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Revise the PCM callback system after adding multichannel audio. 

Additional status callback is added to pcm_play/rec_data instead of
using a special function to set it. Status includes DMA error
reporting to the status callback. Playback and recording callback
become more alike except playback uses "const void **addr" (because
the data should not be altered) and recording  uses "void **addr".
"const" is put in place throughout where appropriate.

Most changes are fairly trivial. One that should be checked in
particular because it isn't so much is telechips, if anyone cares to
bother. PP5002 is not so trivial either but that tested as working.

Change-Id: I4928d69b3b3be7fb93e259f81635232df9bd1df2
Reviewed-on: http://gerrit.rockbox.org/166
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested-by: Michael Sevakis <jethead71@rockbox.org>
This commit is contained in:
Michael Sevakis 2012-02-23 08:14:46 -05:00
parent 3f82f3aca1
commit 286a4c5caa
48 changed files with 799 additions and 752 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
apps/beep.c
View File

@ -46,7 +46,7 @@ static int16_t beep_buf[BEEP_BUF_COUNT*2] IBSS_ATTR __attribute__((aligned(4)));
/* Callback to generate the beep frames - also don't want inlining of
call below in beep_play */
static void __attribute__((noinline))
beep_get_more(unsigned char **start, size_t *size)
beep_get_more(const void **start, size_t *size)
{
int count = beep_count;
@ -87,7 +87,7 @@ void beep_play(unsigned int frequency, unsigned int duration,
#endif
/* If it fits - avoid cb overhead */
unsigned char *start;
const void *start;
size_t size;
/* Generate first frame here */

2
apps/pcmbuf.c
View File

@ -694,7 +694,7 @@ void pcmbuf_start_track_change(enum pcm_track_change_type type)
/** Playback */
/* PCM driver callback */
static void pcmbuf_pcm_callback(unsigned char **start, size_t *size)
static void pcmbuf_pcm_callback(const void **start, size_t *size)
{
/*- Process the chunk that just finished -*/
size_t index = chunk_ridx;

13
apps/plugin.h
View File

@ -153,12 +153,12 @@ void* plugin_get_buffer(size_t *buffer_size);
#define PLUGIN_MAGIC 0x526F634B /* RocK */
/* increase this every time the api struct changes */
#define PLUGIN_API_VERSION 216
#define PLUGIN_API_VERSION 217
/* update this to latest version if a change to the api struct breaks
backwards compatibility (and please take the opportunity to sort in any
new function which are "waiting" at the end of the function table) */
#define PLUGIN_MIN_API_VERSION 216
#define PLUGIN_MIN_API_VERSION 217
/* plugin return codes */
/* internal returns start at 0x100 to make exit(1..255) work */
@ -651,7 +651,8 @@ struct plugin_api {
const unsigned long *hw_freq_sampr;
void (*pcm_apply_settings)(void);
void (*pcm_play_data)(pcm_play_callback_type get_more,
unsigned char* start, size_t size);
pcm_status_callback_type status_cb,
const void *start, size_t size);
void (*pcm_play_stop)(void);
void (*pcm_set_frequency)(unsigned int frequency);
bool (*pcm_is_playing)(void);
@ -669,6 +670,7 @@ struct plugin_api {
void (*pcm_init_recording)(void);
void (*pcm_close_recording)(void);
void (*pcm_record_data)(pcm_rec_callback_type more_ready,
pcm_status_callback_type status_cb,
void *start, size_t size);
void (*pcm_stop_recording)(void);
void (*pcm_calculate_rec_peaks)(int *left, int *right);
@ -689,12 +691,13 @@ struct plugin_api {
int (*dsp_output_count)(struct dsp_config *dsp, int count);
enum channel_status (*mixer_channel_status)(enum pcm_mixer_channel channel);
void * (*mixer_channel_get_buffer)(enum pcm_mixer_channel channel, int *count);
const void * (*mixer_channel_get_buffer)(enum pcm_mixer_channel channel,
int *count);
void (*mixer_channel_calculate_peaks)(enum pcm_mixer_channel channel,
int *left, int *right);
void (*mixer_channel_play_data)(enum pcm_mixer_channel channel,
pcm_play_callback_type get_more,
unsigned char *start, size_t size);
const void *start, size_t size);
void (*mixer_channel_play_pause)(enum pcm_mixer_channel channel, bool play);
void (*mixer_channel_stop)(enum pcm_mixer_channel channel);
void (*mixer_channel_set_amplitude)(enum pcm_mixer_channel channel,

8
apps/plugins/beatbox/beatbox.c
View File

@ -509,7 +509,7 @@ void redrawScreen(unsigned char force)
rb->lcd_update();
}
void get_more(unsigned char** start, size_t* size)
void get_more(const void** start, size_t* size)
{
#ifndef SYNC
if(lastswap!=swap)
@ -523,10 +523,10 @@ void get_more(unsigned char** start, size_t* size)
*size = BUF_SIZE*sizeof(short);
#ifndef SYNC
*start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
*start = swap ? gmbuf : gmbuf + BUF_SIZE;
swap=!swap;
#else
*start = (unsigned char*)(gmbuf);
*start = gmbuf;
#endif
}
@ -537,7 +537,7 @@ int beatboxmain()
numberOfSamples=44100/10;
synthbuf();
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
rb->lcd_set_background(0x000000);
rb->lcd_clear_display();

6
apps/plugins/doom/i_sound.c
View File

@ -457,11 +457,11 @@ void I_UpdateSound( void )
// only output be done asynchronous?
//
void get_more(unsigned char** start, size_t* size)
void get_more(const void** start, size_t* size)
{
I_UpdateSound(); // Force sound update
*start = (unsigned char*)(mixbuffer);
*start = mixbuffer;
*size = SAMPLECOUNT*2*sizeof(short);
}
@ -471,7 +471,7 @@ void I_SubmitSound(void)
if (!enable_sound)
return;
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
}
void I_ShutdownSound(void)

4
apps/plugins/fft/fft.c
View File

@ -1186,8 +1186,8 @@ static inline bool fft_init_fft_lib(void)
static inline bool fft_get_fft(void)
{
int count;
int16_t *value =
(int16_t *) rb->mixer_channel_get_buffer(PCM_MIXER_CHAN_PLAYBACK, &count);
const int16_t *value =
rb->mixer_channel_get_buffer(PCM_MIXER_CHAN_PLAYBACK, &count);
/* This block can introduce discontinuities in our data. Meaning, the
* FFT will not be done a continuous segment of the signal. Which can
* be bad. Or not.

2
apps/plugins/metronome.c
View File

@ -721,7 +721,7 @@ static void prepare_tock(void)
static void play_tock(void)
{
rb->pcm_play_data(NULL,(unsigned char *)sndbuf,sizeof(sndbuf));
rb->pcm_play_data(NULL, NULL, sndbuf, sizeof(sndbuf));
}
#endif /* CONFIG_CODEC != SWCODEC */

14
apps/plugins/midi/midiplay.c
View File

@ -319,7 +319,7 @@ static inline void synthbuf(void)
samples_in_buf = BUF_SIZE-i;
}
static void get_more(unsigned char** start, size_t* size)
static void get_more(const void** start, size_t* size)
{
#ifndef SYNC
if(lastswap != swap)
@ -333,10 +333,10 @@ static void get_more(unsigned char** start, size_t* size)
*size = samples_in_buf*sizeof(int32_t);
#ifndef SYNC
*start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
*start = swap ? gmbuf : gmbuf + BUF_SIZE;
swap = !swap;
#else
*start = (unsigned char*)(gmbuf);
*start = gmbuf;
#endif
}
@ -396,7 +396,7 @@ static int midimain(const void * filename)
samples_this_second = 0;
synthbuf();
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
while (!quit)
{
@ -445,7 +445,7 @@ static int midimain(const void * filename)
seekBackward(5);
midi_debug("Rewind to %d:%02d\n", playing_time/60, playing_time%60);
if (is_playing)
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
break;
}
@ -455,7 +455,7 @@ static int midimain(const void * filename)
seekForward(5);
midi_debug("Skip to %d:%02d\n", playing_time/60, playing_time%60);
if (is_playing)
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
break;
}
@ -470,7 +470,7 @@ static int midimain(const void * filename)
{
midi_debug("Playing from %d:%02d\n", playing_time/60, playing_time%60);
is_playing = true;
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
}
break;
}

