Re: [alsa-devel] [PATCH 2/2] cplay: add option to specify codec ID

On Tue, Jan 23, 2018 at 11:33:12AM +0900, Katsuhiro Suzuki wrote:

This patch adds a -I command line option to set the codec ID, same as crecord.

But then you are adding iec support too and moving mp3 support around to fir better, so that part can be separate patches. Otherwise change lgtm

Signed-off-by: Katsuhiro Suzuki suzuki.katsuhiro@socionext.com

src/utils/cplay.c | 174 +++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 139 insertions(+), 35 deletions(-)

diff --git a/src/utils/cplay.c b/src/utils/cplay.c index bc95f0d..a716f5e 100644 --- a/src/utils/cplay.c +++ b/src/utils/cplay.c @@ -74,25 +74,75 @@ #include "tinycompress/tinymp3.h"

static int verbose; +static const unsigned int DEFAULT_CODEC_ID = SND_AUDIOCODEC_PCM;

+static const struct {

• const char *name;
• unsigned int id;

+} codec_ids[] = {

• { "PCM", SND_AUDIOCODEC_PCM },
• { "MP3", SND_AUDIOCODEC_MP3 },
• { "AMR", SND_AUDIOCODEC_AMR },
• { "AMRWB", SND_AUDIOCODEC_AMRWB },
• { "AMRWBPLUS", SND_AUDIOCODEC_AMRWBPLUS },
• { "AAC", SND_AUDIOCODEC_AAC },
• { "WMA", SND_AUDIOCODEC_WMA },
• { "REAL", SND_AUDIOCODEC_REAL },
• { "VORBIS", SND_AUDIOCODEC_VORBIS },
• { "FLAC", SND_AUDIOCODEC_FLAC },
• { "IEC61937", SND_AUDIOCODEC_IEC61937 },
• { "G723_1", SND_AUDIOCODEC_G723_1 },
• { "G729", SND_AUDIOCODEC_G729 },

+/* BESPOKE isn't defined on older kernels */ +#ifdef SND_AUDIOCODEC_BESPOKE

• { "BESPOKE", SND_AUDIOCODEC_BESPOKE },

+#endif +}; +#define CPLAY_NUM_CODEC_IDS (sizeof(codec_ids) / sizeof(codec_ids[0]))

+static const char *codec_name_from_id(unsigned int id) +{

• static char hexname[12];
• int i;
• for (i = 0; i < CPLAY_NUM_CODEC_IDS; ++i) {

• if (codec_ids[i].id == id)
  

• 	return codec_ids[i].name;
  

• }
• snprintf(hexname, sizeof(hexname), "0x%x", id);
• return hexname; /* a static is safe because we're single-threaded */

+}

static void usage(void) {

• int i;
• fprintf(stderr, "usage: cplay [OPTIONS] filename\n" "-c\tcard number\n" "-d\tdevice node\n"

• "-I\tspecify codec ID (default is mp3)\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");
  

• "\tcplay -f 5 test.mp3\n\n"
  

• "Valid codec IDs:\n");
  

• for (i = 0; i < CPLAY_NUM_CODEC_IDS; ++i)

• fprintf(stderr, "%s%c", codec_ids[i].name,
  

• 	((i + 1) % 8) ? ' ' : '\n');
  

• fprintf(stderr, "\nor the value in decimal or hex\n");

  exit(EXIT_FAILURE);

}

void play_samples(char *name, unsigned int card, unsigned int device,

• unsigned long buffer_size, unsigned int frag);
  

• unsigned long buffer_size, unsigned int frag,
  

• unsigned long codec_id);
  
  

struct mp3_header { uint16_t sync; @@ -156,15 +206,15 @@ int main(int argc, char **argv) { char *file; unsigned long buffer_size = 0;

• int c;

• int c, i; unsigned int card = 0, device = 0, frag = 0;

• unsigned int codec_id = SND_AUDIOCODEC_MP3;

  if (argc < 2) usage();

  verbose = 0;

• while ((c = getopt(argc, argv, "hvb:f:c:d:")) != -1) {

• while ((c = getopt(argc, argv, "hvb:f:c:d:I:")) != -1) { switch (c) { case 'h': usage();

