This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
+ it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
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
+ You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
PA_SAMPLE_S16BE, /**< Signed 16 Bit PCM, big endian */
PA_SAMPLE_FLOAT32LE, /**< 32 Bit IEEE floating point, little endian, range -1..1 */
PA_SAMPLE_FLOAT32BE, /**< 32 Bit IEEE floating point, big endian, range -1..1 */
- PA_SAMPLE_MAX /**< Upper limit of valid sample types */
+ PA_SAMPLE_MAX, /**< Upper limit of valid sample types */
+ PA_SAMPLE_INVALID = -1 /**< An invalid value */
};
#ifdef WORDS_BIGENDIAN
uint8_t channels; /**< Audio channels. (1 for mono, 2 for stereo, ...) */
};
-/** Type for usec specifications */
-typedef uint32_t pa_usec_t;
+/** Type for usec specifications (unsigned). May be either 32 or 64 bit, depending on the architecture */
+typedef uint64_t pa_usec_t;
-/** Return the amount of bytes playback of a second of audio with the speicified sample type takes */
+/** Return the amount of bytes playback of a second of audio with the specified sample type takes */
size_t pa_bytes_per_second(const struct pa_sample_spec *spec);
/** Return the size of a frame with the specific sample type */
size_t pa_frame_size(const struct pa_sample_spec *spec);
/** Calculate the time the specified bytes take to play with the specified sample type */
-pa_usec_t pa_bytes_to_usec(size_t length, const struct pa_sample_spec *spec);
+pa_usec_t pa_bytes_to_usec(uint64_t length, const struct pa_sample_spec *spec);
/** Return non-zero when the sample type specification is valid */
int pa_sample_spec_valid(const struct pa_sample_spec *spec);
int pa_sample_spec_equal(const struct pa_sample_spec*a, const struct pa_sample_spec*b);
/** Maximum required string length for pa_sample_spec_snprint() */
-#define PA_SAMPLE_SNPRINT_MAX_LENGTH 32
+#define PA_SAMPLE_SPEC_SNPRINT_MAX 32
/** Pretty print a sample type specification to a string */
void pa_sample_spec_snprint(char *s, size_t l, const struct pa_sample_spec *spec);
/** Convert volume from linear level to decibel. \since 0.4 */
double pa_volume_to_dB(pa_volume_t v);
+/** Convert volume to scaled value understandable by the user (between 0 and 1). \since 0.6 */
+double pa_volume_to_user(pa_volume_t v);
+
+/** Convert user volume to polypaudio volume. \since 0.6 */
+pa_volume_t pa_volume_from_user(double v);
+
#ifdef INFINITY
#define PA_DECIBEL_MININFTY (-INFINITY)
#else
#define PA_DECIBEL_MININFTY (-200)
#endif
+/** Pretty print a byte size value. (i.e. "2.5 MB") */
+void pa_bytes_snprint(char *s, size_t l, unsigned v);
+
+/** Parse a sample format text */
+enum pa_sample_format pa_parse_sample_format(const char *format);
+
PA_C_DECL_END
#endif