10
apps/plugins/mikmod/mikmod.c
View File

@ -268,7 +268,7 @@ static inline void synthbuf(void)
VC_WriteBytes(outptr, BUF_SIZE);
}
void get_more(unsigned char** start, size_t* size)
void get_more(const void** start, size_t* size)
{
#ifndef SYNC
if (lastswap != swap)
@ -282,10 +282,10 @@ void get_more(unsigned char** start, size_t* size)
*size = BUF_SIZE;
#ifndef SYNC
*start = (unsigned char*)((swap ? gmbuf : gmbuf + BUF_SIZE));
*start = swap ? gmbuf : gmbuf + BUF_SIZE;
swap = !swap;
#else
*start = (unsigned char*)(gmbuf);
*start = gmbuf;
#endif
}
@ -660,7 +660,7 @@ int playfile(char* filename)
{
display = DISPLAY_INFO;
Player_Start(module);
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
}
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
@ -804,7 +804,7 @@ int playfile(char* filename)
}
else
{
rb->pcm_play_data(&get_more, NULL, 0);
rb->pcm_play_data(&get_more, NULL, NULL, 0);
}
Player_TogglePause();
break;

2
apps/plugins/mpegplayer/pcm_output.c
View File

@ -85,7 +85,7 @@ static inline ssize_t pcm_output_bytes_free(void)
}
/* Audio DMA handler */
static void get_more(unsigned char **start, size_t *size)
static void get_more(const void **start, size_t *size)
{
ssize_t sz;

6
apps/plugins/pacbox/pacbox.c
View File

@ -286,7 +286,7 @@ static int16_t raw_buf[NBSAMPLES] IBSS_ATTR;
/*
Audio callback
*/
static void get_more(unsigned char **start, size_t *size)
static void get_more(const void **start, size_t *size)
{
int32_t *out, *outend;
int16_t *raw;
@ -306,7 +306,7 @@ static void get_more(unsigned char **start, size_t *size)
}
while (out < outend);
*start = (unsigned char *)sound_buf;
*start = sound_buf;
*size = NBSAMPLES*sizeof(sound_buf[0]);
}
@ -339,7 +339,7 @@ static void start_sound(void)
wsg3_set_sampling_rate(rb->hw_freq_sampr[sr_index]);
rb->pcm_set_frequency(rb->hw_freq_sampr[sr_index]);
rb->pcm_play_data(get_more, NULL, 0);
rb->pcm_play_data(get_more, NULL, NULL, 0);
sound_playing = true;
}

10
apps/plugins/pdbox/PDa/src/s_audio_rockbox.c
View File

@ -26,7 +26,7 @@
#include "s_stuff.h"
/* Declare functions that go to IRAM. */
void pdbox_get_more(unsigned char** start, size_t* size) ICODE_ATTR;
void pdbox_get_more(const void** start, size_t* size) ICODE_ATTR;
int rockbox_send_dacs(void) ICODE_ATTR;
/* Extern variables. */
@ -90,12 +90,12 @@ void rockbox_close_audio(void)
}
/* Rockbox audio callback. */
void pdbox_get_more(unsigned char** start, size_t* size)
void pdbox_get_more(const void** start, size_t* size)
{
if(outbuf_fill > 0)
{
/* Store output data address and size. */
*start = (unsigned char*) outbuf[outbuf_tail].data;
*start = outbuf[outbuf_tail].data;
*size = sizeof(outbuf[outbuf_tail].data);
/* Free this part of output buffer. */
@ -116,8 +116,6 @@ void pdbox_get_more(unsigned char** start, size_t* size)
playing = false;
/* Nothing to play. */
*start = NULL;
*size = 0;
}
}
@ -185,7 +183,7 @@ int rockbox_send_dacs(void)
if(!playing && outbuf_fill > 0)
{
/* Start playing. */
rb->pcm_play_data(pdbox_get_more, NULL, 0);
rb->pcm_play_data(pdbox_get_more, NULL, NULL, 0);
/* Set status flag. */
playing = true;

7
apps/plugins/pitch_detector.c
View File

@ -952,7 +952,7 @@ static uint32_t ICODE_ATTR buffer_magnitude(int16_t *input)
}
/* Stop the recording when the buffer is full */
static void recording_callback(int status, void **start, size_t *size)
static void recording_callback(void **start, size_t *size)
{
int tail = audio_tail ^ 1;
@ -963,8 +963,6 @@ static void recording_callback(int status, void **start, size_t *size)
/* Always record full buffer, even if not required */
*start = audio_data[tail];
*size = BUFFER_SIZE * sizeof (int16_t);
(void)status;
}
#endif /* SIMULATOR */
@ -973,7 +971,8 @@ static void record_data(void)
{
#ifndef SIMULATOR
/* Always record full buffer, even if not required */
rb->pcm_record_data(recording_callback, audio_data[audio_tail],
rb->pcm_record_data(recording_callback, NULL,
audio_data[audio_tail],
BUFFER_SIZE * sizeof (int16_t));
#endif
}

6
apps/plugins/rockboy/rbsound.c
View File

@ -16,10 +16,10 @@ static unsigned short *buf=0, *hwbuf=0;
static bool newly_started;
static void get_more(unsigned char** start, size_t* size)
static void get_more(const void** start, size_t* size)
{
memcpy(hwbuf, &buf[pcm.len*doneplay], BUF_SIZE*sizeof(short));
*start = (unsigned char*)(hwbuf);
*start = hwbuf;
*size = BUF_SIZE*sizeof(short);
doneplay=1;
}
@ -76,7 +76,7 @@ int rockboy_pcm_submit(void)
if(newly_started)
{
rb->pcm_play_data(&get_more,NULL,0);
rb->pcm_play_data(&get_more, NULL, NULL,0);
newly_started = false;
}

6
apps/plugins/test_sampr.c
View File

@ -90,13 +90,13 @@ static int16_t ICODE_ATTR fsin(uint32_t phase)
}
/* ISR handler to get next block of data */
static void get_more(unsigned char **start, size_t *size)
static void get_more(const void **start, size_t *size)
{
/* Free previous buffer */
output_head += output_step;
output_step = 0;
*start = (unsigned char *)output_buf[output_head & OUTPUT_CHUNK_MASK];
*start = output_buf[output_head & OUTPUT_CHUNK_MASK];
*size = OUTPUT_CHUNK_SIZE;
/* Keep repeating previous if source runs low */
@ -236,7 +236,7 @@ static void play_tone(bool volume_set)
IF_PRIO(, PRIORITY_PLAYBACK)
IF_COP(, CPU));
rb->pcm_play_data(get_more, NULL, 0);
rb->pcm_play_data(get_more, NULL, NULL, 0);
#ifndef HAVE_VOLUME_IN_LIST
if (volume_set)

9
apps/plugins/zxbox/spsound.c
View File

@ -189,12 +189,11 @@ void autoclose_sound(void)
}
#endif
}
static void get_more(unsigned char** start, size_t* size)
static void get_more(const void** start, size_t* size)
{
doneplay = 1;
rb->pcm_play_stop();
(void)*start;
(void)*size;
(void)start;
(void)size;
}
/* sp_sound_buf is Unsigned 8 bit, Rate 8000 Hz, Mono */
@ -219,7 +218,7 @@ static void write_buf(void){
= my_buf[j+10] = my_buf[j+11] \
= (((byte)sp_sound_buf[i])<<8) >> settings.volume;
rb->pcm_play_data(&get_more,(unsigned char*)(my_buf),TMNUM*4*3*2);
rb->pcm_play_data(&get_more,NULL,(unsigned char*)(my_buf),TMNUM*4*3*2);
#if 0
/* can use to save and later analyze what we produce */

