Initial version of tinycompress

From git://git.alsa-project.org/tinycompress.git 0765f97a

Change-Id: I34599092e8c764ecb3475883d1d46cd9c9b5c439

1 files changed, 368 insertions, 0 deletions

diff --git a/cplay.c b/cplay.c
new file mode 100644
index 0000000..b11d676
--- /dev/null
+++ b/cplay.c
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+/*
+ * BSD LICENSE
+ *
+ * tinyplay command line player for compress audio offload in alsa
+ * Copyright (c) 2011-2012, Intel Corporation
+ * All rights reserved.
+ *
+ * Author: Vinod Koul <vinod.koul@linux.intel.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * Neither the name of Intel Corporation nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * LGPL LICENSE
+ *
+ * tinyplay command line player for compress audio offload in alsa
+ * Copyright (c) 2011-2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to
+ * the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdint.h>
+#include <linux/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <getopt.h>
+#include <sys/time.h>
+#define __force
+#define __bitwise
+#define __user
+#include <sound/compress_params.h>
+#include <tinycompress/tinycompress.h>
+#include <tinycompress/tinymp3.h>
+
+static int verbose;
+
+static void usage(void)
+{
+	fprintf(stderr, "usage: cplay [OPTIONS] filename\n"
+		"-c\tcard number\n"
+		"-d\tdevice node\n"
+		"-b\tbuffer size\n"
+		"-f\tfragments\n\n"
+		"-v\tverbose mode\n"
+		"-h\tPrints this help list\n\n"
+		"Example:\n"
+		"\tcplay -c 1 -d 2 test.mp3\n"
+		"\tcplay -f 5 test.mp3\n");
+
+	exit(EXIT_FAILURE);
+}
+
+void play_samples(char *name, unsigned int card, unsigned int device,
+		unsigned long buffer_size, unsigned int frag);
+
+struct mp3_header {
+	uint16_t sync;
+	uint8_t format1;
+	uint8_t format2;
+};
+
+int parse_mp3_header(struct mp3_header *header, unsigned int *num_channels,
+		unsigned int *sample_rate, unsigned int *bit_rate)
+{
+	int ver_idx, mp3_version, layer, bit_rate_idx, sample_rate_idx, channel_idx;
+
+	/* check sync bits */
+	if ((header->sync & MP3_SYNC) != MP3_SYNC) {
+		fprintf(stderr, "Error: Can't find sync word\n");
+		return -1;
+	}
+	ver_idx = (header->sync >> 11) & 0x03;
+	mp3_version = ver_idx == 0 ? MPEG25 : ((ver_idx & 0x1) ? MPEG1 : MPEG2);
+	layer = 4 - ((header->sync >> 9) & 0x03);
+	bit_rate_idx = ((header->format1 >> 4) & 0x0f);
+	sample_rate_idx = ((header->format1 >> 2) & 0x03);
+	channel_idx = ((header->format2 >> 6) & 0x03);
+
+	if (sample_rate_idx == 3 || layer == 4 || bit_rate_idx == 15) {
+		fprintf(stderr, "Error: Can't find valid header\n");
+		return -1;
+	}
+	*num_channels = (channel_idx == MONO ? 1 : 2);
+	*sample_rate = mp3_sample_rates[mp3_version][sample_rate_idx];
+	*bit_rate = (mp3_bit_rates[mp3_version][layer - 1][bit_rate_idx]) * 1000;
+	if (verbose)
+		printf("%s: exit\n", __func__);
+	return 0;
+}
+
+int check_codec_format_supported(unsigned int card, unsigned int device, struct snd_codec *codec)
+{
+	if (is_codec_supported(card, device, COMPRESS_IN, codec) == false) {
+		fprintf(stderr, "Error: This codec or format is not supported by DSP\n");
+		return -1;
+	}
+	return 0;
+}
+
+static int print_time(struct compress *compress)
+{
+	unsigned int avail;
+	struct timespec tstamp;
+
+	if (compress_get_hpointer(compress, &avail, &tstamp) != 0) {
+		fprintf(stderr, "Error querying timestamp\n");
+		fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
+		return -1;
+	} else
+		fprintf(stderr, "DSP played %jd.%jd\n", (intmax_t)tstamp.tv_sec, (intmax_t)tstamp.tv_nsec*1000);
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	char *file;
+	unsigned long buffer_size = 0;
+	int c;
+	unsigned int card = 0, device = 0, frag = 0;
+
+
+	if (argc < 2)
+		usage();
+
+	verbose = 0;
+	while ((c = getopt(argc, argv, "hvb:f:c:d:")) != -1) {
+		switch (c) {
+		case 'h':
+			usage();
+			break;
+		case 'b':
+			buffer_size = strtol(optarg, NULL, 0);
+			break;
+		case 'f':
+			frag = strtol(optarg, NULL, 10);
+			break;
+		case 'c':
+			card = strtol(optarg, NULL, 10);
+			break;
+		case 'd':
+			device = strtol(optarg, NULL, 10);
+			break;
+		case 'v':
+			verbose = 1;
+			break;
+		default:
+			exit(EXIT_FAILURE);
+		}
+	}
+	if (optind >= argc)
+		usage();
+
+	file = argv[optind];
+
+	play_samples(file, card, device, buffer_size, frag);
+
+	fprintf(stderr, "Finish Playing.... Close Normally\n");
+	exit(EXIT_SUCCESS);
+}
+
+void play_samples(char *name, unsigned int card, unsigned int device,