@@ -181,6 +231,25 @@ int main(int argc, char **argv) case 'd': device = strtol(optarg, NULL, 10); break;

• case 'I':
  

• 	if (optarg[0] == '0') {
  

• 		codec_id = strtol(optarg, NULL, 0);
  

• 	} else {
  

• 		for (i = 0; i < CPLAY_NUM_CODEC_IDS; ++i) {
  

• 			if (strcmp(optarg,
  

• 				   codec_ids[i].name) == 0) {
  

• 				codec_id = codec_ids[i].id;
  

• 				break;
  

• 			}
  

• 		}
  

• 		if (i == CPLAY_NUM_CODEC_IDS) {
  

• 			fprintf(stderr, "Unrecognised ID: %s\n",
  

• 				optarg);
  

• 			usage();
  

• 		}
  

• 	}
  

• 	break;
  

  case 'v': verbose = 1; break;

@@ -193,24 +262,74 @@ int main(int argc, char **argv)

file = argv[optind];

• play_samples(file, card, device, buffer_size, frag);

• play_samples(file, card, device, buffer_size, frag, codec_id);

  fprintf(stderr, "Finish Playing.... Close Normally\n"); exit(EXIT_SUCCESS);

}

+void get_codec_mp3(FILE *file, struct compr_config *config,

• struct snd_codec *codec)
  

+{

• size_t read;
• struct mp3_header header;
• unsigned int channels, rate, bits;
• read = fread(&header, sizeof(header), 1, file);
• if (read != 1) {

• fprintf(stderr, "Unable to read header \n");
  

• fclose(file);
  

• exit(EXIT_FAILURE);
  

• }
• 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;
• codec->sample_rate = rate;
• if (!codec->sample_rate) {

• fprintf(stderr, "invalid sample rate %d\n", rate);
  

• fclose(file);
  

• exit(EXIT_FAILURE);
  

• }
• codec->bit_rate = bits;
• codec->rate_control = 0;
• codec->profile = 0;
• codec->level = 0;
• codec->ch_mode = 0;
• codec->format = 0;

+}

+int get_codec_iec(FILE *file, struct compr_config *config,

• struct snd_codec *codec)
  

+{

• codec->id = SND_AUDIOCODEC_IEC61937;
• /* FIXME: cannot get accurate ch_in, any channels may be accepted */
• codec->ch_in = 2;
• codec->ch_out = 2;
• codec->sample_rate = 0;
• codec->bit_rate = 0;
• codec->rate_control = 0;
• codec->profile = SND_AUDIOPROFILE_IEC61937_SPDIF;
• codec->level = 0;
• codec->ch_mode = 0;
• codec->format = 0;

+}

void play_samples(char *name, unsigned int card, unsigned int device,

• unsigned long buffer_size, unsigned int frag)
  

• unsigned long buffer_size, unsigned int frag,
  

• unsigned long codec_id)
  

{ 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;

• size_t read;

  if (verbose) printf("%s: entry\n", __func__);

@@ -220,33 +339,18 @@ void play_samples(char *name, unsigned int card, unsigned int device, exit(EXIT_FAILURE); }

• read = fread(&header, 1, sizeof(header), file);
• if (read != sizeof(header)) {

• fprintf(stderr, "Unable to read header \n");
  

• fclose(file);
  

• switch (codec_id) {
• case SND_AUDIOCODEC_MP3:

• get_codec_mp3(file, &config, &codec);
  

• break;
  

• case SND_AUDIOCODEC_IEC61937:

• get_codec_iec(file, &config, &codec);
  

• break;
  

• default:

• fprintf(stderr, "codec ID %d is not supported\n", codec_id);
  

  exit(EXIT_FAILURE); }

• 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;
• codec.sample_rate = rate;
• if (!codec.sample_rate) {

• fprintf(stderr, "invalid sample rate %d\n", rate);
  

• fclose(file);
  

• exit(EXIT_FAILURE);
  

• }
• 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;

@@ -292,7 +396,7 @@ void play_samples(char *name, unsigned int card, unsigned int device, 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);
  

• 	codec.id, codec.ch_in, codec.sample_rate, codec.bit_rate);
  
  

  compress_start(compress); if (verbose)

-- 2.15.0