36
apps/recorder/pcm_record.c
View File

@ -257,20 +257,9 @@ enum
/*******************************************************************/
/* Callback for when more data is ready - called in interrupt context */
static void pcm_rec_have_more(int status, void **start, size_t *size)
static void pcm_rec_have_more(void **start, size_t *size)
{
if (status < 0)
{
/* some error condition */
if (status == DMA_REC_ERROR_DMA)
{
/* Flush recorded data to disk and stop recording */
queue_post(&pcmrec_queue, PCMREC_STOP, 0);
return;
}
/* else try again next transmission - frame is invalid */
}
else if (!dma_lock)
if (!dma_lock)
{
/* advance write position */
int next_pos = (dma_wr_pos + PCM_CHUNK_SIZE) & PCM_CHUNK_MASK;
@ -287,6 +276,23 @@ static void pcm_rec_have_more(int status, void **start, size_t *size)
*size = PCM_CHUNK_SIZE;
} /* pcm_rec_have_more */
static enum pcm_dma_status pcm_rec_status_callback(enum pcm_dma_status status)
{
if (status < PCM_DMAST_OK)
{
/* some error condition */
if (status == PCM_DMAST_ERR_DMA)
{
/* Flush recorded data to disk and stop recording */
queue_post(&pcmrec_queue, PCMREC_STOP, 0);
return status;
}
/* else try again next transmission - frame is invalid */
}
return PCM_DMAST_OK;
} /* pcm_rec_status_callback */
static void reset_hardware(void)
{
/* reset pcm to defaults */
@ -1239,8 +1245,8 @@ static void pcmrec_set_recording_options(
{
/* start DMA transfer */
dma_lock = pre_record_ticks == 0;
pcm_record_data(pcm_rec_have_more, GET_PCM_CHUNK(dma_wr_pos),
PCM_CHUNK_SIZE);
pcm_record_data(pcm_rec_have_more, pcm_rec_status_callback,
GET_PCM_CHUNK(dma_wr_pos), PCM_CHUNK_SIZE);
}
else
{

17
apps/voice_thread.c
View File

@ -116,9 +116,12 @@ enum voice_thread_messages
/* Structure to store clip data callback info */
struct voice_info
{
pcm_play_callback_type get_more; /* Callback to get more clips */
unsigned char *start; /* Start of clip */
size_t size; /* Size of clip */
/* Callback to get more clips */
void (*get_more)(unsigned char** start, size_t* size);
/* Start of clip */
unsigned char *start;
/* Size of clip */
size_t size;
};
/* Private thread data for its current state that must be passed to its
@ -148,14 +151,14 @@ static inline int voice_unplayed_frames(void)
}
/* Mixer channel callback */
static void voice_pcm_callback(unsigned char **start, size_t *size)
static void voice_pcm_callback(const void **start, size_t *size)
{
if (voice_unplayed_frames() == 0)
return; /* Done! */
unsigned int i = ++cur_buf_out % VOICE_FRAMES;
*start = (unsigned char *)voicebuf[i];
*start = voicebuf[i];
*size = voicebuf_sizes[i];
}
@ -167,7 +170,7 @@ static void voice_start_playback(void)
unsigned int i = cur_buf_out % VOICE_FRAMES;
mixer_channel_play_data(PCM_MIXER_CHAN_VOICE, voice_pcm_callback,
(unsigned char *)voicebuf[i], voicebuf_sizes[i]);
voicebuf[i], voicebuf_sizes[i]);
}
/* Stop the voice channel */
@ -198,7 +201,7 @@ static void voice_buf_commit(size_t size)
/* Stop any current clip and start playing a new one */
void mp3_play_data(const unsigned char* start, int size,
pcm_play_callback_type get_more)
void (*get_more)(unsigned char** start, size_t* size))
{
if (get_more != NULL && start != NULL && (ssize_t)size > 0)
{

8
firmware/asm/arm/pcm-mixer-armv4.c
View File

@ -24,9 +24,9 @@
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(void *out,
void *src0,
const void *src0,
int32_t src0_amp,
void *src1,
const void *src1,
int32_t src1_amp,
size_t size)
{
@ -96,7 +96,7 @@ static FORCE_INLINE void mix_samples(void *out,
if (src0_amp != MIX_AMP_UNITY)
{
/* Keep unity in src0, amp0 */
int16_t *src_tmp = src0;
const void *src_tmp = src0;
src0 = src1;
src1 = src_tmp;
src1_amp = src0_amp;
@ -133,7 +133,7 @@ static FORCE_INLINE void mix_samples(void *out,
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(void *out,
void *src,
const void *src,
int32_t amp,
size_t size)
{

6
firmware/asm/arm/pcm-mixer-armv5.c
View File

@ -24,9 +24,9 @@
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(void *out,
void *src0,
const void *src0,
int32_t src0_amp,
void *src1,
const void *src1,
int32_t src1_amp,
size_t size)
{
@ -57,7 +57,7 @@ static FORCE_INLINE void mix_samples(void *out,
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(void *out,
void *src,
const void *src,
int32_t amp,
size_t size)
{

6
firmware/asm/arm/pcm-mixer-armv6.c
View File

@ -23,9 +23,9 @@
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(void *out,
void *src0,
const void *src0,
int32_t src0_amp,
void *src1,
const void *src1,
int32_t src1_amp,
size_t size)
{
@ -71,7 +71,7 @@ static FORCE_INLINE void mix_samples(void *out,
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(void *out,
void *src,
const void *src,
int32_t amp,
size_t size)
{

6
firmware/asm/m68k/pcm-mixer.c
View File

@ -56,9 +56,9 @@ static FORCE_INLINE void restore_emac_context(void)
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(void *out,
void *src0,
const void *src0,
int32_t src0_amp,
void *src1,
const void *src1,
int32_t src1_amp,
size_t size)
{
@ -94,7 +94,7 @@ static FORCE_INLINE void mix_samples(void *out,
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(void *out,
void *src,
const void *src,
int32_t amp,
size_t size)
{

8
firmware/asm/pcm-mixer.c
View File

@ -28,9 +28,9 @@
#include "dsp-util.h" /* for clip_sample_16 */
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(int16_t *out,
int16_t *src0,
const int16_t *src0,
int32_t src0_amp,
int16_t *src1,
const int16_t *src1,
int32_t src1_amp,
size_t size)
{
@ -64,7 +64,7 @@ static FORCE_INLINE void mix_samples(int16_t *out,
if (src0_amp != MIX_AMP_UNITY)
{
/* Keep unity in src0, amp0 */
int16_t *src_tmp = src0;
const int16_t *src_tmp = src0;
src0 = src1;
src1 = src_tmp;
src1_amp = src0_amp;
@ -84,7 +84,7 @@ static FORCE_INLINE void mix_samples(int16_t *out,
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(int16_t *out,
int16_t *src,
const int16_t *src,
int32_t amp,
size_t size)
{