+		unsigned long buffer_size, unsigned int frag)
+{
+	struct compr_config config;
+	struct snd_codec codec;
+	struct compress *compress;
+	struct mp3_header header;
+	FILE *file;
+	char *buffer;
+	int size, num_read, wrote;
+	unsigned int channels, rate, bits;
+
+	if (verbose)
+		printf("%s: entry\n", __func__);
+	file = fopen(name, "rb");
+	if (!file) {
+		fprintf(stderr, "Unable to open file '%s'\n", name);
+		exit(EXIT_FAILURE);
+	}
+
+	fread(&header, sizeof(header), 1, file);
+
+	if (parse_mp3_header(&header, &channels, &rate, &bits) == -1) {
+		fclose(file);
+		exit(EXIT_FAILURE);
+	}
+
+	codec.id = SND_AUDIOCODEC_MP3;
+	codec.ch_in = channels;
+	codec.ch_out = channels;
+	switch (rate) {
+	case 5512:
+		codec.sample_rate = SNDRV_PCM_RATE_5512;
+		break;
+	case 8000:
+		codec.sample_rate = SNDRV_PCM_RATE_8000;
+		break;
+	case 11025:
+		codec.sample_rate = SNDRV_PCM_RATE_11025;
+		break;
+	case 16000:
+		codec.sample_rate = SNDRV_PCM_RATE_16000;
+		break;
+	case 220500:
+		codec.sample_rate = SNDRV_PCM_RATE_22050;
+		break;
+	case 32000:
+		codec.sample_rate = SNDRV_PCM_RATE_32000;
+		break;
+	case 44100:
+		codec.sample_rate = SNDRV_PCM_RATE_44100;
+		break;
+	case 48000:
+		codec.sample_rate = SNDRV_PCM_RATE_48000;
+		break;
+	case 64000:
+		codec.sample_rate = SNDRV_PCM_RATE_64000;
+		break;
+	case 88200:
+		codec.sample_rate = SNDRV_PCM_RATE_88200;
+		break;
+	case 96000:
+		codec.sample_rate = SNDRV_PCM_RATE_96000;
+		break;
+	case 176400:
+		codec.sample_rate = SNDRV_PCM_RATE_176400;
+		break;
+	case 192000:
+		codec.sample_rate = SNDRV_PCM_RATE_192000;
+		break;
+	default:
+		fprintf(stderr, "unknown sample rate %d\n", rate);
+		goto FILE_EXIT;
+	}
+	codec.bit_rate = bits;
+	codec.rate_control = 0;
+	codec.profile = 0;
+	codec.level = 0;
+	codec.ch_mode = 0;
+	codec.format = 0;
+	if ((buffer_size != 0) && (frag != 0)) {
+		config.fragment_size = buffer_size/frag;
+		config.fragments = frag;
+	} else {
+		/* use driver defaults */
+		config.fragment_size = 0;
+		config.fragments = 0;
+	}
+	config.codec = &codec;
+
+	compress = compress_open(card, device, COMPRESS_IN, &config);
+	if (!compress || !is_compress_ready(compress)) {
+		fprintf(stderr, "Unable to open Compress device %d:%d\n",
+				card, device);
+		fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
+		goto FILE_EXIT;
+	};
+	if (verbose)
+		printf("%s: Opened compress device\n", __func__);
+	size = config.fragment_size;
+	buffer = malloc(size * config.fragments);
+	if (!buffer) {
+		fprintf(stderr, "Unable to allocate %d bytes\n", size);
+		goto COMP_EXIT;
+	}
+
+	/* we will write frag fragment_size and then start */
+	num_read = fread(buffer, 1, size * config.fragments, file);
+	if (num_read > 0) {
+		if (verbose)
+			printf("%s: Doing first buffer write of %d\n", __func__, num_read);
+		wrote = compress_write(compress, buffer, num_read);
+		if (wrote < 0) {
+			fprintf(stderr, "Error %d playing sample\n", wrote);
+			fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
+			goto BUF_EXIT;
+		}
+		if (wrote != num_read) {
+			/* TODO: Buufer pointer needs to be set here */
+			fprintf(stderr, "We wrote %d, DSP accepted %d\n", num_read, wrote);
+		}
+	}
+	printf("Playing file %s On Card %u device %u, with buffer of %lu bytes\n",
+			name, card, device, buffer_size);
+	printf("Format %u Channels %u, %u Hz, Bit Rate %d\n",
+			SND_AUDIOCODEC_MP3, channels, rate, bits);
+
+	compress_start(compress);
+	if (verbose)
+		printf("%s: You should hear audio NOW!!!\n", __func__);
+
+	do {
+		num_read = fread(buffer, 1, size, file);
+		if (num_read > 0) {
+			wrote = compress_write(compress, buffer, num_read);
+			if (wrote < 0) {
+				fprintf(stderr, "Error playing sample\n");
+				fprintf(stderr, "ERR: %s\n", compress_get_error(compress));
+				goto BUF_EXIT;
+			}
+			if (wrote != num_read) {
+				/* TODO: Buufer pointer needs to be set here */
+				fprintf(stderr, "We wrote %d, DSP accepted %d\n", num_read, wrote);
+			}
+			if (verbose) {
+				print_time(compress);
+				printf("%s: wrote %d\n", __func__, wrote);
+			}
+		}
+	} while (num_read > 0);
+
+	if (verbose)
+		printf("%s: exit sucess\n", __func__);
+	/* issue drain if it supports */
+	compress_drain(compress);
+	free(buffer);
+	fclose(file);
+	compress_close(compress);
+	return;
+BUF_EXIT:
+	free(buffer);
+COMP_EXIT:
+	compress_close(compress);
+FILE_EXIT:
+	fclose(file);
+	if (verbose)
+		printf("%s: exit failure\n", __func__);
+	exit(EXIT_FAILURE);
+}
+