite.h"
24			#include "avcodec.h"
25			#include "bswapdsp.h"
26			#include "get_bits.h"
27			#include "internal.h"
28
29			#include "truespeech_data.h"
30			/**
31			* @file
32			* TrueSpeech decoder.
33			*/
34
35			/**
36			* TrueSpeech decoder context
37			*/
38			typedef struct TSContext {
39			BswapDSPContext bdsp;
40			/* input data */
41			DECLARE_ALIGNED(16, uint8_t, buffer)[32];
42			int16_t vector[8]; ///< input vector: 5/5/4/4/4/3/3/3
43			int offset1[2]; ///< 8-bit value, used in one copying offset
44			int offset2[4]; ///< 7-bit value, encodes offsets for copying and for two-point filter
45			int pulseoff[4]; ///< 4-bit offset of pulse values block
46			int pulsepos[4]; ///< 27-bit variable, encodes 7 pulse positions
47			int pulseval[4]; ///< 7x2-bit pulse values
48			int flag; ///< 1-bit flag, shows how to choose filters
49			/* temporary data */
50			int filtbuf[146]; // some big vector used for storing filters
51			int prevfilt[8]; // filter from previous frame
52			int16_t tmp1[8]; // coefficients for adding to out
53			int16_t tmp2[8]; // coefficients for adding to out
54			int16_t tmp3[8]; // coefficients for adding to out
55			int16_t cvector[8]; // correlated input vector
56			int filtval; // gain value for one function
57			int16_t newvec[60]; // tmp vector
58			int16_t filters[32]; // filters for every subframe
59			} TSContext;
60
61		2	static av_cold int truespeech_decode_init(AVCodecContext * avctx)
62			{
63		2	TSContext *c = avctx->priv_data;
64
65	✗✓	2	if (avctx->channels != 1) {
66			avpriv_request_sample(avctx, "Channel count %d", avctx->channels);
67			return AVERROR_PATCHWELCOME;
68			}
69
70		2	avctx->channel_layout = AV_CH_LAYOUT_MONO;
71		2	avctx->sample_fmt = AV_SAMPLE_FMT_S16;
72
73		2	ff_bswapdsp_init(&c->bdsp);
74
75		2	return 0;
76			}
77
78		1442	static void truespeech_read_frame(TSContext dec, const uint8_t input)
79			{
80			GetBitContext gb;
81
82		1442	dec->bdsp.bswap_buf((uint32_t ) dec->buffer, (const uint32_t ) input, 8);
83		1442	init_get_bits(&gb, dec->buffer, 32 * 8);
84
85		1442	dec->vector[7] = ts_codebook[7][get_bits(&gb, 3)];
86		1442	dec->vector[6] = ts_codebook[6][get_bits(&gb, 3)];
87		1442	dec->vector[5] = ts_codebook[5][get_bits(&gb, 3)];
88		1442	dec->vector[4] = ts_codebook[4][get_bits(&gb, 4)];
89		1442	dec->vector[3] = ts_codebook[3][get_bits(&gb, 4)];
90		1442	dec->vector[2] = ts_codebook[2][get_bits(&gb, 4)];
91		1442	dec->vector[1] = ts_codebook[1][get_bits(&gb, 5)];
92		1442	dec->vector[0] = ts_codebook[0][get_bits(&gb, 5)];
93		1442	dec->flag = get_bits1(&gb);
94
95		1442	dec->offset1[0] = get_bits(&gb, 4) << 4;
96		1442	dec->offset2[3] = get_bits(&gb, 7);
97		1442	dec->offset2[2] = get_bits(&gb, 7);
98		1442	dec->offset2[1] = get_bits(&gb, 7);
99		1442	dec->offset2[0] = get_bits(&gb, 7);
100
101		1442	dec->offset1[1] = get_bits(&gb, 4);
102		1442	dec->pulseval[1] = get_bits(&gb, 14);
103		1442	dec->pulseval[0] = get_bits(&gb, 14);
104
105		1442	dec->offset1[1] \|= get_bits(&gb, 4) << 4;
106		1442	dec->pulseval[3] = get_bits(&gb, 14);
107		1442	dec->pulseval[2] = get_bits(&gb, 14);
108
109		1442	dec->offset1[0] \|= get_bits1(&gb);
110		1442	dec->pulsepos[0] = get_bits_long(&gb, 27);
111		1442	dec->pulseoff[0] = get_bits(&gb, 4);
112
113		1442	dec->offset1[0] \|= get_bits1(&gb) << 1;
114		1442	dec->pulsepos[1] = get_bits_long(&gb, 27);
115		1442	dec->pulseoff[1] = get_bits(&gb, 4);
116
117		1442	dec->offset1[0] \|= get_bits1(&gb) << 2;
118		1442	dec->pulsepos[2] = get_bits_long(&gb, 27);
119		1442	dec->pulseoff[2] = get_bits(&gb, 4);
120
121		1442	dec->offset1[0] \|= get_bits1(&gb) << 3;
122		1442	dec->pulsepos[3] = get_bits_long(&gb, 27);