55
firmware/export/pcm-internal.h
View File

@ -41,24 +41,28 @@ void pcm_do_peak_calculation(struct pcm_peaks *peaks, bool active,
/** The following are for internal use between pcm.c and target-
specific portion **/
/* Called by the bottom layer ISR when more data is needed. Returns non-
* zero size if more data is to be played. Setting start to NULL
* forces stop. */
void pcm_play_get_more_callback(void **start, size_t *size);
/* Called by the bottom layer ISR after next transfer has begun in order
to fill more data for next "get more" callback to implement double-buffered
callbacks - except for a couple ASM handlers, help drivers to implement
this functionality with minimal overhead */
static FORCE_INLINE void pcm_play_dma_started_callback(void)
static FORCE_INLINE enum pcm_dma_status pcm_call_status_cb(
pcm_status_callback_type callback, enum pcm_dma_status status)
{
extern void (* pcm_play_dma_started)(void);
void (* callback)(void) = pcm_play_dma_started;
if (callback)
callback();
if (!callback)
return status;
return callback(status);
}
static FORCE_INLINE enum pcm_dma_status
pcm_play_dma_status_callback(enum pcm_dma_status status)
{
extern enum pcm_dma_status
(* volatile pcm_play_status_callback)(enum pcm_dma_status);
return pcm_call_status_cb(pcm_play_status_callback, status);
}
/* Called by the bottom layer ISR when more data is needed. Returns true
* if a new buffer is available, false otherwise. */
bool pcm_play_dma_complete_callback(enum pcm_dma_status status,
const void **addr, size_t *size);
extern unsigned long pcm_curr_sampr;
extern unsigned long pcm_sampr;
extern int pcm_fsel;
@ -90,10 +94,29 @@ extern volatile bool pcm_recording;
void pcm_rec_dma_init(void);
void pcm_rec_dma_close(void);
void pcm_rec_dma_start(void *addr, size_t size);
void pcm_rec_dma_record_more(void *start, size_t size);
void pcm_rec_dma_stop(void);
const void * pcm_rec_dma_get_peak_buffer(void);
static FORCE_INLINE enum pcm_dma_status
pcm_rec_dma_status_callback(enum pcm_dma_status status)
{
extern enum pcm_dma_status
(* volatile pcm_rec_status_callback)(enum pcm_dma_status);
return pcm_call_status_cb(pcm_rec_status_callback, status);
}
/* Called by the bottom layer ISR when more data is needed. Returns true
* if a new buffer is available, false otherwise. */
bool pcm_rec_dma_complete_callback(enum pcm_dma_status status,
void **addr, size_t *size);
#ifdef HAVE_PCM_REC_DMA_ADDRESS
#define pcm_rec_dma_addr(addr) pcm_dma_addr(addr)
#else
#define pcm_rec_dma_addr(addr) addr
#endif
#endif /* HAVE_RECORDING */
#endif /* PCM_INTERNAL_H */

31
firmware/export/pcm.h
View File

@ -24,17 +24,23 @@
#include <string.h> /* size_t */
#include "config.h"
#define DMA_REC_ERROR_DMA (-1)
enum pcm_dma_status
{
#ifdef HAVE_SPDIF_REC
#define DMA_REC_ERROR_SPDIF (-2)
PCM_DMAST_ERR_SPDIF = -2,
#endif
PCM_DMAST_ERR_DMA = -1,
PCM_DMAST_OK = 0,
PCM_DMAST_STARTED = 1,
};
/** RAW PCM routines used with playback and recording **/
/* Typedef for registered callbacks */
typedef void (*pcm_play_callback_type)(unsigned char **start,
size_t *size);
typedef void (*pcm_rec_callback_type)(int status, void **start, size_t *size);
/* Typedef for registered data callback */
typedef void (*pcm_play_callback_type)(const void **start, size_t *size);
/* Typedef for registered status callback */
typedef enum pcm_dma_status (*pcm_status_callback_type)(enum pcm_dma_status status);
/* set the pcm frequency - use values in hw_sampr_list
* when CONFIG_SAMPR_TYPES is #defined, or-in SAMPR_TYPE_* fields with
@ -62,7 +68,8 @@ bool pcm_is_initialized(void);
/* This is for playing "raw" PCM data */
void pcm_play_data(pcm_play_callback_type get_more,
unsigned char* start, size_t size);
pcm_status_callback_type status_cb,
const void *start, size_t size);
void pcm_calculate_peaks(int *left, int *right);
const void* pcm_get_peak_buffer(int* count);
@ -73,12 +80,13 @@ void pcm_play_pause(bool play);
bool pcm_is_paused(void);
bool pcm_is_playing(void);
void pcm_play_set_dma_started_callback(void (* callback)(void));
#ifdef HAVE_RECORDING
/** RAW PCM recording routines **/
/* Typedef for registered data callback */
typedef void (*pcm_rec_callback_type)(void **start, size_t *size);
/* Reenterable locks for locking and unlocking the recording interrupt */
void pcm_rec_lock(void);
void pcm_rec_unlock(void);
@ -90,6 +98,7 @@ void pcm_close_recording(void);
/* Start recording "raw" PCM data */
void pcm_record_data(pcm_rec_callback_type more_ready,
pcm_status_callback_type status_cb,
void *start, size_t size);
/* Stop tranferring data into supplied buffer */
@ -98,10 +107,6 @@ void pcm_stop_recording(void);
/* Is pcm currently recording? */
bool pcm_is_recording(void);
/* Called by bottom layer ISR when transfer is complete. Returns non-zero
* size if successful. Setting start to NULL forces stop. */
void pcm_rec_more_ready_callback(int status, void **start, size_t *size);
void pcm_calculate_rec_peaks(int *left, int *right);
#endif /* HAVE_RECORDING */

4
firmware/export/pcm_mixer.h
View File

@ -86,7 +86,7 @@ enum channel_status
/* Start playback on a channel */
void mixer_channel_play_data(enum pcm_mixer_channel channel,
pcm_play_callback_type get_more,
unsigned char *start, size_t size);
const void *start, size_t size);
/* Pause or resume a channel (when started) */
void mixer_channel_play_pause(enum pcm_mixer_channel channel, bool play);
@ -105,7 +105,7 @@ enum channel_status mixer_channel_status(enum pcm_mixer_channel channel);
size_t mixer_channel_get_bytes_waiting(enum pcm_mixer_channel channel);
/* Return pointer to channel's playing audio data and the size remaining */
void * mixer_channel_get_buffer(enum pcm_mixer_channel channel, int *count);
const void * mixer_channel_get_buffer(enum pcm_mixer_channel channel, int *count);
/* Calculate peak values for channel */
void mixer_channel_calculate_peaks(enum pcm_mixer_channel channel,

2
firmware/export/pp5002.h
View File

@ -43,7 +43,9 @@
#define IISCONFIG (*(volatile unsigned long *)(0xc0002500))
#define IISFIFO_CFG (*(volatile unsigned long *)(0xc000251c))
#define IISFIFO_WR (*(volatile unsigned long *)(0xc0002540))
#define IISFIFO_WRH (*(volatile unsigned short *)(0xc0002540))
#define IISFIFO_RD (*(volatile unsigned long *)(0xc0002580))
#define IISFIFO_RDH (*(volatile unsigned short *)(0xc0002540))
/**
* IISCONFIG bits:

