From 52781d7f50556c622fc1efacadec6759fb519450 Mon Sep 17 00:00:00 2001 From: Andre Noll Date: Tue, 5 Jan 2010 06:09:32 +0100 Subject: [PATCH] btr support for the oss writer. --- error.h | 1 + oss_write.c | 135 ++++++++++++++++++++++++++++++++++++++++++---------- 2 files changed, 112 insertions(+), 24 deletions(-) diff --git a/error.h b/error.h index 5854dd37..237fbc23 100644 --- a/error.h +++ b/error.h @@ -79,6 +79,7 @@ extern const char **para_errlist[]; PARA_ERROR(BAD_SAMPLE_FORMAT, "sample format not supported"), \ PARA_ERROR(BAD_CHANNEL_COUNT, "channel count not supported"), \ PARA_ERROR(BAD_SAMPLERATE, "sample rate not supported"), \ + PARA_ERROR(OSS_EOF, "oss: end of file"), \ #define COMPRESS_FILTER_ERRORS \ diff --git a/oss_write.c b/oss_write.c index bda0ad4c..f8feb43a 100644 --- a/oss_write.c +++ b/oss_write.c @@ -21,6 +21,7 @@ #include "ggo.h" #include "buffer_tree.h" #include "write.h" +#include "write_common.h" #include "oss_write.cmdline.h" #include "error.h" @@ -56,6 +57,26 @@ static int oss_pre_select(struct sched *s, struct writer_node *wn) return 1; } +static void oss_pre_select_btr(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; + int ret = btr_node_status(wn->btrn, wn->min_iqs); + + t->error = 0; + if (ret < 0) + goto min_delay; + if (ret == 0) + return; + if (!powd) + goto min_delay; + para_fd_set(powd->fd, &s->wfds, &s->max_fileno); + return; +min_delay: + s->timeout.tv_sec = 0; + s->timeout.tv_usec = 1; +} + static int oss_post_select(struct sched *s, struct writer_node *wn) { int ret; @@ -86,6 +107,7 @@ static void oss_close(struct writer_node *wn) struct private_oss_write_data *powd = wn->private_data; close(powd->fd); + oss_cmdline_parser_free(wn->conf); free(powd); } @@ -100,19 +122,16 @@ 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 samplerate, unsigned channels) { - int ret, format = FORMAT, channels, samplerate; + int ret, format = FORMAT, 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 = wn->private_data; 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; powd->fd = ret; ret = mark_fd_nonblocking(powd->fd); if (ret < 0) @@ -127,22 +146,22 @@ static int oss_open(struct writer_node *wn) if (format != FORMAT) goto err; /* set number of channels */ - if (!conf->channels_given && wng->channels) - channels = *wng->channels; + if (!conf->channels_given && channels != 0) + ch = channels; else - channels = conf->channels_arg; + ch = conf->channels_arg; ret = -E_BAD_CHANNEL_COUNT; - if (channels == 0) + if (ch == 0) goto err; - powd->channels = channels; - ret = ioctl(powd->fd, SNDCTL_DSP_CHANNELS, &channels); + powd->channels = ch; + ret = ioctl(powd->fd, SNDCTL_DSP_CHANNELS, &ch); if (ret < 0) { ret = -ERRNO_TO_PARA_ERROR(errno); goto err; } - if (powd->channels != channels) + if (powd->channels != ch) goto err; - powd->bytes_per_frame = channels * 2; + powd->bytes_per_frame = ch * 2; /* * Set sampling rate @@ -151,19 +170,19 @@ 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; + if (!conf->samplerate_given && samplerate != 0) + rate = samplerate; else - samplerate = conf->samplerate_arg; - powd->samplerate = samplerate; - ret = ioctl(powd->fd, SNDCTL_DSP_SPEED, &samplerate); + rate = conf->samplerate_arg; + powd->samplerate = 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 != powd->samplerate) { + int min = PARA_MIN(rate, powd->samplerate), + max = PARA_MAX(rate, powd->samplerate); /* * Check whether the returned sample rate differs significantly * from the requested one. @@ -171,10 +190,10 @@ 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, + PARA_NOTICE_LOG("using %dHz rather than %dHz\n", rate, powd->samplerate); } - + wn->min_iqs = powd->bytes_per_frame; return 1; err: close(powd->fd); @@ -182,6 +201,72 @@ err: return ret; } +static void oss_post_select_btr(__a_unused struct sched *s, + struct task *t) +{ + struct writer_node *wn = container_of(t, struct writer_node, task); + struct oss_write_args_info *conf = wn->conf; + 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); + char *data; + + if (ret < 0) + goto out; + if (ret == 0) + return; + if (powd->fd < 0) { + int32_t rate, ch; + ret = -1; + if (!conf->samplerate_given) /* config option trumps btr_exec */ + ret = get_btr_samplerate(wn->btrn, &rate); + if (ret < 0) + rate = conf->samplerate_arg; + ret = -1; + if (!conf->channels_given) + ret = get_btr_channels(wn->btrn, &ch); + if (ret < 0) + ch = conf->channels_arg; + ret = oss_init(wn, rate, ch); + if (ret < 0) + goto out; + return; + } + 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, 0); + if (ret < 0) + goto out; + btr_consume(btrn, ret); + ret = 0; +out: + t->error = ret; +} + +static int oss_open(struct writer_node *wn) +{ + struct writer_node_group *wng; + struct private_oss_write_data *powd; + + powd = para_calloc(sizeof(*powd)); + wn->private_data = powd; + if (!wn->btrn) { + wng = wn->wng; + return oss_init(wn, wng->samplerate ? *wng->samplerate : 0, + wng->channels? *wng->channels : 0); + } + powd->fd = -1; + return 1; +} + __malloc static void *oss_parse_config(const char *options) { int ret; @@ -212,7 +297,9 @@ void oss_write_init(struct writer *w) w->open = oss_open; w->close = oss_close; w->pre_select = oss_pre_select; + w->pre_select_btr = oss_pre_select_btr; w->post_select = oss_post_select; + w->post_select_btr = oss_post_select_btr; w->parse_config = oss_parse_config; w->shutdown = NULL; w->help = (struct ggo_help) { -- 2.30.2