X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=play.c;h=fc33f68b9e13ee4111ce7ae915e5ace1fb888235;hp=f459e4dd538506ac73f9049002cdaf255786e7ce;hb=d02f88dfc3911262174afe6017e04d70e8557a7a;hpb=301d17664161885d5e92d18404d53862de3c77f8 diff --git a/play.c b/play.c index f459e4dd..fc33f68b 100644 --- a/play.c +++ b/play.c @@ -1,329 +1,112 @@ /* - * Copyright (C) 2005-2006 Andre Noll + * Copyright (C) 2012 Andre Noll * - * This program 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 of the License, or - * (at your option) any later version. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + * Licensed under the GPL v2. For licencing details see COPYING. */ -/* - * Based in parts on aplay.c from the alsa-utils-1.0.8 package, - * Copyright (c) by Jaroslav Kysela , which is - * based on the vplay program by Michael Beck. - */ +/** \file play.c Paraslash's standalone player. */ + +#include -#define WAV_HEADER_LEN 44 -#include /* gettimeofday */ #include "para.h" -#include "fd.h" +#include "list.h" #include "play.cmdline.h" -#include - -enum { E_BROKEN_CONF, /* Broken configuration for this PCM */ - E_ACCESS_TYPE, /* Access type not available */ - E_SAMPLE_FORMAT, /* Sample format not available */ - E_CHANNEL_COUNT, /* Channels count not available */ - E_HW_PARAMS, /* Unable to install hw params */ - E_SW_PARAMS, /* Unable to install sw params */ - E_BAD_PERIOD, /* Can't use period equal to buffer size */ - E_GET_XFER, /* Unable to obtain xfer align */ - E_SET_XFER, /* snd_pcm_sw_params_set_xfer_align failed */ - E_MEM, /* not enough memory */ - E_READ, /* read error */ - E_WRITE, /* write error */ - E_PIPE, /* write to pipe with other side closed */ - E_PCM_OPEN, /* unable to open pcm */ - E_SND_PCM_INFO, /* pcm info error */ - E_GET_BUFFER_TIME, /* snd_pcm_hw_params_get_buffer_time_max failed */ - E_SET_BUFFER_TIME, /* snd_pcm_hw_params_set_buffer_time_near failed */ - E_SET_RATE, /* snd_pcm_hw_params_set_rate_near failed */ - E_START_THRESHOLD, /* snd_pcm_sw_params_set_start_threshold failed */ - E_STOP_THRESHOLD, /* snd_pcm_sw_params_set_stop_threshold failed */ - E_LOG, /* snd_output_stdio_attach failed */ - E_SYNTAX /* could not parse start_time option */ -}; - -#define FORMAT SND_PCM_FORMAT_S16_LE - -#define EXIT(EXP) \ -do { if (EXP) \ - fprintf (stderr, "error: " #EXP "\n"); exit(EXP);} \ -while (0) - -static snd_pcm_t *handle; -static snd_pcm_uframes_t chunk_size; -static unsigned char *audiobuf; -static size_t bytes_per_frame; -static struct timeval *start_time; -static struct gengetopt_args_info conf; - -void para_log(__a_unused int ll, const char* fmt,...) -{ - va_list argp; - - va_start(argp, fmt); - vfprintf(stderr, fmt, argp); - va_end(argp); -} - -/* - * read_wav_header - read WAV_HEADER_LEN bytes from stdin to audio buffer - * - * Exit on errors and on eof before WAV_HEADER_LEN could be read. - */ -static void read_wav_header(void) -{ - ssize_t ret, count = 0; - - while (count < WAV_HEADER_LEN) { - ret = read(STDIN_FILENO, audiobuf + count, WAV_HEADER_LEN - count); - if (ret <= 0) - EXIT(E_READ); - count += ret; - } -} - -/* - * open and prepare the PCM handle for writing - * - * Install PCM software and hardware configuration. Exit on errors. - */ -static void alsa_init(void) -{ - snd_pcm_hw_params_t *hwparams; - snd_pcm_sw_params_t *swparams; - snd_pcm_uframes_t buffer_size, xfer_align, start_threshold, - stop_threshold; - unsigned buffer_time = 0; - int err; - snd_pcm_info_t *info; - snd_output_t *log; - - snd_pcm_info_alloca(&info); - if (snd_output_stdio_attach(&log, stderr, 0) < 0) - EXIT(E_LOG); - err = snd_pcm_open(&handle, conf.device_arg, - SND_PCM_STREAM_PLAYBACK, 0); - if (err < 0) - EXIT(E_PCM_OPEN); - if ((err = snd_pcm_info(handle, info)) < 0) - EXIT(E_SND_PCM_INFO); +#include "filter.cmdline.h" +#include "error.h" +#include "ggo.h" +#include "buffer_tree.h" +#include "version.h" +#include "string.h" +#include "sched.h" +#include "filter.h" +#include "afh.h" +#include "recv.h" +#include "write.h" +#include "write_common.h" +#include "fd.h" - snd_pcm_hw_params_alloca(&hwparams); - snd_pcm_sw_params_alloca(&swparams); - if (snd_pcm_hw_params_any(handle, hwparams) < 0) - EXIT(E_BROKEN_CONF); - if (snd_pcm_hw_params_set_access(handle, hwparams, - SND_PCM_ACCESS_RW_INTERLEAVED) < 0) - EXIT(E_ACCESS_TYPE); - if (snd_pcm_hw_params_set_format(handle, hwparams, FORMAT) < 0) - EXIT(E_SAMPLE_FORMAT); - if (snd_pcm_hw_params_set_channels(handle, hwparams, conf.channels_arg) < 0) - EXIT(E_CHANNEL_COUNT); - if (snd_pcm_hw_params_set_rate_near(handle, hwparams, - (unsigned int*) &conf.sample_rate_arg, 0) < 0) - EXIT(E_SET_RATE); - err = snd_pcm_hw_params_get_buffer_time_max(hwparams, &buffer_time, 0); - if (err < 0 || !buffer_time) - EXIT(E_GET_BUFFER_TIME); - PARA_DEBUG_LOG("buffer time: %d\n", buffer_time); - if (snd_pcm_hw_params_set_buffer_time_near(handle, hwparams, - &buffer_time, 0) < 0) - EXIT(E_SET_BUFFER_TIME); - if (snd_pcm_hw_params(handle, hwparams) < 0) - EXIT(E_HW_PARAMS); - snd_pcm_hw_params_get_period_size(hwparams, &chunk_size, 0); - snd_pcm_hw_params_get_buffer_size(hwparams, &buffer_size); - PARA_DEBUG_LOG("buffer size: %lu, period_size: %lu\n", buffer_size, chunk_size); - if (chunk_size == buffer_size) - EXIT(E_BAD_PERIOD); - snd_pcm_sw_params_current(handle, swparams); - err = snd_pcm_sw_params_get_xfer_align(swparams, &xfer_align); - if (err < 0 || !xfer_align) - EXIT(E_GET_XFER); -// snd_pcm_sw_params_set_sleep_min(handle, swparams, 0); - snd_pcm_sw_params_set_avail_min(handle, swparams, chunk_size); - /* round to closest transfer boundary */ - start_threshold = (buffer_size / xfer_align) * xfer_align; - if (start_threshold < 1) - start_threshold = 1; - if (snd_pcm_sw_params_set_start_threshold(handle, swparams, - start_threshold) < 0) - EXIT(E_START_THRESHOLD); - stop_threshold = buffer_size; - if (snd_pcm_sw_params_set_stop_threshold(handle, swparams, - stop_threshold) < 0) - EXIT(E_STOP_THRESHOLD); - if (snd_pcm_sw_params_set_xfer_align(handle, swparams, xfer_align) < 0) - EXIT(E_SET_XFER); - if (snd_pcm_sw_params(handle, swparams) < 0) - EXIT(E_SW_PARAMS); - bytes_per_frame = snd_pcm_format_physical_width(FORMAT) * conf.channels_arg / 8; -} +static struct play_args_info conf; -/** - * push out pcm frames - * \param data pointer do data to be written - * \param count number of frames - * - * \return Number of bytes written. Exit on errors. - */ -int alsa_write(u_char *data, size_t count) -{ - snd_pcm_sframes_t r, result = 0; - while (count > 0) { - /* write interleaved frames */ - r = snd_pcm_writei(handle, data, count); - if (r < 0) - PARA_ERROR_LOG("write error: %s\n", snd_strerror(r)); - if (r == -EAGAIN || (r >= 0 && r < count)) - snd_pcm_wait(handle, 1); - else if (r == -EPIPE) - snd_pcm_prepare(handle); - else if (r < 0) - EXIT(E_WRITE); - if (r > 0) { - result += r; - count -= r; - data += r * bytes_per_frame; - } - } - return result * bytes_per_frame; -} +/** Initialize the array of errors for para_play. */ +INIT_PLAY_ERRLISTS; -void alsa_shutdown(void) -{ - snd_pcm_drain(handle); - snd_pcm_close(handle); - snd_config_update_free_global(); -} +/* Activate the afh receiver. */ +extern void afh_recv_init(struct receiver *r); +#undef AFH_RECEIVER +#define AFH_RECEIVER {.name = "afh", .init = afh_recv_init}, +DEFINE_RECEIVER_ARRAY; -/* - * start_time_in_future - check if current time is later than start_time - * \param diff pointer to write remaining time to - * - * If start_time was not given, or current time is later than given - * start_time, return 0. Otherwise, return 1 and write the time - * difference between current time and start_time to diff. diff may be - * NULL. - * - */ -static int start_time_in_future(struct timeval *diff) -{ - struct timeval now; +/* FIXME: This is needed by the amp filter. */ +char *stat_item_values[NUM_STAT_ITEMS] = {NULL}; - if (!conf.start_time_given) - return 0; - gettimeofday(&now, NULL); - return tv_diff(start_time, &now, diff) > 0? 