48  * Do anything required before you start reading samples.
51  *      size and encoding of samples,
57     priv_t* pPriv = (priv_t*)ft->priv;  in sunstartread()
68     if (ft->filename == 0 || ft->filename[0] == 0 || !strcasecmp("default", ft->filename)) {  in sunstartread()
71         szDevname = ft->filename;  in sunstartread()
74     pPriv->device = open(szDevname, O_RDONLY);  in sunstartread()
75     if (pPriv->device < 0) {  in sunstartread()
80     if (ft->encoding.encoding == SOX_ENCODING_UNKNOWN) ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartread()
84     if (ioctl(pPriv->device, AUDIO_GETDEV, &audio_dev) < 0) {  in sunstartread()
98         if (ft->encoding.bits_per_sample == 8)  in sunstartread()
100             if (ft->encoding.encoding != SOX_ENCODING_ULAW &&  in sunstartread()
101                 ft->encoding.encoding != SOX_ENCODING_ALAW)  in sunstartread()
104                 ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartread()
107         else if (ft->encoding.bits_per_sample == 16)  in sunstartread()
110             ft->encoding.bits_per_sample = 8;  in sunstartread()
111             ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartread()
115     if (ft->encoding.bits_per_sample == 8) {  in sunstartread()
117         pPriv->sample_shift = 0;  in sunstartread()
118         if (ft->encoding.encoding != SOX_ENCODING_ULAW &&  in sunstartread()
119             ft->encoding.encoding != SOX_ENCODING_ALAW &&  in sunstartread()
120             ft->encoding.encoding != SOX_ENCODING_SIGN2) {  in sunstartread()
124         if ((ft->encoding.encoding == SOX_ENCODING_ULAW ||  in sunstartread()
125              ft->encoding.encoding == SOX_ENCODING_ALAW) &&  in sunstartread()
126             ft->signal.channels == 2)  in sunstartread()
129             ft->signal.channels = 1;  in sunstartread()
132     else if (ft->encoding.bits_per_sample == 16) {  in sunstartread()
134         pPriv->sample_shift = 1;  in sunstartread()
135         if (ft->encoding.encoding != SOX_ENCODING_SIGN2) {  in sunstartread()
145     if (ft->signal.channels == 0)  in sunstartread()
146         ft->signal.channels = 1;  in sunstartread()
147     else if (ft->signal.channels > 1) {  in sunstartread()
151         lsx_report("Try forcing output to signed words or use the avg");  in sunstartread()
153         ft->signal.channels = 2;  in sunstartread()
157     if (ioctl(pPriv->device, AUDIO_GETINFO, &audio_if) < 0) {  in sunstartread()
162     audio_if.record.channels = ft->signal.channels;  in sunstartread()
163     audio_if.record.sample_rate = ft->signal.rate;  in sunstartread()
164     if (ft->encoding.encoding == SOX_ENCODING_ULAW)  in sunstartread()
166     else if (ft->encoding.encoding == SOX_ENCODING_ALAW)  in sunstartread()
172     ioctl(pPriv->device, AUDIO_SETINFO, &audio_if);  in sunstartread()
177     if (audio_if.record.channels != ft->signal.channels) {  in sunstartread()
181     if (audio_if.record.sample_rate != ft->signal.rate) {  in sunstartread()
189     /* Flush any data in the buffers - its probably in the wrong format */  in sunstartread()
191     ioctl(pPriv->device, AUDIO_FLUSH);  in sunstartread()
193     ioctl(pPriv->device, (unsigned long int)I_FLUSH, FLUSHR);  in sunstartread()
195     ioctl(pPriv->device, I_FLUSH, FLUSHR);  in sunstartread()
198     pPriv->cOutput = 0;  in sunstartread()
199     pPriv->pOutput = NULL;  in sunstartread()
213     priv_t* pPriv = (priv_t*)ft->priv;  in sunstartwrite()
215     if (ft->filename == 0 || ft->filename[0] == 0 || !strcasecmp("default", ft->filename)) {  in sunstartwrite()
218         szDevname = ft->filename;  in sunstartwrite()
221     pPriv->device = open(szDevname, O_WRONLY);  in sunstartwrite()
222     if (pPriv->device < 0) {  in sunstartwrite()
229     if (ioctl(pPriv->device, AUDIO_GETDEV, &audio_dev) < 0) {  in sunstartwrite()
242         if (ft->encoding.bits_per_sample == 8)  in sunstartwrite()
244             if (ft->encoding.encoding != SOX_ENCODING_ULAW &&  in sunstartwrite()
245                 ft->encoding.encoding != SOX_ENCODING_ALAW)  in sunstartwrite()
248                 ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartwrite()
251         else if (ft->encoding.bits_per_sample == 16)  in sunstartwrite()
254             ft->encoding.bits_per_sample = 8;  in sunstartwrite()
255             ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartwrite()
259     if (ft->encoding.bits_per_sample == 8)  in sunstartwrite()
262         pPriv->sample_shift = 0;  in sunstartwrite()
263         if (ft->encoding.encoding == SOX_ENCODING_UNKNOWN)  in sunstartwrite()
264             ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartwrite()
