87     priv_t * xa = (priv_t *) ft->priv;  in startread()  local
88     char *magic = xa->header.magic;  in startread()
91     if (lsx_readbuf(ft, xa->header.magic, (size_t)4) != 4 ||  in startread()
92         (memcmp("XA\0\0", xa->header.magic, (size_t)4) != 0 &&  in startread()
93          memcmp("XAI\0", xa->header.magic, (size_t)4) != 0 &&  in startread()
94          memcmp("XAJ\0", xa->header.magic, (size_t)4) != 0))  in startread()
101     if (lsx_readdw(ft, &xa->header.outSize) != SOX_SUCCESS) return SOX_EOF;  in startread()
102     if (lsx_readw(ft, &xa->header.tag) != SOX_SUCCESS) return SOX_EOF;  in startread()
103     if (lsx_readw(ft, &xa->header.channels) != SOX_SUCCESS) return SOX_EOF;  in startread()
104     if (lsx_readdw(ft, &xa->header.sampleRate) != SOX_SUCCESS) return SOX_EOF;  in startread()
105     if (lsx_readdw(ft, &xa->header.avgByteRate) != SOX_SUCCESS) return SOX_EOF;  in startread()
106     if (lsx_readw(ft, &xa->header.align) != SOX_SUCCESS) return SOX_EOF;  in startread()
107     if (lsx_readw(ft, &xa->header.bits) != SOX_SUCCESS) return SOX_EOF;  in startread()
117     lsx_debug(" dwOutSize:     %u", xa->header.outSize);  in startread()
118     lsx_debug(" wTag:          0x%04x", xa->header.tag);  in startread()
119     lsx_debug(" wChannels:     %u", xa->header.channels);  in startread()
120     lsx_debug(" dwSampleRate:  %u", xa->header.sampleRate);  in startread()
121     lsx_debug(" dwAvgByteRate: %u", xa->header.avgByteRate);  in startread()
122     lsx_debug(" wAlign:        %u", xa->header.align);  in startread()
123     lsx_debug(" wBits:         %u", xa->header.bits);  in startread()
128     if (!ft->encoding.bits_per_sample || ft->encoding.bits_per_sample == xa->header.bits) {  in startread()
129         ft->encoding.bits_per_sample = xa->header.bits;  in startread()
134     if (ft->signal.channels == 0 || ft->signal.channels == xa->header.channels) {  in startread()
135         ft->signal.channels = xa->header.channels;  in startread()
140     if (ft->signal.rate == 0 || ft->signal.rate == xa->header.sampleRate) {  in startread()
141         ft->signal.rate = xa->header.sampleRate;  in startread()
160     if (xa->header.bits != ft->encoding.bits_per_sample) {  in startread()
162             xa->header.bits, ft->encoding.bits_per_sample);  in startread()
163         xa->header.bits = ft->encoding.bits_per_sample;  in startread()
165     if (xa->header.align != (ft->encoding.bits_per_sample >> 3) * xa->header.channels) {  in startread()
167             xa->header.align, (ft->encoding.bits_per_sample >> 3) * xa->header.channels);  in startread()
168         xa->header.align = (ft->encoding.bits_per_sample >> 3) * xa->header.channels;  in startread()
170     if (xa->header.avgByteRate != (xa->header.align * xa->header.sampleRate)) {  in startread()
172             xa->header.avgByteRate, xa->header.align * xa->header.sampleRate);  in startread()
173         xa->header.avgByteRate = xa->header.align * xa->header.sampleRate;  in startread()
177     xa->blockSize = ft->signal.channels * 0xf;  in startread()
178     xa->bufPos = xa->blockSize;  in startread()
181     xa->buf = lsx_calloc(1, (size_t)xa->blockSize);  in startread()
184     xa->state = lsx_calloc(sizeof(xa_state_t), ft->signal.channels);  in startread()
187     xa->bytesDecoded = 0;  in startread()
198     priv_t * xa = (priv_t *) ft->priv;  in read_samples()  local
206         if (xa->bufPos >= xa->blockSize) {  in read_samples()
208             bytes = lsx_readbuf(ft, xa->buf, (size_t) xa->blockSize);  in read_samples()
209             if (bytes < xa->blockSize) {  in read_samples()
222             xa->bufPos = 0;  in read_samples()
225                 inByte = xa->buf[i];  in read_samples()
226                 xa->state[i].c1 = EA_ADPCM_Table[HNIBBLE(inByte)];  in read_samples()
227                 xa->state[i].c2 = EA_ADPCM_Table[HNIBBLE(inByte) + 4];  in read_samples()
228                 xa->state[i].shift = LNIBBLE(inByte) + 8;  in read_samples()
230             xa->bufPos += ft->signal.channels;  in read_samples()
235                 sample = HNIBBLE(xa->buf[xa->bufPos+i]);  in read_samples()
236                 sample = (sample << 28) >> xa->state[i].shift;  in read_samples()
238                           xa->state[i].curSample * xa->state[i].c1 +  in read_samples()
239                           xa->state[i].prevSample * xa->state[i].c2 + 0x80) >> 8;  in read_samples()
241                 xa->state[i].prevSample = xa->state[i].curSample;  in read_samples()
242                 xa->state[i].curSample = sample;  in read_samples()
245                 xa->bytesDecoded += (ft->encoding.bits_per_sample >> 3);  in read_samples()
249                 sample = LNIBBLE(xa->buf[xa->bufPos+i]);  in read_samples()
250                 sample = (sample << 28) >> xa->state[i].shift;  in read_samples()
252                           xa->state[i].curSample * xa->state[i].c1 +  in read_samples()
253                           xa->state[i].prevSample * xa->state[i].c2 + 0x80) >> 8;  in read_samples()
255                 xa->state[i].prevSample = xa->state[i].curSample;  in read_samples()
256                 xa->state[i].curSample = sample;  in read_samples()
259                 xa->bytesDecoded += (ft->encoding.bits_per_sample >> 3);  in read_samples()
262             xa->bufPos += ft->signal.channels;  in read_samples()
273     priv_t * xa = (priv_t *) ft->priv;  in stopread()  local
278     free(xa->buf);  in stopread()
279     xa->buf = NULL;  in stopread()
280     free(xa->state);  in stopread()
281     xa->state = NULL;  in stopread()
286 LSX_FORMAT_HANDLER(xa)  in LSX_FORMAT_HANDLER()  argument