123		1442	dec->pulseoff[3] = get_bits(&gb, 4);
124		1442	}
125
126		1442	static void truespeech_correlate_filter(TSContext *dec)
127			{
128			int16_t tmp[8];
129			int i, j;
130
131	✓✓	12978	for(i = 0; i < 8; i++){
132	✓✓	11536	if(i > 0){
133		10094	memcpy(tmp, dec->cvector, i * sizeof(*tmp));
134	✓✓	50470	for(j = 0; j < i; j++)
135		40376	dec->cvector[j] += (tmp[i - j - 1] * dec->vector[i] + 0x4000) >> 15;
136			}
137		11536	dec->cvector[i] = (8 - dec->vector[i]) >> 3;
138			}
139	✓✓	12978	for(i = 0; i < 8; i++)
140		11536	dec->cvector[i] = (dec->cvector[i] * ts_decay_994_1000[i]) >> 15;
141
142		1442	dec->filtval = dec->vector[0];
143		1442	}
144
145		1442	static void truespeech_filters_merge(TSContext *dec)
146			{
147			int i;
148
149	✓✓	1442	if(!dec->flag){
150	✓✓	99	for(i = 0; i < 8; i++){
151		88	dec->filters[i + 0] = dec->prevfilt[i];
152		88	dec->filters[i + 8] = dec->prevfilt[i];
153			}
154			}else{
155	✓✓	12879	for(i = 0; i < 8; i++){
156		11448	dec->filters[i + 0]=(dec->cvector[i] * 21846 + dec->prevfilt[i] * 10923 + 16384) >> 15;
157		11448	dec->filters[i + 8]=(dec->cvector[i] * 10923 + dec->prevfilt[i] * 21846 + 16384) >> 15;
158			}
159			}
160	✓✓	12978	for(i = 0; i < 8; i++){
161		11536	dec->filters[i + 16] = dec->cvector[i];
162		11536	dec->filters[i + 24] = dec->cvector[i];
163			}
164		1442	}
165
166		5768	static void truespeech_apply_twopoint_filter(TSContext *dec, int quart)
167			{
168			int16_t tmp[146 + 60], ptr0, ptr1;
169			const int16_t *filter;
170			int i, t, off;
171
172		5768	t = dec->offset2[quart];
173	✓✓	5768	if(t == 127){
174		358	memset(dec->newvec, 0, 60 * sizeof(*dec->newvec));
175		358	return;
176			}
177	✓✓	795270	for(i = 0; i < 146; i++)
178		789860	tmp[i] = dec->filtbuf[i];
179		5410	off = (t / 25) + dec->offset1[quart >> 1] + 18;
180		5410	off = av_clip(off, 0, 145);
181		5410	ptr0 = tmp + 145 - off;
182		5410	ptr1 = tmp + 146;
183		5410	filter = ts_order2_coeffs + (t % 25) * 2;
184	✓✓	330010	for(i = 0; i < 60; i++){
185		324600	t = (ptr0[0] * filter[0] + ptr0[1] * filter[1] + 0x2000) >> 14;
186		324600	ptr0++;
187		324600	dec->newvec[i] = t;
188		324600	ptr1[i] = t;
189			}
190			}
191
192		5768	static void truespeech_place_pulses(TSContext dec, int16_t out, int quart)
193			{
194			int16_t tmp[7];
195			int i, j, t;
196			const int16_t *ptr1;
197			int16_t *ptr2;
198			int coef;
199
200		5768	memset(out, 0, 60 * sizeof(*out));
201	✓✓	46144	for(i = 0; i < 7; i++) {
202		40376	t = dec->pulseval[quart] & 3;
203		40376	dec->pulseval[quart] >>= 2;
204		40376	tmp[6 - i] = ts_pulse_scales[dec->pulseoff[quart] * 4 + t];
205			}
206
207		5768	coef = dec->pulsepos[quart] >> 15;
208		5768	ptr1 = ts_pulse_values + 30;
209		5768	ptr2 = tmp;
210	✓✓✓✓	136138	for(i = 0, j = 3; (i < 30) && (j > 0); i++){
211		130370	t = *ptr1++;
212	✓✓	130370	if(coef >= t)
213		113066	coef -= t;
214			else{
215		17304	out[i] = *ptr2++;
216		17304	ptr1 += 30;
217		17304	j--;
218			}
219			}
220		5768	coef = dec->pulsepos[quart] & 0x7FFF;
221		5768	ptr1 = ts_pulse_values;
222	✓✓✓✓	141397	for(i = 30, j = 4; (i < 60) && (j > 0); i++){
223		135629	t = *ptr1++;
224	✓✓	135629	if(coef >= t)
225		112557	coef -= t;
226			else{
227		23072	out[i] = *ptr2++;
228		23072	ptr1 += 30;
229		23072	j--;
230			}
231			}
232
233		5768	}
234
235		5768	static void truespeech_update_filters(TSContext dec, int16_t out, int quart)
236			{
237			int i;
238
239		5768	memmove(dec->filtbuf, &dec->filtbuf[60], 86 * sizeof(*dec->filtbuf));
240	✓✓	351848	for(i = 0; i < 60; i++){
241		346080	dec->filtbuf[i + 86] = out[i] + dec->newvec[i] - (dec->newvec[i] >> 3);
242		346080	out[i] += dec->newvec[i];