265         else if (ft->encoding.encoding != SOX_ENCODING_ULAW &&  in sunstartwrite()
266             ft->encoding.encoding != SOX_ENCODING_ALAW &&  in sunstartwrite()
267             ft->encoding.encoding != SOX_ENCODING_SIGN2) {  in sunstartwrite()
270             ft->encoding.encoding = SOX_ENCODING_ULAW;  in sunstartwrite()
272         if ((ft->encoding.encoding == SOX_ENCODING_ULAW ||  in sunstartwrite()
273              ft->encoding.encoding == SOX_ENCODING_ALAW) &&  in sunstartwrite()
274             ft->signal.channels == 2)  in sunstartwrite()
277             ft->signal.channels = 1;  in sunstartwrite()
281     else if (ft->encoding.bits_per_sample == 16) {  in sunstartwrite()
283         pPriv->sample_shift = 1;  in sunstartwrite()
284         if (ft->encoding.encoding == SOX_ENCODING_UNKNOWN)  in sunstartwrite()
285             ft->encoding.encoding = SOX_ENCODING_SIGN2;  in sunstartwrite()
286         else if (ft->encoding.encoding != SOX_ENCODING_SIGN2) {  in sunstartwrite()
289             ft->encoding.encoding = SOX_ENCODING_SIGN2;  in sunstartwrite()
294         ft->encoding.bits_per_sample = 16;  in sunstartwrite()
295         ft->encoding.encoding = SOX_ENCODING_SIGN2;  in sunstartwrite()
297         pPriv->sample_shift = 1;  in sunstartwrite()
300     if (ft->signal.channels > 1) ft->signal.channels = 2;  in sunstartwrite()
303     if (ioctl(pPriv->device, AUDIO_GETINFO, &audio_if) < 0) {  in sunstartwrite()
308     audio_if.play.channels = ft->signal.channels;  in sunstartwrite()
309     audio_if.play.sample_rate = ft->signal.rate;  in sunstartwrite()
310     if (ft->encoding.encoding == SOX_ENCODING_ULAW)  in sunstartwrite()
312     else if (ft->encoding.encoding == SOX_ENCODING_ALAW)  in sunstartwrite()
318     ioctl(pPriv->device, AUDIO_SETINFO, &audio_if);  in sunstartwrite()
323     if (audio_if.play.channels != ft->signal.channels) {  in sunstartwrite()
327     if (audio_if.play.sample_rate != ft->signal.rate) {  in sunstartwrite()
336     pPriv->cOutput = sox_globals.bufsiz >> pPriv->sample_shift;  in sunstartwrite()
337     pPriv->pOutput = lsx_malloc((size_t)pPriv->cOutput << pPriv->sample_shift);  in sunstartwrite()
344     priv_t* pPriv = (priv_t*)ft->priv;  in sunstop()
345     if (pPriv->device >= 0) {  in sunstop()
346         close(pPriv->device);  in sunstop()
348     if (pPriv->pOutput) {  in sunstop()
349         free(pPriv->pOutput);  in sunstop()
360 #define SOX_SAMPLE_TO_ULAW_BYTE(d,c) sox_14linear2ulaw(SOX_SAMPLE_TO_UNSIGNED(14,d,c) - 0x2000)
361 #define SOX_SAMPLE_TO_ALAW_BYTE(d,c) sox_13linear2alaw(SOX_SAMPLE_TO_UNSIGNED(13,d,c) - 0x1000)
365     priv_t* pPriv = (priv_t*)ft->priv;  in sunread()
367     size_t cbOutputLeft = cOutput << pPriv->sample_shift;  in sunread()
374         cbRead = read(pPriv->device, pbOutput, cbOutputLeft);  in sunread()
382         cbOutputLeft -= cbRead;  in sunread()
386     /* Convert in-place (backwards) */  in sunread()
387     cRead = cOutput - (cbOutputLeft >> pPriv->sample_shift);  in sunread()
388     switch (pPriv->sample_shift)  in sunread()
391         switch (ft->encoding.encoding)  in sunread()
394             for (i = cRead; i != 0; i--) {  in sunread()
395                 pOutput[i - 1] = SOX_UNSIGNED_8BIT_TO_SAMPLE(  in sunread()
396                 ((sox_uint8_t*)pOutput)[i - 1],  in sunread()
401             for (i = cRead; i != 0; i--) {  in sunread()
402                 pOutput[i - 1] = SOX_ULAW_BYTE_TO_SAMPLE(  in sunread()
403                 ((sox_uint8_t*)pOutput)[i - 1],  in sunread()
408             for (i = cRead; i != 0; i--) {  in sunread()
409                 pOutput[i - 1] = SOX_ALAW_BYTE_TO_SAMPLE(  in sunread()
410                 ((sox_uint8_t*)pOutput)[i - 1],  in sunread()
419         for (i = cRead; i != 0; i--) {  in sunread()
420             pOutput[i - 1] = SOX_SIGNED_16BIT_TO_SAMPLE(  in sunread()
421             ((sox_int16_t*)pOutput)[i - 1],  in sunread()
435     priv_t* pPriv = (priv_t*)ft->priv;  in sunwrite()
447         if (cStride > pPriv->cOutput) {  in sunwrite()
448             cStride = pPriv->cOutput;  in sunwrite()
451         switch (pPriv->sample_shift)  in sunwrite()
454             switch (ft->encoding.encoding)  in sunwrite()
458                     ((sox_uint8_t*)pPriv->pOutput)[i] =  in sunwrite()
464                     ((sox_uint8_t*)pPriv->pOutput)[i] =  in sunwrite()
470                     ((sox_uint8_t*)pPriv->pOutput)[i] =  in sunwrite()
480                 ((sox_int16_t*)pPriv->pOutput)[i] =  in sunwrite()
486         cbStride = cStride << pPriv->sample_shift;  in sunwrite()
489             cbWritten = write(pPriv->device, &pPriv->pOutput[i], cbStride - i);  in sunwrite()
497         cInputRemaining -= cStride;  in sunwrite()