diff options
Diffstat (limited to 'src/audio_parser.c')
| -rw-r--r-- | src/audio_parser.c | 164 |
1 files changed, 131 insertions, 33 deletions
diff --git a/src/audio_parser.c b/src/audio_parser.c index 906b0f819..039ffa1ab 100644 --- a/src/audio_parser.c +++ b/src/audio_parser.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2009 The Music Player Daemon Project + * Copyright (C) 2003-2010 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify @@ -22,9 +22,13 @@ * */ +#include "config.h" #include "audio_parser.h" #include "audio_format.h" +#include "audio_check.h" +#include <assert.h> +#include <string.h> #include <stdlib.h> /** @@ -36,64 +40,158 @@ audio_parser_quark(void) return g_quark_from_static_string("audio_parser"); } -bool -audio_format_parse(struct audio_format *dest, const char *src, GError **error) +static bool +parse_sample_rate(const char *src, bool mask, uint32_t *sample_rate_r, + const char **endptr_r, GError **error_r) { - char *endptr; unsigned long value; + char *endptr; - audio_format_clear(dest); - - /* parse sample rate */ + if (mask && *src == '*') { + *sample_rate_r = 0; + *endptr_r = src + 1; + return true; + } value = strtoul(src, &endptr, 10); if (endptr == src) { - g_set_error(error, audio_parser_quark(), 0, - "Sample rate missing"); + g_set_error(error_r, audio_parser_quark(), 0, + "Failed to parse the sample rate"); return false; - } else if (*endptr != ':') { - g_set_error(error, audio_parser_quark(), 0, - "Sample format missing"); + } else if (!audio_check_sample_rate(value, error_r)) + return false; + + *sample_rate_r = value; + *endptr_r = endptr; + return true; +} + +static bool +parse_sample_format(const char *src, bool mask, + enum sample_format *sample_format_r, + const char **endptr_r, GError **error_r) +{ + unsigned long value; + char *endptr; + enum sample_format sample_format; + + if (mask && *src == '*') { + *sample_format_r = SAMPLE_FORMAT_UNDEFINED; + *endptr_r = src + 1; + return true; + } + + value = strtoul(src, &endptr, 10); + if (endptr == src) { + g_set_error(error_r, audio_parser_quark(), 0, + "Failed to parse the sample format"); return false; - } else if (!audio_valid_sample_rate(value)) { - g_set_error(error, audio_parser_quark(), 0, - "Invalid sample rate: %lu", value); + } + + switch (value) { + case 8: + sample_format = SAMPLE_FORMAT_S8; + break; + + case 16: + sample_format = SAMPLE_FORMAT_S16; + break; + + case 24: + if (memcmp(endptr, "_3", 2) == 0) { + sample_format = SAMPLE_FORMAT_S24; + endptr += 2; + } else + sample_format = SAMPLE_FORMAT_S24_P32; + break; + + case 32: + sample_format = SAMPLE_FORMAT_S32; + break; + + default: + g_set_error(error_r, audio_parser_quark(), 0, + "Invalid sample format: %lu", value); return false; } - dest->sample_rate = value; + assert(audio_valid_sample_format(sample_format)); - /* parse sample format */ + *sample_format_r = sample_format; + *endptr_r = endptr; + return true; +} + +static bool +parse_channel_count(const char *src, bool mask, uint8_t *channels_r, + const char **endptr_r, GError **error_r) +{ + unsigned long value; + char *endptr; + + if (mask && *src == '*') { + *channels_r = 0; + *endptr_r = src + 1; + return true; + } - src = endptr + 1; value = strtoul(src, &endptr, 10); if (endptr == src) { - g_set_error(error, audio_parser_quark(), 0, - "Sample format missing"); + g_set_error(error_r, audio_parser_quark(), 0, + "Failed to parse the channel count"); return false; - } else if (*endptr != ':') { - g_set_error(error, audio_parser_quark(), 0, - "Channel count missing"); + } else if (!audio_check_channel_count(value, error_r)) return false; - } else if (!audio_valid_sample_format(value)) { - g_set_error(error, audio_parser_quark(), 0, - "Invalid sample format: %lu", value); + + *channels_r = value; + *endptr_r = endptr; + return true; +} + +bool +audio_format_parse(struct audio_format *dest, const char *src, + bool mask, GError **error_r) +{ + uint32_t rate; + enum sample_format sample_format; + uint8_t channels; + + audio_format_clear(dest); + + /* parse sample rate */ + + if (!parse_sample_rate(src, mask, &rate, &src, error_r)) + return false; + + if (*src++ != ':') { + g_set_error(error_r, audio_parser_quark(), 0, + "Sample format missing"); return false; } - dest->bits = value; + /* parse sample format */ + + if (!parse_sample_format(src, mask, &sample_format, &src, error_r)) + return false; + + if (*src++ != ':') { + g_set_error(error_r, audio_parser_quark(), 0, + "Channel count missing"); + return false; + } /* parse channel count */ - src = endptr + 1; - value = strtoul(src, &endptr, 10); - if (*endptr != 0 || !audio_valid_channel_count(value)) { - g_set_error(error, audio_parser_quark(), 0, - "Invalid channel count: %s", src); + if (!parse_channel_count(src, mask, &channels, &src, error_r)) + return false; + + if (*src != 0) { + g_set_error(error_r, audio_parser_quark(), 0, + "Extra data after channel count: %s", src); return false; } - dest->channels = value; + audio_format_init(dest, rate, sample_format, channels); return true; } |