diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/import/import_sunau.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/import/import_sunau.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/import/import_sunau.c b/debian/transcode/transcode-1.1.7/import/import_sunau.c new file mode 100644 index 00000000..2a3b37f0 --- /dev/null +++ b/debian/transcode/transcode-1.1.7/import/import_sunau.c @@ -0,0 +1,273 @@ +/* + * import_sunau.c + * + * Copyright (C) Jacob Meuser - September 2004 + * + * This file is part of transcode, a video stream processing tool + * + * transcode is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * transcode 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#define MOD_NAME "import_sunau.so" +#define MOD_VERSION "v0.0.2 (2004-10-02)" +#define MOD_CODEC "(audio) pcm" + +#include "transcode.h" + +static int verbose_flag = TC_QUIET; +static int capability_flag = TC_CAP_PCM; + +#define MOD_PRE sunau +#include "import_def.h" + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/audioio.h> + +#include "libtc/optstr.h" + + +static int sunau_fd = -1; + +int sunau_init(const char *, int, int, int); +int sunau_grab(size_t, char *); +int sunau_stop(void); + + +int sunau_init(const char *audio_device, + int sample_rate, int precision, int channels) +{ + audio_info_t audio_if; + int encoding; + + if(!strcmp(audio_device, "/dev/null") || !strcmp(audio_device, "/dev/zero")) + return(0); + + if(precision != 8 && precision != 16) { + tc_log_warn(MOD_NAME, + "bits/sample must be 8 or 16"); + return(1); + } + + encoding = (precision == 8) ? + AUDIO_ENCODING_ULINEAR : AUDIO_ENCODING_SLINEAR_LE; + + AUDIO_INITINFO(&audio_if); + + audio_if.record.precision = precision; + audio_if.record.channels = channels; + audio_if.record.sample_rate = sample_rate; + audio_if.record.encoding = encoding; + + audio_if.mode = AUMODE_RECORD; + + if ((sunau_fd = open(audio_device, O_RDONLY)) < 0) { + tc_log_perror(MOD_NAME, MOD_NAME "open audio device"); + return(1); + } + + if (ioctl(sunau_fd, AUDIO_SETINFO, &audio_if) < 0) { + tc_log_perror(MOD_NAME, "AUDIO_SETINFO"); + return(1); + } + + if (ioctl(sunau_fd, AUDIO_GETINFO, &audio_if) < 0) { + tc_log_perror(MOD_NAME, "AUDIO_GETINFO"); + return(1); + } + + if (audio_if.record.precision != precision) { + tc_log_warn(MOD_NAME, + "unable to initialize sample size for %s; " + "tried %d, got %d", + audio_device, precision, audio_if.record.precision); + return(1); + } + if (audio_if.record.channels != channels) { + tc_log_warn(MOD_NAME, + "unable to initialize number of channels for %s; " + "tried %d, got %d", + audio_device, channels, audio_if.record.channels); + return(1); + } + if (audio_if.record.sample_rate != sample_rate) { + tc_log_warn(MOD_NAME, + "unable to initialize rate for %s; " + "tried %d, got %d\n", + audio_device, sample_rate, audio_if.record.sample_rate); + return(1); + } + if (audio_if.record.encoding != encoding) { + tc_log_warn(MOD_NAME, + "unable to initialize encoding for %s; " + "tried %d, got %d", + audio_device, encoding, audio_if.record.encoding); + return(1); + } + + if (ioctl(sunau_fd, AUDIO_FLUSH) < 0) { + tc_log_perror(MOD_NAME, "AUDIO_FLUSH"); + return(1); + } + + return(0); +} + +int sunau_grab(size_t size, char *buffer) +{ + int left; + int offset; + int received; + + for (left = size, offset = 0; left > 0;) { + received = read(sunau_fd, buffer + offset, left); + if (received == 0) { + tc_log_warn(MOD_NAME, + "audio grab: received == 0"); + } + if (received < 0) { + if(errno == EINTR) { + received = 0; + } else { + tc_log_perror(MOD_NAME, MOD_NAME "audio grab"); + return(1); + } + } + if (received > left) { + tc_log_warn(MOD_NAME, + "read returns more bytes than requested; " + "requested: %d, returned: %d", + left, received); + return(1); + } + offset += received; + left -= received; + } + return(0); +} + +int sunau_stop(void) +{ + close(sunau_fd); + sunau_fd = -1; + + if (verbose_flag & TC_STATS) { + tc_log_warn(MOD_NAME, + "totals: (not implemented)"); + } + + return(0); +} + + +/* ------------------------------------------------------------ + * + * open stream + * + * ------------------------------------------------------------*/ + +MOD_open +{ + int ret = TC_IMPORT_OK; + + switch (param->flag) { + case TC_VIDEO: + tc_log_warn(MOD_NAME, + "unsupported request (init video)\n"); + ret = TC_IMPORT_ERROR; + break; + case TC_AUDIO: + if (verbose_flag & TC_DEBUG) { + tc_log_info(MOD_NAME, + "sunau audio grabbing\n"); + } + if (sunau_init(vob->audio_in_file, + vob->a_rate, vob->a_bits, vob->a_chan)) { + ret = TC_IMPORT_ERROR; + } + break; + default: + tc_log_warn(MOD_NAME, + "unsupported request (init)"); + ret = TC_IMPORT_ERROR; + break; + } + + return(ret); +} + + +/* ------------------------------------------------------------ + * + * decode stream + * + * ------------------------------------------------------------*/ + +MOD_decode +{ + int ret = TC_IMPORT_OK; + + switch (param->flag) { + case TC_VIDEO: + tc_log_warn(MOD_NAME, + "unsupported request (decode video)"); + ret = TC_IMPORT_ERROR; + break; + case TC_AUDIO: + if (sunau_grab(param->size, param->buffer)) { + tc_log_warn(MOD_NAME, + "error in grabbing audio"); + ret = TC_IMPORT_ERROR; + } + break; + default: + tc_log_warn(MOD_NAME, + "unsupported request (decode)"); + ret = TC_IMPORT_ERROR; + break; + } + + return(ret); +} + +/* ------------------------------------------------------------ + * + * close stream + * + * ------------------------------------------------------------*/ + +MOD_close +{ + int ret = TC_IMPORT_OK; + + switch (param->flag) { + case TC_VIDEO: + tc_log_warn(MOD_NAME, + "unsupported request (close video)"); + ret = TC_IMPORT_ERROR; + break; + case TC_AUDIO: + sunau_stop(); + break; + default: + tc_log_warn(MOD_NAME, + "unsupported request (close)"); + ret = TC_IMPORT_ERROR; + break; + } + + return(ret); +} |