115
firmware/pcm.c
View File

@ -41,7 +41,8 @@
* pcm_play_lock
* pcm_play_unlock
* Semi-private -
* pcm_play_get_more_callback
* pcm_play_dma_complete_callback
* pcm_play_dma_status_callback
* pcm_play_dma_init
* pcm_play_dma_postinit
* pcm_play_dma_start
@ -66,7 +67,8 @@
* pcm_rec_lock
* pcm_rec_unlock
* Semi-private -
* pcm_rec_more_ready_callback
* pcm_rec_dma_complete_callback
* pcm_rec_dma_status_callback
* pcm_rec_dma_init
* pcm_rec_dma_close
* pcm_rec_dma_start
@ -83,9 +85,12 @@
/* 'true' when all stages of pcm initialization have completed */
static bool pcm_is_ready = false;
/* the registered callback function to ask for more mp3 data */
static pcm_play_callback_type pcm_callback_for_more SHAREDBSS_ATTR = NULL;
void (* pcm_play_dma_started)(void) SHAREDBSS_ATTR = NULL;
/* The registered callback function to ask for more mp3 data */
static volatile pcm_play_callback_type
pcm_callback_for_more SHAREDBSS_ATTR = NULL;
/* The registered callback function to inform of DMA status */
volatile pcm_status_callback_type
pcm_play_status_callback SHAREDBSS_ATTR = NULL;
/* PCM playback state */
volatile bool pcm_playing SHAREDBSS_ATTR = false;
/* PCM paused state. paused implies playing */
@ -104,7 +109,7 @@ static struct pcm_peaks global_peaks;
static void pcm_play_stopped(void)
{
pcm_callback_for_more = NULL;
pcm_play_dma_started = NULL;
pcm_play_status_callback = NULL;
pcm_paused = false;
pcm_playing = false;
}
@ -258,27 +263,29 @@ bool pcm_is_initialized(void)
}
/* Common code to pcm_play_data and pcm_play_pause */
static void pcm_play_data_start(unsigned char *start, size_t size)
static void pcm_play_data_start(const void *addr, size_t size)
{
ALIGN_AUDIOBUF(start, size);
ALIGN_AUDIOBUF(addr, size);
if (!(start && size))
if (!(addr && size))
{
pcm_play_callback_type get_more = pcm_callback_for_more;
addr = NULL;
size = 0;
if (get_more)
{
logf(" get_more");
get_more(&start, &size);
ALIGN_AUDIOBUF(start, size);
get_more(&addr, &size);
ALIGN_AUDIOBUF(addr, size);
}
}
if (start && size)
if (addr && size)
{
logf(" pcm_play_dma_start");
pcm_apply_settings();
pcm_play_dma_start(start, size);
pcm_play_dma_start(addr, size);
pcm_playing = true;
pcm_paused = false;
return;
@ -291,13 +298,15 @@ static void pcm_play_data_start(unsigned char *start, size_t size)
}
void pcm_play_data(pcm_play_callback_type get_more,
unsigned char *start, size_t size)
pcm_status_callback_type status_cb,
const void *start, size_t size)
{
logf("pcm_play_data");
pcm_play_lock();
pcm_callback_for_more = get_more;
pcm_play_status_callback = status_cb;
logf(" pcm_play_data_start");
pcm_play_data_start(start, size);
@ -305,26 +314,33 @@ void pcm_play_data(pcm_play_callback_type get_more,
pcm_play_unlock();
}
void pcm_play_get_more_callback(void **start, size_t *size)
bool pcm_play_dma_complete_callback(enum pcm_dma_status status,
const void **addr, size_t *size)
{
/* Check status callback first if error */
if (status < PCM_DMAST_OK)
status = pcm_play_dma_status_callback(status);
pcm_play_callback_type get_more = pcm_callback_for_more;
*size = 0;
if (get_more && start)
if (get_more && status >= PCM_DMAST_OK)
{
/* Call registered callback */
get_more((unsigned char **)start, size);
*addr = NULL;
*size = 0;
ALIGN_AUDIOBUF(*start, *size);
/* Call registered callback to obtain next buffer */
get_more(addr, size);
ALIGN_AUDIOBUF(*addr, *size);
if (*start && *size)
return;
if (*addr && *size)
return true;
}
/* Error, callback missing or no more DMA to do */
pcm_play_dma_stop();
pcm_play_stopped();
return false;
}
void pcm_play_pause(bool play)
@ -428,12 +444,6 @@ void pcm_apply_settings(void)
}
}
/* register callback to buffer more data */
void pcm_play_set_dma_started_callback(void (* callback)(void))
{
pcm_play_dma_started = callback;
}
#ifdef HAVE_RECORDING
/** Low level pcm recording apis **/
@ -442,6 +452,8 @@ static const void * volatile pcm_rec_peak_addr SHAREDBSS_ATTR = NULL;
/* the registered callback function for when more data is available */
static volatile pcm_rec_callback_type
pcm_callback_more_ready SHAREDBSS_ATTR = NULL;
volatile pcm_status_callback_type
pcm_rec_status_callback SHAREDBSS_ATTR = NULL;
/* DMA transfer in is currently active */
volatile bool pcm_recording SHAREDBSS_ATTR = false;
@ -450,6 +462,7 @@ static void pcm_recording_stopped(void)
{
pcm_recording = false;
pcm_callback_more_ready = NULL;
pcm_rec_status_callback = NULL;
}
/**
@ -542,13 +555,14 @@ void pcm_close_recording(void)
}
void pcm_record_data(pcm_rec_callback_type more_ready,
void *start, size_t size)
pcm_status_callback_type status_cb,
void *addr, size_t size)
{
logf("pcm_record_data");
ALIGN_AUDIOBUF(start, size);
ALIGN_AUDIOBUF(addr, size);
if (!(start && size))
if (!(addr && size))
{
logf(" no buffer");
return;
@ -557,17 +571,14 @@ void pcm_record_data(pcm_rec_callback_type more_ready,
pcm_rec_lock();
pcm_callback_more_ready = more_ready;
pcm_rec_status_callback = status_cb;
#ifdef HAVE_PCM_REC_DMA_ADDRESS
/* Need a physical DMA address translation, if not already physical. */
pcm_rec_peak_addr = pcm_dma_addr(start);
#else
pcm_rec_peak_addr = start;
#endif
pcm_rec_peak_addr = pcm_rec_dma_addr(addr);
logf(" pcm_rec_dma_start");
pcm_apply_settings();
pcm_rec_dma_start(start, size);
pcm_rec_dma_start(addr, size);
pcm_recording = true;
pcm_rec_unlock();
@ -589,33 +600,35 @@ void pcm_stop_recording(void)
pcm_rec_unlock();
} /* pcm_stop_recording */
void pcm_rec_more_ready_callback(int status, void **start, size_t *size)
bool pcm_rec_dma_complete_callback(enum pcm_dma_status status,
void **addr, size_t *size)
{
/* Check status callback first if error */
if (status < PCM_DMAST_OK)
status = pcm_rec_dma_status_callback(status);
pcm_rec_callback_type have_more = pcm_callback_more_ready;
*size = 0;
if (have_more && start)
if (have_more && status >= PCM_DMAST_OK)
{
have_more(status, start, size);
ALIGN_AUDIOBUF(*start, *size);
/* Call registered callback to obtain next buffer */
have_more(addr, size);
ALIGN_AUDIOBUF(*addr, *size);
if (*start && *size)
if (*addr && *size)
{
#ifdef HAVE_PCM_REC_DMA_ADDRESS
/* Need a physical DMA address translation, if not already
* physical. */
pcm_rec_peak_addr = pcm_dma_addr(*start);
#else
pcm_rec_peak_addr = *start;
#endif
return;
pcm_rec_peak_addr = pcm_rec_dma_addr(*addr);
return true;
}
}
/* Error, callback missing or no more DMA to do */
pcm_rec_dma_stop();
pcm_recording_stopped();
return false;
}
#endif /* HAVE_RECORDING */

