X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=oss_write.c;h=df9608a8c6a2bbb9b3787df76ce8ec7931604e16;hp=7edd486fccc37a295700b3dedd9cc0da76976e24;hb=481150224edabeee0a6bbfdab232df58e5c1224e;hpb=f113a41a633c0541f0d8418baf40205f4553c885 diff --git a/oss_write.c b/oss_write.c index 7edd486f..df9608a8 100644 --- a/oss_write.c +++ b/oss_write.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009 Andre Noll + * Copyright (C) 2009-2011 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ @@ -11,6 +11,7 @@ #include #include #include +#include #include "para.h" #include "fd.h" @@ -18,71 +19,52 @@ #include "list.h" #include "sched.h" #include "ggo.h" +#include "buffer_tree.h" #include "write.h" +#include "write_common.h" #include "oss_write.cmdline.h" #include "error.h" -/** Always use 16 bit little endian. */ -#define FORMAT AFMT_S16_LE - /** Data specific to the oss writer. */ struct private_oss_write_data { /** The file handle of the device. */ int fd; - /** - * The samplerate given by command line option or the decoder - * of the writer node group. - */ - int samplerate; - /** - * The number of channels, given by command line option or the - * decoder of the writer node group. - */ - int channels; /** Four bytes for stereo streams, two bytes for mono streams. */ int bytes_per_frame; }; -static int oss_pre_select(struct sched *s, struct writer_node *wn) +static int get_oss_format(enum sample_format sf) { - struct private_oss_write_data *powd = wn->private_data; - struct writer_node_group *wng = wn->wng; - - if (*wng->loaded - wn->written < powd->bytes_per_frame) - return 0; - para_fd_set(powd->fd, &s->wfds, &s->max_fileno); - return 1; + switch (sf) { + case SF_S8: return AFMT_S8; + case SF_U8: return AFMT_U8; + case SF_S16_LE: return AFMT_S16_LE; + case SF_S16_BE: return AFMT_S16_BE; + case SF_U16_LE: return AFMT_U16_LE; + case SF_U16_BE: return AFMT_U16_BE; + default: return AFMT_S16_LE; + } } -static int oss_post_select(struct sched *s, struct writer_node *wn) +static void oss_pre_select(struct sched *s, struct task *t) { - int ret; + struct writer_node *wn = container_of(t, struct writer_node, task); struct private_oss_write_data *powd = wn->private_data; - struct writer_node_group *wng = wn->wng; - size_t frames, bytes = *wng->loaded - wn->written; - char *data = *wng->bufp + wn->written; + int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF); - if (*wng->input_error < 0 && bytes < powd->bytes_per_frame) { - wn->written = *wng->loaded; - return *wng->input_error; - } - frames = bytes / powd->bytes_per_frame; - if (!frames) /* less than a single frame available */ - goto out; - if (!FD_ISSET(powd->fd, &s->wfds)) - goto out; - ret = write_nonblock(powd->fd, data, frames * powd->bytes_per_frame, 0); - if (ret < 0) - return ret; - wn->written += ret; -out: - return 1; + if (ret == 0) + return; + if (ret < 0 || !powd) + return sched_min_delay(s); + para_fd_set(powd->fd, &s->wfds, &s->max_fileno); } static void oss_close(struct writer_node *wn) { struct private_oss_write_data *powd = wn->private_data; + if (!powd) + return; close(powd->fd); free(powd); } @@ -98,49 +80,47 @@ static void oss_close(struct writer_node *wn) * incorrectly believe that the device is still in 44.1 kHz mode when actually * the speed is decreased to 22.05 kHz. */ -static int oss_open(struct writer_node *wn) +static int oss_init(struct writer_node *wn, unsigned sample_rate, + unsigned channels, int sample_format) { - int ret, format = FORMAT, channels, samplerate; + int ret, format; + unsigned ch, rate; struct oss_write_args_info *conf = wn->conf; - struct writer_node_group *wng = wn->wng; - struct private_oss_write_data *powd; + struct private_oss_write_data *powd = para_calloc(sizeof(*powd)); + wn->private_data = powd; PARA_INFO_LOG("opening %s\n", conf->device_arg); ret = para_open(conf->device_arg, O_WRONLY, 0); if (ret < 0) - return ret; - powd = para_calloc(sizeof(*powd)); - wn->private_data = powd; + goto err_free; powd->fd = ret; ret = mark_fd_nonblocking(powd->fd); if (ret < 0) goto err; /* set PCM format */ + sample_format = format = get_oss_format(sample_format); ret = ioctl(powd->fd, SNDCTL_DSP_SETFMT, &format); if (ret < 0) { ret = -ERRNO_TO_PARA_ERROR(errno); goto err; } ret = -E_BAD_SAMPLE_FORMAT; - if (format != FORMAT) + if (format != sample_format) goto err; /* set number of channels */ - if (!conf->channels_given && wng->channels) - channels = *wng->channels; - else - channels = conf->channels_arg; - ret = -E_BAD_CHANNEL_COUNT; - if (channels == 0) - goto err; - powd->channels = channels; - ret = ioctl(powd->fd, SNDCTL_DSP_CHANNELS, &channels); + ch = channels; + ret = ioctl(powd->fd, SNDCTL_DSP_CHANNELS, &ch); if (ret < 0) { ret = -ERRNO_TO_PARA_ERROR(errno); goto err; } - if (powd->channels != channels) + ret = -E_BAD_CHANNEL_COUNT; + if (ch != channels) goto err; - powd->bytes_per_frame = channels * 2; + if (format == SF_U8 || format == SF_S8) + powd->bytes_per_frame = ch; + else + powd->bytes_per_frame = ch * 2; /* * Set sampling rate @@ -149,19 +129,15 @@ static int oss_open(struct writer_node *wn) * device, the the highest possible speed is automatically used. The * value actually used is returned as the new value of the argument. */ - if (!conf->samplerate_given && wng->samplerate) - samplerate = *wng->samplerate; - else - samplerate = conf->samplerate_arg; - powd->samplerate = samplerate; - ret = ioctl(powd->fd, SNDCTL_DSP_SPEED, &samplerate); + rate = sample_rate; + ret = ioctl(powd->fd, SNDCTL_DSP_SPEED, &rate); if (ret < 0) { ret = -ERRNO_TO_PARA_ERROR(errno); goto err; } - if (samplerate != powd->samplerate) { - int min = PARA_MIN(samplerate, powd->samplerate), - max = PARA_MAX(samplerate, powd->samplerate); + if (rate != sample_rate) { + unsigned min = PARA_MIN(rate, sample_rate), + max = PARA_MAX(rate, sample_rate); /* * Check whether the returned sample rate differs significantly * from the requested one. @@ -169,30 +145,75 @@ static int oss_open(struct writer_node *wn) ret = -E_BAD_SAMPLERATE; if (100 * max > 110 * min) /* more than 10% deviation */ goto err; - PARA_NOTICE_LOG("using %dHz rather than %dHz\n", samplerate, - powd->samplerate); + PARA_NOTICE_LOG("using %dHz rather than %dHz\n", rate, + sample_rate); } - + wn->min_iqs = powd->bytes_per_frame; return 1; err: close(powd->fd); +err_free: free(powd); return ret; } -__malloc static void *oss_parse_config(const char *options) +static void oss_post_select(__a_unused struct sched *s, + struct task *t) +{ + struct writer_node *wn = container_of(t, struct writer_node, task); + struct private_oss_write_data *powd = wn->private_data; + struct btr_node *btrn = wn->btrn; + size_t frames, bytes; + int ret = btr_node_status(btrn, wn->min_iqs, BTR_NT_LEAF); + char *data; + + if (ret < 0) + goto out; + if (ret == 0) + return; + if (!powd) { + int32_t rate, ch, format; + get_btr_sample_rate(btrn, &rate); + get_btr_channels(btrn, &ch); + get_btr_sample_format(btrn, &format); + ret = oss_init(wn, rate, ch, format); + if (ret < 0) + goto out; + return; + } + btr_merge(btrn, wn->min_iqs); + bytes = btr_next_buffer(btrn, &data); + frames = bytes / powd->bytes_per_frame; + if (!frames) { /* eof and less than a single frame available */ + ret = -E_OSS_EOF; + goto out; + } + ret = 0; + if (!FD_ISSET(powd->fd, &s->wfds)) + goto out; + ret = write_nonblock(powd->fd, data, frames * powd->bytes_per_frame); + if (ret < 0) + goto out; + btr_consume(btrn, ret); + ret = 0; +out: + t->error = ret; + if (ret < 0) + btr_remove_node(btrn); +} + +__malloc static void *oss_parse_config_or_die(const char *options) { - int ret; struct oss_write_args_info *conf = para_calloc(sizeof(*conf)); - PARA_INFO_LOG("options: %s, %zd\n", options, strcspn(options, " \t")); - ret = oss_cmdline_parser_string(options, conf, "oss_write"); - if (ret) - goto err_out; + /* exits on errors */ + oss_cmdline_parser_string(options, conf, "oss_write"); return conf; -err_out: - free(conf); - return NULL; +} + +static void oss_free_config(void *conf) +{ + oss_cmdline_parser_free(conf); } /** @@ -207,11 +228,11 @@ void oss_write_init(struct writer *w) struct oss_write_args_info dummy; oss_cmdline_parser_init(&dummy); - w->open = oss_open; w->close = oss_close; w->pre_select = oss_pre_select; w->post_select = oss_post_select; - w->parse_config = oss_parse_config; + w->parse_config_or_die = oss_parse_config_or_die; + w->free_config = oss_free_config; w->shutdown = NULL; w->help = (struct ggo_help) { .short_help = oss_write_args_info_help,