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- Switch madplay to the new API. This is done thanks to a patch written
- by Micha Nelissen <micha@neli.hopto.org> and available at
- http://article.gmane.org/gmane.comp.audio.mad.devel/729.
-
- --- madplay-0.15.2b/audio_alsa.c 2008-10-18 15:10:16.000000000 +0200
- +++ madplay-0.15.2b/audio_alsa.c.new 2008-10-18 15:03:27.000000000 +0200
- @@ -28,31 +28,30 @@
-
- #include <errno.h>
-
- -#define ALSA_PCM_OLD_HW_PARAMS_API
- -#define ALSA_PCM_OLD_SW_PARAMS_API
- #include <alsa/asoundlib.h>
-
- #include <mad.h>
-
- #include "audio.h"
-
- -char *buf = NULL;
- -int paused = 0;
- +#define BUFFER_TIME_MAX 500000
-
- -int rate = -1;
- -int channels = -1;
- -int bitdepth = -1;
- -int sample_size = -1;
- -
- -int buffer_time = 500000;
- -int period_time = 100000;
- -char *defaultdev = "plughw:0,0";
- +unsigned char *buf = NULL;
- +int paused = 0;
- +
- +unsigned int rate = 0;
- +unsigned int channels = -1;
- +unsigned int bitdepth = -1;
- +unsigned int sample_size = -1;
- +
- +unsigned int buffer_time;
- +unsigned int period_time;
- +char *defaultdev = "plughw:0,0";
-
- snd_pcm_hw_params_t *alsa_hwparams;
- snd_pcm_sw_params_t *alsa_swparams;
-
- -snd_pcm_sframes_t buffer_size;
- -snd_pcm_sframes_t period_size;
- +snd_pcm_uframes_t buffer_size;
-
- snd_pcm_format_t alsa_format = -1;
- snd_pcm_access_t alsa_access = SND_PCM_ACCESS_MMAP_INTERLEAVED;
- @@ -66,14 +65,20 @@
- snd_pcm_hw_params_t *params,
- snd_pcm_access_t access)
- {
- - int err, dir;
- -
- + int err;
- +
- /* choose all parameters */
- err = snd_pcm_hw_params_any(handle,params);
- if (err < 0) {
- printf("Access type not available for playback: %s\n", snd_strerror(err));
- return err;
- }
- + /* set the access type */
- + err = snd_pcm_hw_params_set_access(handle, params, alsa_access);
- + if (err < 0) {
- + printf("Sample format not available for playback: %s\n", snd_strerror(err));
- + return err;
- + }
- /* set the sample format */
- err = snd_pcm_hw_params_set_format(handle, params, alsa_format);
- if (err < 0) {
- @@ -87,29 +92,38 @@
- return err;
- }
- /* set the stream rate */
- - err = snd_pcm_hw_params_set_rate_near(handle, params, rate, 0);
- + err = snd_pcm_hw_params_set_rate(handle, params, rate, 0);
- if (err < 0) {
- printf("Rate %iHz not available for playback: %s\n", rate, snd_strerror(err));
- return err;
- }
- - if (err != rate) {
- - printf("Rate doesn't match (requested %iHz, get %iHz)\n", rate, err);
- - return -EINVAL;
- - }
- + err = snd_pcm_hw_params_get_buffer_time_max(params, &buffer_time, NULL);
- + if (err < 0) {
- + printf("Unable to retrieve buffer time: %s\n", snd_strerror(err));
- + return err;
- + }
- + if (buffer_time > BUFFER_TIME_MAX)
- + buffer_time = BUFFER_TIME_MAX;
- /* set buffer time */
- - err = snd_pcm_hw_params_set_buffer_time_near(handle, params, buffer_time, &dir);
- + err = snd_pcm_hw_params_set_buffer_time_near(handle, params, &buffer_time, 0);
- if (err < 0) {
- printf("Unable to set buffer time %i for playback: %s\n", buffer_time, snd_strerror(err));
- return err;
- }
- - buffer_size = snd_pcm_hw_params_get_buffer_size(params);
- + if (period_time * 4 > buffer_time)
- + period_time = buffer_time / 4;
- /* set period time */
- - err = snd_pcm_hw_params_set_period_time_near(handle, params, period_time, &dir);
- + err = snd_pcm_hw_params_set_period_time_near(handle, params, &period_time, NULL);
- if (err < 0) {
- printf("Unable to set period time %i for playback: %s\n", period_time, snd_strerror(err));
- return err;
- }
- - period_size = snd_pcm_hw_params_get_period_size(params, &dir);
- + /* retrieve buffer size */
- + err = snd_pcm_hw_params_get_buffer_size(params, &buffer_size);
- + if (err < 0) {
- + printf("Unable to retrieve buffer size: %s\n", snd_strerror(err));
- + return err;
- + }
- /* write the parameters to device */
- err = snd_pcm_hw_params(handle, params);
- if (err < 0) {
- @@ -123,6 +137,7 @@
- int set_swparams(snd_pcm_t *handle,
- snd_pcm_sw_params_t *params)
- {
- + unsigned int start_threshold;
- int err;
-
- /* get current swparams */
- @@ -136,13 +151,7 @@
- if (err < 0) {
- printf("Unable to set start threshold mode for playback: %s\n", snd_strerror(err));
- return err;
- - }
- - /* allow transfer when at least period_size samples can be processed */
- - err = snd_pcm_sw_params_set_avail_min(handle, params, period_size);
- - if (err < 0) {
- - printf("Unable to set avail min for playback: %s\n", snd_strerror(err));
- - return err;
- - }
- + }
- /* align all transfers to 1 samples */
- err = snd_pcm_sw_params_set_xfer_align(handle, params, 1);
- if (err < 0) {
- @@ -190,7 +199,7 @@
- rate = config->speed;
-
- if ( bitdepth == 0 )
- - config->precision = bitdepth = 32;
- + config->precision = bitdepth = 16;
-
- switch (bitdepth)
- {
- @@ -241,7 +250,7 @@
- return -1;
- }
-
- - buf = malloc(buffer_size);
- + buf = malloc(buffer_size * sample_size);
- if (buf == NULL) {
- audio_error="unable to allocate output buffer table";
- return -1;
- @@ -279,7 +288,7 @@
- int play(struct audio_play *play)
- {
- int err, len;
- - char *ptr;
- + unsigned char *ptr;
-
- ptr = buf;
- len = play->nsamples;
-
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