35
firmware/pcm_mixer.c
View File

@ -39,7 +39,7 @@
/* Descriptor for each channel */
struct mixer_channel
{
unsigned char *start; /* Buffer pointer */
const void *start; /* Buffer pointer */
size_t size; /* Bytes remaining */
size_t last_size; /* Size of consumed data in prev. cycle */
pcm_play_callback_type get_more; /* Registered callback */
@ -103,16 +103,20 @@ static void channel_stopped(struct mixer_channel *chan)
}
/* Main PCM callback - sends the current prepared frame to play */
static void mixer_pcm_callback(unsigned char **start, size_t *size)
static void mixer_pcm_callback(const void **addr, size_t *size)
{
*start = (unsigned char *)downmix_buf[downmix_index];
*addr = downmix_buf[downmix_index];
*size = next_size;
}
/* Buffering callback - calls sub-callbacks and mixes the data for next
buffer to be sent from mixer_pcm_callback() */
static void MIXER_CALLBACK_ICODE mixer_buffer_callback(void)
static enum pcm_dma_status MIXER_CALLBACK_ICODE
mixer_buffer_callback(enum pcm_dma_status status)
{
if (status != PCM_DMAST_STARTED)
return status;
downmix_index ^= 1; /* Next buffer */
void *mixptr = downmix_buf[downmix_index];
@ -169,12 +173,11 @@ fill_frame:
if (LIKELY(!*chan_p))
{
write_samples(mixptr, (void *)chan->start,
chan->amplitude, mixsize);
write_samples(mixptr, chan->start, chan->amplitude, mixsize);
}
else
{
void *src0, *src1;
const void *src0, *src1;
unsigned int amp0, amp1;
/* Mix first two channels with each other as the downmix */
@ -228,6 +231,8 @@ fill_frame:
if (next_size)
*downmix_buf[downmix_index] = downmix_index ? 0x7fff7fff : 0x80008000;
#endif
return PCM_DMAST_OK;
}
/* Start PCM driver if it's not currently playing */
@ -245,15 +250,15 @@ static void mixer_start_pcm(void)
pcm_set_frequency(NATIVE_FREQUENCY);
/* Prepare initial frames and set up the double buffer */
mixer_buffer_callback();
mixer_buffer_callback(PCM_DMAST_STARTED);
/* Save the previous call's output */
void *start = downmix_buf[downmix_index];
mixer_buffer_callback();
mixer_buffer_callback(PCM_DMAST_STARTED);
pcm_play_set_dma_started_callback(mixer_buffer_callback);
pcm_play_data(mixer_pcm_callback, start, MIX_FRAME_SIZE);
pcm_play_data(mixer_pcm_callback, mixer_buffer_callback,
start, MIX_FRAME_SIZE);
}
/** Public interfaces **/
@ -261,7 +266,7 @@ static void mixer_start_pcm(void)
/* Start playback on a channel */
void mixer_channel_play_data(enum pcm_mixer_channel channel,
pcm_play_callback_type get_more,
unsigned char *start, size_t size)
const void *start, size_t size)
{
struct mixer_channel *chan = &channels[channel];
@ -360,12 +365,12 @@ size_t mixer_channel_get_bytes_waiting(enum pcm_mixer_channel channel)
}
/* Return pointer to channel's playing audio data and the size remaining */
void * mixer_channel_get_buffer(enum pcm_mixer_channel channel, int *count)
const void * mixer_channel_get_buffer(enum pcm_mixer_channel channel, int *count)
{
struct mixer_channel *chan = &channels[channel];
void * buf = *(unsigned char * volatile *)&chan->start;
const void * buf = *(const void * volatile *)&chan->start;
size_t size = *(size_t volatile *)&chan->size;
void * buf2 = *(unsigned char * volatile *)&chan->start;
const void * buf2 = *(const void * volatile *)&chan->start;
/* Still same buffer? */
if (buf == buf2)

20
firmware/target/arm/as3525/pcm-as3525.c
View File

@ -36,9 +36,9 @@
* and the number of 32bits words has to
* fit in 11 bits of DMA register */
static void *dma_start_addr; /* Pointer to callback buffer */
static const void *dma_start_addr; /* Pointer to callback buffer */
static size_t dma_start_size; /* Size of callback buffer */
static void *dma_sub_addr; /* Pointer to sub buffer */
static const void *dma_sub_addr; /* Pointer to sub buffer */
static size_t dma_rem_size; /* Remaining size - in 4*32 bits */
static size_t play_sub_size; /* size of current subtransfer */
static void dma_callback(void);
@ -100,9 +100,8 @@ static void dma_callback(void)
if(!dma_rem_size)
{
pcm_play_get_more_callback(&dma_start_addr, &dma_start_size);
if (!dma_start_size)
if(!pcm_play_dma_complete_callback(PCM_DMAST_OK, &dma_start_addr,
&dma_start_size))
return;
dma_sub_addr = dma_start_addr;
@ -111,7 +110,7 @@ static void dma_callback(void)
/* force writeback */
commit_dcache_range(dma_start_addr, dma_start_size);
play_start_pcm();
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
else
{
@ -123,7 +122,7 @@ void pcm_play_dma_start(const void *addr, size_t size)
{
is_playing = true;
dma_start_addr = (void*)addr;
dma_start_addr = addr;
dma_start_size = size;
dma_sub_addr = dma_start_addr;
dma_rem_size = size;
@ -368,7 +367,12 @@ void INT_I2SIN(void)
}
}
pcm_rec_more_ready_callback(0, (void *)&rec_dma_addr, &rec_dma_size);
/* Inform middle layer */
if (pcm_rec_dma_complete_callback(PCM_DMAST_OK, (void **)&rec_dma_addr,
&rec_dma_size))
{
pcm_rec_dma_status_callback(PCM_DMAST_STARTED);
}
}

9
firmware/target/arm/imx233/pcm-imx233.c
View File

@ -49,15 +49,13 @@ static void play(const void *addr, size_t size)
void INT_DAC_DMA(void)
{
void *start;
const void *start;
size_t size;
pcm_play_get_more_callback(&start, &size);
if(size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
{
play(start, size);
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
imx233_dma_clear_channel_interrupt(APB_AUDIO_DAC);
@ -65,6 +63,7 @@ void INT_DAC_DMA(void)
void INT_DAC_ERROR(void)
{
/* TODO: Inform of error through pcm_play_dma_complete_callback */
}
void pcm_play_lock(void)

121
firmware/target/arm/imx31/gigabeat-s/pcm-gigabeat-s.c
View File

@ -78,12 +78,20 @@ static struct dma_data dma_play_data =
.state = 0
};
static void play_start_dma(const void *addr, size_t size)
{
commit_dcache_range(addr, size);
dma_play_bd.buf_addr = (void *)addr_virt_to_phys((unsigned long)addr);
dma_play_bd.mode.count = size;
dma_play_bd.mode.command = TRANSFER_16BIT;
dma_play_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
sdma_channel_run(DMA_PLAY_CH_NUM);
}
static void play_dma_callback(void)
{
void *start;
size_t size;
bool rror;
if (dma_play_data.locked != 0)
{
/* Callback is locked out */
@ -91,22 +99,17 @@ static void play_dma_callback(void)
return;
}
rror = dma_play_bd.mode.status & BD_RROR;
pcm_play_get_more_callback(rror ? NULL : &start, &size);
if (size == 0)
return;
/* Flush any pending cache writes */
commit_dcache_range(start, size);
dma_play_bd.buf_addr = (void *)addr_virt_to_phys((unsigned long)start);
dma_play_bd.mode.count = size;
dma_play_bd.mode.command = TRANSFER_16BIT;
dma_play_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
sdma_channel_run(DMA_PLAY_CH_NUM);
pcm_play_dma_started_callback();
/* Inform of status and get new buffer */
enum pcm_dma_status status = (dma_play_bd.mode.status & BD_RROR) ?
PCM_DMAST_ERR_DMA : PCM_DMAST_OK;
const void *addr;
size_t size;
if (pcm_play_dma_complete_callback(status, &addr, &size))
{
play_start_dma(addr, size);
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
}
void pcm_play_lock(void)
@ -221,15 +224,11 @@ void pcm_play_dma_start(const void *addr, size_t size)
if (!sdma_channel_reset(DMA_PLAY_CH_NUM))
return;
commit_dcache_range(addr, size);
dma_play_bd.buf_addr =
(void *)addr_virt_to_phys((unsigned long)(void *)addr);
dma_play_bd.mode.count = size;
dma_play_bd.mode.command = TRANSFER_16BIT;
dma_play_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
/* Begin I2S transmission */
play_start_pcm();
sdma_channel_run(DMA_PLAY_CH_NUM);
/* Begin DMA transfer */
play_start_dma(addr, size);
}
void pcm_play_dma_stop(void)
@ -332,37 +331,39 @@ static struct dma_data dma_rec_data =
.state = 0
};
static void rec_start_dma(void *addr, size_t size)
{
discard_dcache_range(addr, size);
addr = (void *)addr_virt_to_phys((unsigned long)addr);
dma_rec_bd.buf_addr = addr;
dma_rec_bd.mode.count = size;
dma_rec_bd.mode.command = TRANSFER_16BIT;
dma_rec_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
sdma_channel_run(DMA_REC_CH_NUM);
}
static void rec_dma_callback(void)
{
int status = 0;
void *start;
size_t size;
if (dma_rec_data.locked != 0)
{
dma_rec_data.callback_pending = dma_rec_data.state;
return; /* Callback is locked out */
}
if (dma_rec_bd.mode.status & BD_RROR)
status = DMA_REC_ERROR_DMA;
/* Inform middle layer */
enum pcm_dma_status status = (dma_rec_bd.mode.status & BD_RROR) ?
PCM_DMAST_ERR_DMA : PCM_DMAST_OK;
void *addr;
size_t size;
pcm_rec_more_ready_callback(status, &start, &size);
if (size == 0)
return;
/* Invalidate - buffer must be coherent */
discard_dcache_range(start, size);
start = (void *)addr_virt_to_phys((unsigned long)start);
dma_rec_bd.buf_addr = start;
dma_rec_bd.mode.count = size;
dma_rec_bd.mode.command = TRANSFER_16BIT;
dma_rec_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
sdma_channel_run(DMA_REC_CH_NUM);
if (pcm_rec_dma_complete_callback(status, &addr, &size))
{
rec_start_dma(addr, size);
pcm_rec_dma_status_callback(PCM_DMAST_STARTED);
}
}
void pcm_rec_lock(void)
@ -426,29 +427,21 @@ void pcm_rec_dma_start(void *addr, size_t size)
if (!sdma_channel_reset(DMA_REC_CH_NUM))
return;
/* Invalidate - buffer must be coherent */
discard_dcache_range(addr, size);
addr = (void *)addr_virt_to_phys((unsigned long)addr);
dma_rec_bd.buf_addr = addr;
dma_rec_bd.mode.count = size;
dma_rec_bd.mode.command = TRANSFER_16BIT;
dma_rec_bd.mode.status = BD_DONE | BD_WRAP | BD_INTR;
dma_rec_data.state = 1; /* Check callback on unlock */
SSI_SRCR1 |= SSI_SRCR_RFEN0; /* Enable RX FIFO */
/* Ensure clear FIFO */
while (SSI_SFCSR1 & SSI_SFCSR_RFCNT0)
SSI_SRX0_1;
dma_rec_data.state = 1; /* Check callback on unlock */
SSI_SRCR1 |= SSI_SRCR_RFEN0; /* Enable RX FIFO */
/* Enable receive */
SSI_SCR1 |= SSI_SCR_RE;
SSI_SIER1 |= SSI_SIER_RDMAE; /* Enable DMA req. */
sdma_channel_run(DMA_REC_CH_NUM);
/* Begin DMA transfer */
rec_start_dma(addr, size);
}
void pcm_rec_dma_close(void)