1 : 0; -} +static int loglevel = LL_WARNING; +INIT_STDERR_LOGGING(loglevel); -/* - * do_initial_delay - sleep until time given at command line - * - * This is called if the initial buffer is filled. It returns - * immediately if no start_time was given at the command line - * or if the given start time is in the past. - * - */ -static void do_initial_delay(struct timeval *delay) +__noreturn static void print_help_and_die(void) { - do - para_select(1, NULL, NULL, delay); - while (start_time_in_future(delay)); + int d = conf.detailed_help_given; + const char **p = d? play_args_info_detailed_help + : play_args_info_help; + + printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-" + PLAY_CMDLINE_PARSER_VERSION); + printf_or_die("%s\n\n", play_args_info_usage); + for (; *p; p++) + printf_or_die("%s\n", *p); + print_filter_helps(d); + print_writer_helps(d); + exit(0); } -/* - * play_pcm - play raw pcm data - * \param loaded number of bytes already loaded - * - * If start_time was given, prebuffer data until buffer is full or - * start_time is reached. In any case, do not start playing before - * start_time. - */ -static void play_pcm(size_t loaded) +static void parse_config_or_die(int argc, char *argv[]) { - size_t chunk_bytes, bufsize, written = 0, prebuf_size; - ssize_t ret; - unsigned char *p; - struct timeval delay; - - alsa_init(); - chunk_bytes = chunk_size * bytes_per_frame; - bufsize = (conf.bufsize_arg * 1024 / chunk_bytes) * chunk_bytes; - audiobuf = realloc(audiobuf, bufsize); - if (!audiobuf) - EXIT(E_MEM); - prebuf_size = conf.prebuffer_arg * bufsize / 100; -again: - if (!written) { - if (loaded < prebuf_size) - goto read; - if (start_time && start_time_in_future(&delay)) { - do_initial_delay(&delay); - start_time = NULL; - } + int ret; + char *config_file; + struct play_cmdline_parser_params params = { + .override = 0, + .initialize = 1, + .check_required = 0, + .check_ambiguity = 0, + .print_errors = 1 + }; + + if (play_cmdline_parser_ext(argc, argv, &conf, ¶ms)) + exit(EXIT_FAILURE); + HANDLE_VERSION_FLAG("play", conf); + if (conf.help_given || conf.detailed_help_given) + print_help_and_die(); + loglevel = get_loglevel_by_name(conf.loglevel_arg); + if (conf.config_file_given) + config_file = para_strdup(conf.config_file_arg); + else { + char *home = para_homedir(); + config_file = make_message("%s/.paraslash/play.conf", home); + free(home); } - p = audiobuf; - while (loaded >= chunk_bytes) { - ret = alsa_write(p, chunk_size); - p += ret; - written += ret; - loaded -= ret; + ret = file_exists(config_file); + if (conf.config_file_given && !ret) { + PARA_EMERG_LOG("can not read config file %s\n", config_file); + goto err; } - if (loaded && p != audiobuf) - memmove(audiobuf, p, loaded); -read: - ret = read(STDIN_FILENO, audiobuf + loaded, bufsize - loaded); - if (ret < 0) - EXIT(E_READ); if (ret) { - loaded += ret; - goto again; + params.initialize = 0; + params.check_required = 1; + play_cmdline_parser_config_file(config_file, &conf, ¶ms); } - alsa_shutdown(); -} - -/* - * check_wave - test if audio buffer contains a valid wave header - * - * If not, return 0, otherwise, store number of channels and sample rate - * in struct conf and return WAV_HEADER_LEN. - */ -static size_t check_wave(void) -{ - unsigned char *a = audiobuf; - if (a[0] != 'R' || a[1] != 'I' || a[2] != 'F' || a[3] != 'F') - return WAV_HEADER_LEN; - conf.channels_arg = (unsigned) a[22]; - conf.sample_rate_arg = a[24] + (a[25] << 8) + (a[26] << 16) + (a[27] << 24); - return 0; + free(config_file); + return; +err: + free(config_file); + exit(EXIT_FAILURE); } int main(int argc, char *argv[]) { - struct timeval tv; + /* needed this early to make help work */ + recv_init(); + filter_init(); + writer_init(); - cmdline_parser(argc, argv, &conf); - if (conf.start_time_given) { - if (sscanf(conf.start_time_arg, "%lu:%lu", - &tv.tv_sec, &tv.tv_usec) != 2) - EXIT(E_SYNTAX); - start_time = &tv; - } - audiobuf = malloc(WAV_HEADER_LEN); - read_wav_header(); - play_pcm(check_wave()); - free(audiobuf); - return EXIT_SUCCESS; + parse_config_or_die(argc, argv); + return 0; }