243			}
244		5768	}
245
246		5768	static void truespeech_synth(TSContext dec, int16_t out, int quart)
247			{
248			int i,k;
249			int t[8];
250			int16_t ptr0, ptr1;
251
252		5768	ptr0 = dec->tmp1;
253		5768	ptr1 = dec->filters + quart * 8;
254	✓✓	351848	for(i = 0; i < 60; i++){
255		346080	int sum = 0;
256	✓✓	3114720	for(k = 0; k < 8; k++)
257		2768640	sum += ptr0[k] * (unsigned)ptr1[k];
258		346080	sum = out[i] + ((int)(sum + 0x800U) >> 12);
259		346080	out[i] = av_clip(sum, -0x7FFE, 0x7FFE);
260	✓✓	2768640	for(k = 7; k > 0; k--)
261		2422560	ptr0[k] = ptr0[k - 1];
262		346080	ptr0[0] = out[i];
263			}
264
265	✓✓	51912	for(i = 0; i < 8; i++)
266		46144	t[i] = (ts_decay_35_64[i] * ptr1[i]) >> 15;
267
268		5768	ptr0 = dec->tmp2;
269	✓✓	351848	for(i = 0; i < 60; i++){
270		346080	int sum = 0;
271	✓✓	3114720	for(k = 0; k < 8; k++)
272		2768640	sum += ptr0[k] * t[k];
273	✓✓	2768640	for(k = 7; k > 0; k--)
274		2422560	ptr0[k] = ptr0[k - 1];
275		346080	ptr0[0] = out[i];
276		346080	out[i] += (- sum) >> 12;
277			}
278
279	✓✓	51912	for(i = 0; i < 8; i++)
280		46144	t[i] = (ts_decay_3_4[i] * ptr1[i]) >> 15;
281
282		5768	ptr0 = dec->tmp3;
283	✓✓	351848	for(i = 0; i < 60; i++){
284		346080	int sum = out[i] * (1 << 12);
285	✓✓	3114720	for(k = 0; k < 8; k++)
286		2768640	sum += ptr0[k] * t[k];
287	✓✓	2768640	for(k = 7; k > 0; k--)
288		2422560	ptr0[k] = ptr0[k - 1];
289		346080	ptr0[0] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);
290
291		346080	sum = ((ptr0[1] * (dec->filtval - (dec->filtval >> 2))) >> 4) + sum;
292		346080	sum = sum - (sum >> 3);
293		346080	out[i] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);
294			}
295		5768	}
296
297		1442	static void truespeech_save_prevvec(TSContext *c)
298			{
299			int i;
300
301	✓✓	12978	for(i = 0; i < 8; i++)
302		11536	c->prevfilt[i] = c->cvector[i];
303		1442	}
304
305		12	static int truespeech_decode_frame(AVCodecContext avctx, void data,
306			int got_frame_ptr, AVPacket avpkt)
307			{
308		12	AVFrame *frame = data;
309		12	const uint8_t *buf = avpkt->data;
310		12	int buf_size = avpkt->size;
311		12	TSContext *c = avctx->priv_data;
312
313			int i, j;
314			int16_t *samples;
315			int iterations, ret;
316
317		12	iterations = buf_size / 32;
318
319	✗✓	12	if (!iterations) {
320			av_log(avctx, AV_LOG_ERROR,
321			"Too small input buffer (%d bytes), need at least 32 bytes\n", buf_size);
322			return -1;
323			}
324
325			/* get output buffer */
326		12	frame->nb_samples = iterations * 240;
327	✗✓	12	if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
328			return ret;
329		12	samples = (int16_t *)frame->data[0];
330
331		12	memset(samples, 0, iterations * 240 * sizeof(*samples));
332
333	✓✓	1454	for(j = 0; j < iterations; j++) {
334		1442	truespeech_read_frame(c, buf);
335		1442	buf += 32;
336
337		1442	truespeech_correlate_filter(c);
338		1442	truespeech_filters_merge(c);
339
340	✓✓	7210	for(i = 0; i < 4; i++) {
341		5768	truespeech_apply_twopoint_filter(c, i);
342		5768	truespeech_place_pulses (c, samples, i);
343		5768	truespeech_update_filters(c, samples, i);
344		5768	truespeech_synth (c, samples, i);
345		5768	samples += 60;
346			}
347
348		1442	truespeech_save_prevvec(c);
349			}
350
351		12	*got_frame_ptr = 1;
352
353		12	return buf_size;
354			}
355
356			AVCodec ff_truespeech_decoder = {
357			.name = "truespeech",
358			.long_name = NULL_IF_CONFIG_SMALL("DSP Group TrueSpeech"),
359			.type = AVMEDIA_TYPE_AUDIO,
360			.id = AV_CODEC_ID_TRUESPEECH,
361			.priv_data_size = sizeof(TSContext),
362			.init = truespeech_decode_init,
363			.decode = truespeech_decode_frame,
364			.capabilities = AV_CODEC_CAP_DR1,
365			};