62
firmware/target/arm/pcm-telechips.c
View File

@ -33,7 +33,12 @@ struct dma_data
{
/* NOTE: The order of size and p is important if you use assembler
optimised fiq handler, so don't change it. */
uint16_t *p;
union
{
uint16_t *p;
const void *p_r;
void *p_w;
};
size_t size;
#if NUM_CORES > 1
unsigned core;
@ -143,7 +148,7 @@ static void play_stop_pcm(void)
void pcm_play_dma_start(const void *addr, size_t size)
{
dma_play_data.p = (uint16_t*)addr;
dma_play_data.p_r = addr;
dma_play_data.size = size;
#if NUM_CORES > 1
@ -248,8 +253,9 @@ void fiq_handler(void)
* r0-r3 and r12 is a working register.
*/
asm volatile (
"stmfd sp!, { r0-r4, lr } \n" /* stack scratch regs and lr */
"mov r4, #0 \n" /* Was the callback called? */
"sub lr, lr, #4 \n"
"stmfd sp!, { r0-r3, lr } \n" /* stack scratch regs and lr */
"mov r14, #0 \n" /* Was the callback called? */
#if defined(CPU_TCC780X)
"mov r8, #0xc000 \n" /* DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK */
"ldr r9, =0xf3001004 \n" /* CREQ */
@ -260,7 +266,7 @@ void fiq_handler(void)
"str r8, [r9] \n" /* clear DAI IRQs */
"ldmia r11, { r8-r9 } \n" /* r8 = p, r9 = size */
"cmp r9, #0x10 \n" /* is size <16? */
"blt .more_data \n" /* if so, ask pcmbuf for more data */
"blo .more_data \n" /* if so, ask pcmbuf for more data */
".fill_fifo: \n"
"ldr r12, [r8], #4 \n" /* load two samples */
@ -282,29 +288,30 @@ void fiq_handler(void)
"sub r9, r9, #0x10 \n" /* 4 words written */
"stmia r11, { r8-r9 } \n" /* save p and size */
"cmp r4, #0 \n" /* Callback called? */
"beq .exit \n"
/* "mov r4, #0 \n" If get_more could be called multiple times! */
"ldr r2, =pcm_play_dma_started\n"
"ldr r2, [r2] \n"
"cmp r2, #0 \n"
"blxne r2 \n"
"cmp r14, #0 \n" /* Callback called? */
"ldmeqfd sp!, { r0-r3, pc }^ \n" /* no? -> exit */
".exit: \n"
"ldmfd sp!, { r0-r4, lr } \n"
"subs pc, lr, #4 \n" /* FIQ specific return sequence */
"ldr r1, =pcm_play_status_callback \n"
"ldr r1, [r1] \n"
"cmp r1, #0 \n"
"movne r0, %1 \n"
"blxne r1 \n"
"ldmfd sp!, { r0-r3, pc }^ \n" /* exit */
".more_data: \n"
"mov r4, #1 \n" /* Remember we got more data in this FIQ */
"ldr r2, =pcm_play_get_more_callback \n"
"mov r0, r11 \n" /* r0 = &p */
"add r1, r11, #4 \n" /* r1 = &size */
"blx r2 \n" /* call pcm_play_get_more_callback */
"ldmia r11, { r8-r9 } \n" /* load new p and size */
"cmp r9, #0x10 \n" /* did we actually get enough data? */
"bpl .fill_fifo \n" /* not stop and enough? refill */
"b .exit \n"
"mov r14, #1 \n" /* Remember we got more data in this FIQ */
"mov r0, %0 \n" /* r0 = status */
"mov r1, r11 \n" /* r1 = &dma_play_data.p_r */
"add r2, r11, #4 \n" /* r2 = &dma_play_data.size */
"mov lr, pc \n"
"ldr pc, =pcm_play_dma_complete_callback \n"
"cmp r0, #0 \n" /* any more to play? */
"ldmneia r11, { r8-r9 } \n" /* load new p and size */
"cmpne r9, #0x0f \n" /* did we actually get enough data? */
"bhi .fill_fifo \n" /* not stop and enough? refill */
"ldmfd sp!, { r0-r3, pc }^ \n" /* exit */
".ltorg \n"
: : "i"(PCM_DMAST_OK), "i"(PCM_DMAST_STARTED)
);
}
#else /* C version for reference */
@ -316,9 +323,8 @@ void fiq_handler(void)
if (dma_play_data.size < 16)
{
/* p is empty, get some more data */
new_buffer = true;
pcm_play_get_more_callback((void**)&dma_play_data.p,
&dma_play_data.size);
new_buffer = pcm_play_dma_complete_callback(&dma_play_data.p_r,
&dma_play_data.size);
}
if (dma_play_data.size >= 16)
@ -339,7 +345,7 @@ void fiq_handler(void)
CREQ = DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK;
if (new_buffer)
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
#endif

