133 for(i = 0; i < 8; i++){
135 memcpy(tmp, dec->
cvector, i *
sizeof(*tmp));
136 for(j = 0; j < i; j++)
138 (dec->
cvector[j] << 15) + 0x4000) >> 15;
142 for(i = 0; i < 8; i++)
153 for(i = 0; i < 8; i++){
158 for(i = 0; i < 8; i++){
163 for(i = 0; i < 8; i++){
171 int16_t tmp[146 + 60], *ptr0, *ptr1;
180 for(i = 0; i < 146; i++)
182 off = (t / 25) + dec->
offset1[quart >> 1] + 18;
183 off = av_clip(off, 0, 145);
184 ptr0 = tmp + 145 -
off;
187 for(i = 0; i < 60; i++){
188 t = (ptr0[0] * filter[0] + ptr0[1] * filter[1] + 0x2000) >> 14;
203 memset(out, 0, 60 *
sizeof(*out));
204 for(i = 0; i < 7; i++) {
213 for(i = 0, j = 3; (i < 30) && (j > 0); i++){
223 coef = dec->
pulsepos[quart] & 0x7FFF;
225 for(i = 30, j = 4; (i < 60) && (j > 0); i++){
243 for(i = 0; i < 60; i++){
253 int16_t *ptr0, *ptr1;
256 ptr1 = dec->
filters + quart * 8;
257 for(i = 0; i < 60; i++){
259 for(k = 0; k < 8; k++)
260 sum += ptr0[k] * ptr1[k];
261 sum = (sum + (out[i] << 12) + 0x800) >> 12;
262 out[i] = av_clip(sum, -0x7FFE, 0x7FFE);
263 for(k = 7; k > 0; k--)
264 ptr0[k] = ptr0[k - 1];
268 for(i = 0; i < 8; i++)
272 for(i = 0; i < 60; i++){
274 for(k = 0; k < 8; k++)
275 sum += ptr0[k] * t[k];
276 for(k = 7; k > 0; k--)
277 ptr0[k] = ptr0[k - 1];
279 out[i] = ((out[i] << 12) - sum) >> 12;
282 for(i = 0; i < 8; i++)
286 for(i = 0; i < 60; i++){
287 int sum = out[i] << 12;
288 for(k = 0; k < 8; k++)
289 sum += ptr0[k] * t[k];
290 for(k = 7; k > 0; k--)
291 ptr0[k] = ptr0[k - 1];
292 ptr0[0] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);
294 sum = ((ptr0[1] * (dec->
filtval - (dec->
filtval >> 2))) >> 4) + sum;
295 sum = sum - (sum >> 3);
296 out[i] = av_clip((sum + 0x800) >> 12, -0x7FFE, 0x7FFE);
304 for(i = 0; i < 8; i++)
309 int *got_frame_ptr,
AVPacket *avpkt)
311 const uint8_t *buf = avpkt->
data;
312 int buf_size = avpkt->
size;
319 iterations = buf_size / 32;
323 "Too small input buffer (%d bytes), need at least 32 bytes\n", buf_size);
335 memset(samples, 0, iterations * 240 *
sizeof(*samples));
337 for(j = 0; j < iterations; j++) {
344 for(i = 0; i < 4; i++) {
362 .
name =
"truespeech",
int pulseval[4]
7x2-bit pulse values
static const int16_t ts_decay_994_1000[8]
static void truespeech_update_filters(TSContext *dec, int16_t *out, int quart)
static int truespeech_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static void truespeech_correlate_filter(TSContext *dec)
AVCodec ff_truespeech_decoder
static void truespeech_apply_twopoint_filter(TSContext *dec, int quart)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
AVFrame * coded_frame
the picture in the bitstream
static void truespeech_filters_merge(TSContext *dec)
static void truespeech_read_frame(TSContext *dec, const uint8_t *input)
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
enum AVSampleFormat sample_fmt
audio sample format
static av_cold int truespeech_decode_init(AVCodecContext *avctx)
bitstream reader API header.
static const int16_t *const ts_codebook[8]
static const int16_t ts_order2_coeffs[25 *2]
av_cold void dsputil_init(DSPContext *c, AVCodecContext *avctx)
static int init(AVCodecParserContext *s)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static const int16_t ts_pulse_values[120]
int pulsepos[4]
27-bit variable, encodes 7 pulse positions
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
int16_t vector[8]
input vector: 5/5/4/4/4/3/3/3
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame)
TrueSpeech decoder context.
int offset2[4]
7-bit value, encodes offsets for copying and for two-point filter
static const int16_t ts_decay_3_4[8]
void av_log_ask_for_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message asking for a sample.
main external API structure.
int offset1[2]
8-bit value, used in one copying offset
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static unsigned int get_bits1(GetBitContext *s)
static struct PPFilter filters[]
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static void truespeech_synth(TSContext *dec, int16_t *out, int quart)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int pulseoff[4]
4-bit offset of pulse values block
common internal api header.
static const int16_t ts_decay_35_64[8]
int flag
1-bit flag, shows how to choose filters
int channels
number of audio channels
static void truespeech_place_pulses(TSContext *dec, int16_t *out, int quart)
static const int16_t ts_pulse_scales[64]
void avcodec_get_frame_defaults(AVFrame *pic)
Set the fields of the given AVFrame to default values.
int nb_samples
number of audio samples (per channel) described by this frame
static void truespeech_save_prevvec(TSContext *c)