pulse: move pulse protocol to module

src/modules/module-protocol-pulse/format.c

@@ -0,0 +1,153 @@
+/* PipeWire
+ *
+ * Copyright © 2020 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+enum sample_format {
+	SAMPLE_U8,
+	SAMPLE_ALAW,
+	SAMPLE_ULAW,
+	SAMPLE_S16LE,
+	SAMPLE_S16BE,
+	SAMPLE_FLOAT32LE,
+	SAMPLE_FLOAT32BE,
+	SAMPLE_S32LE,
+	SAMPLE_S32BE,
+	SAMPLE_S24LE,
+	SAMPLE_S24BE,
+	SAMPLE_S24_32LE,
+	SAMPLE_S24_32BE,
+	SAMPLE_MAX,
+	SAMPLE_INVALID = -1
+};
+
+struct format {
+	uint32_t format;
+	const char *name;
+	uint32_t size;
+};
+
+static const struct format audio_formats[] = {
+	[SAMPLE_U8] = { SPA_AUDIO_FORMAT_U8, "u8", 1 },
+	[SAMPLE_ALAW] = { SPA_AUDIO_FORMAT_UNKNOWN, "alaw", 1 },
+	[SAMPLE_ULAW] = { SPA_AUDIO_FORMAT_UNKNOWN, "ulaw", 1 },
+	[SAMPLE_S16LE] = { SPA_AUDIO_FORMAT_S16_LE, "s16le", 2 },
+	[SAMPLE_S16BE] = { SPA_AUDIO_FORMAT_S16_BE, "s16be", 2 },
+	[SAMPLE_FLOAT32LE] = { SPA_AUDIO_FORMAT_F32_LE, "f32le", 4 },
+	[SAMPLE_FLOAT32BE] = { SPA_AUDIO_FORMAT_F32_BE, "f32be", 5 },
+	[SAMPLE_S32LE] = { SPA_AUDIO_FORMAT_S32_LE, "s32le", 4 },
+	[SAMPLE_S32BE] = { SPA_AUDIO_FORMAT_S32_BE, "s32be", 4 },
+	[SAMPLE_S24LE] = { SPA_AUDIO_FORMAT_S24_LE, "s24le", 3 },
+	[SAMPLE_S24BE] = { SPA_AUDIO_FORMAT_S24_BE, "s24be", 3 },
+	[SAMPLE_S24_32LE] = { SPA_AUDIO_FORMAT_S24_32_LE, "s24_32le", 4 },
+	[SAMPLE_S24_32BE] = { SPA_AUDIO_FORMAT_S24_32_BE, "s24_32be", 4 },
+};
+
+static inline uint32_t format_pa2id(enum sample_format format)
+{
+	if (format < 0 || (size_t)format >= SPA_N_ELEMENTS(audio_formats))
+		return SPA_AUDIO_FORMAT_UNKNOWN;
+	return audio_formats[format].format;
+}
+
+static inline enum sample_format format_id2pa(uint32_t id)
+{
+	size_t i;
+	for (i = 0; i < SPA_N_ELEMENTS(audio_formats); i++) {
+		if (id == audio_formats[i].format)
+			return i;
+	}
+	return SAMPLE_INVALID;
+}
+
+
+struct sample_spec {
+	enum sample_format format;
+	uint32_t rate;
+	uint8_t channels;
+};
+
+static inline uint32_t sample_spec_frame_size(const struct sample_spec *ss)
+{
+	if (ss->format < 0 || (size_t)ss->format >= SPA_N_ELEMENTS(audio_formats))
+		return SPA_AUDIO_FORMAT_UNKNOWN;
+	return audio_formats[ss->format].size * ss->channels;
+}
+
+#define CHANNELS_MAX	64
+
+struct channel_map {
+	uint8_t channels;
+	uint32_t map[CHANNELS_MAX];
+};
+
+struct cvolume {
+	uint8_t channels;
+	float values[CHANNELS_MAX];
+};
+
+enum encoding {
+	ENCODING_ANY,
+	ENCODING_PCM,
+	ENCODING_AC3_IEC61937,
+	ENCODING_EAC3_IEC61937,
+	ENCODING_MPEG_IEC61937,
+	ENCODING_DTS_IEC61937,
+	ENCODING_MPEG2_AAC_IEC61937,
+	ENCODING_TRUEHD_IEC61937,
+	ENCODING_DTSHD_IEC61937,
+	ENCODING_MAX,
+	NCODING_INVALID = -1,
+};
+
+struct format_info {
+	enum encoding encoding;
+	struct pw_properties *props;
+};
+
+static int format_parse_param(const struct spa_pod *param, struct sample_spec *ss, struct channel_map *map)
+{
+	struct spa_audio_info info = { 0 };
+//	uint32_t i;
+
+        spa_format_parse(param, &info.media_type, &info.media_subtype);
+
+	if (info.media_type != SPA_MEDIA_TYPE_audio ||
+	    info.media_subtype != SPA_MEDIA_SUBTYPE_raw ||
+	    spa_format_audio_raw_parse(param, &info.info.raw) < 0 ||
+	    !SPA_AUDIO_FORMAT_IS_INTERLEAVED(info.info.raw.format)) {
+                return -ENOTSUP;
+        }
+
+        ss->format = format_id2pa(info.info.raw.format);
+        if (ss->format == SAMPLE_INVALID)
+                return -ENOTSUP;
+
+        ss->rate = info.info.raw.rate;
+        ss->channels = info.info.raw.channels;
+
+	map->channels = info.info.raw.channels;
+//	for (i = 0; i < map->channels; i++)
+//		map->map[i] = info.info.raw.position[i];
+
+	return 0;
+}