14
firmware/target/arm/pnx0101/pcm-pnx0101.c
View File

@ -28,7 +28,7 @@
short __attribute__((section(".dmabuf"))) dma_buf_left[DMA_BUF_SAMPLES];
short __attribute__((section(".dmabuf"))) dma_buf_right[DMA_BUF_SAMPLES];
unsigned short* p IBSS_ATTR;
const int16_t* p IBSS_ATTR;
size_t p_size IBSS_ATTR;
void pcm_play_lock(void)
@ -41,7 +41,7 @@ void pcm_play_unlock(void)
void pcm_play_dma_start(const void *addr, size_t size)
{
p = (unsigned short*)addr;
p = addr;
p_size = size;
}
@ -69,7 +69,7 @@ static inline void fill_dma_buf(int offset)
do
{
int count;
unsigned short *tmp_p;
const int16_t *tmp_p;
count = MIN(p_size / 4, (size_t)(lend - l));
tmp_p = p;
p_size -= count * 4;
@ -109,16 +109,14 @@ static inline void fill_dma_buf(int offset)
if (new_buffer)
{
new_buffer = false;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
if (l >= lend)
return;
pcm_play_get_more_callback((void**)&p, &p_size);
if (p_size)
new_buffer = true;
new_buffer = pcm_play_dma_complete_callback(PCM_DMAST_OK,
&p, &p_size);
}
while (p_size);
}

675
firmware/target/arm/pp/pcm-pp.c
View File

@ -30,26 +30,6 @@
/** DMA **/
#ifdef CPU_PP502x
/* 16-bit, L-R packed into 32 bits with left in the least significant halfword */
#define SAMPLE_SIZE 16
/* DMA Requests from IIS, Memory to peripheral, single transfer,
wait for DMA request, interrupt on complete */
#define DMA_PLAY_CONFIG ((DMA_REQ_IIS << DMA_CMD_REQ_ID_POS) | \
DMA_CMD_RAM_TO_PER | DMA_CMD_SINGLE | \
DMA_CMD_WAIT_REQ | DMA_CMD_INTR)
/* DMA status cannot be viewed from outside code in control because that can
* clear the interrupt from outside the handler and prevent the handler from
* from being called. Split up transfers to a reasonable size that is good as
* a timer, obtaining a keyclick position and peaking yet still keeps the
* FIQ count low.
*/
#define MAX_DMA_CHUNK_SIZE (pcm_curr_sampr >> 6) /* ~1/256 seconds */
#else
/* 32-bit, one left 32-bit sample followed by one right 32-bit sample */
#define SAMPLE_SIZE 32
#endif
struct dma_data
{
/* NOTE: The order of size and p is important if you use assembler
@ -57,6 +37,8 @@ struct dma_data
union
{
unsigned long addr;
const void *p_r;
void *p_w;
uint32_t *p16; /* For packed 16-16 stereo pairs */
uint16_t *p32; /* For individual samples converted to 32-bit */
};
@ -113,286 +95,72 @@ void pcm_dma_apply_settings(void)
}
#if defined(CPU_PP502x)
/* NOTE: direct stack use forbidden by GCC stack handling bug for FIQ */
void ICODE_ATTR __attribute__((interrupt("FIQ"))) fiq_playback(void)
{
bool new_buffer = false;
register size_t size;
DMA0_STATUS; /* Clear any pending interrupt */
size = (DMA0_CMD & 0xffff) + 4; /* Get size of trasfer that caused this
interrupt */
dma_play_data.addr += size;
dma_play_data.size -= size;
while (1)
{
if (dma_play_data.size > 0) {
size = MAX_DMA_CHUNK_SIZE;
/* Not at least MAX_DMA_CHUNK_SIZE left or there would be less
* than a FIFO's worth of data after this transfer? */
if (size + 16*4 > dma_play_data.size)
size = dma_play_data.size;
/* Set the new DMA values and activate channel */
DMA0_RAM_ADDR = dma_play_data.addr;
DMA0_CMD = DMA_PLAY_CONFIG | (size - 4) | DMA_CMD_START;
if (new_buffer)
pcm_play_dma_started_callback();
return;
}
new_buffer = true;
/* Buffer empty. Try to get more. */
pcm_play_get_more_callback((void **)&dma_play_data.addr,
&dma_play_data.size);
if (dma_play_data.size == 0) {
/* No more data */
return;
}
if (dma_play_data.addr < UNCACHED_BASE_ADDR) {
/* Flush any pending cache writes */
dma_play_data.addr = UNCACHED_ADDR(dma_play_data.addr);
commit_dcache();
}
}
}
#else
/* ASM optimised FIQ handler. Checks for the minimum allowed loop cycles by
* evalutation of free IISFIFO-slots against available source buffer words.
* Through this it is possible to move the check for IIS_TX_FREE_COUNT outside
* the loop and do some further optimization. Right after the loops (source
* buffer -> IISFIFO) are done we need to check whether we have to exit FIQ
* handler (this must be done, if all free FIFO slots were filled) or we will
* have to get some new source data. Important information kept from former
* ASM implementation (not used anymore): GCC fails to make use of the fact
* that FIQ mode has registers r8-r14 banked, and so does not need to be saved.
* This routine uses only these registers, and so will never touch the stack
* unless it actually needs to do so when calling pcm_callback_for_more.
* C version is still included below for reference and testing.
/* 16-bit, L-R packed into 32 bits with left in the least significant halfword */
#define SAMPLE_SIZE 16
/* DMA Requests from IIS, Memory to peripheral, single transfer,
wait for DMA request, interrupt on complete */
#define DMA_PLAY_CONFIG ((DMA_REQ_IIS << DMA_CMD_REQ_ID_POS) | \
DMA_CMD_RAM_TO_PER | DMA_CMD_SINGLE | \
DMA_CMD_WAIT_REQ | DMA_CMD_INTR)
/* DMA status cannot be viewed from outside code in control because that can
* clear the interrupt from outside the handler and prevent the handler from
* from being called. Split up transfers to a reasonable size that is good as
* a timer and peaking yet still keeps the FIQ count low.
*/
#if 1
void fiq_playback(void) ICODE_ATTR __attribute__((naked));
void fiq_playback(void)
#define MAX_DMA_CHUNK_SIZE (pcm_curr_sampr >> 6) /* ~1/256 seconds */
static inline void dma_tx_init(void)
{
/* r10 contains IISCONFIG address (set in crt0.S to minimise code in actual
* FIQ handler. r11 contains address of p (also set in crt0.S). Most other
* addresses we need are generated by using offsets with these two.
* r10 + 0x40 is IISFIFO_WR, and r10 + 0x0c is IISFIFO_CFG.
* r8 and r9 contains local copies of p and size respectively.
* r0-r3 and r12 is a working register.
*/
asm volatile (
"stmfd sp!, { r0-r4, lr } \n" /* stack scratch regs and lr */
"mov r4, #0 \n" /* Was the callback called? */
#if CONFIG_CPU == PP5002
"ldr r12, =0xcf001040 \n" /* Some magic from iPodLinux */
"ldr r12, [r12] \n"
#endif
"ldmia r11, { r8-r9 } \n" /* r8 = p, r9 = size */
"cmp r9, #0 \n" /* is size 0? */
"beq .more_data \n" /* if so, ask pcmbuf for more data */
#if SAMPLE_SIZE == 16
".check_fifo: \n"
"ldr r0, [r10, %[cfg]] \n" /* read IISFIFO_CFG to check FIFO status */
"and r0, r0, %[mask] \n" /* r0 = IIS_TX_FREE_COUNT << 16 (PP502x) */
"mov r1, r0, lsr #16 \n" /* number of free FIFO slots */
"cmp r1, r9, lsr #2 \n" /* number of words from source */
"movgt r1, r9, lsr #2 \n" /* r1 = amount of allowed loops */
"sub r9, r9, r1, lsl #2 \n" /* r1 words will be written in following loop */
"subs r1, r1, #2 \n"
".fifo_loop_2: \n"
"ldmgeia r8!, {r2, r12} \n" /* load four samples */
"strge r2 , [r10, %[wr]] \n" /* write sample 0-1 to IISFIFO_WR */
"strge r12, [r10, %[wr]] \n" /* write sample 2-3 to IISFIFO_WR */
"subges r1, r1, #2 \n" /* one more loop? */
"bge .fifo_loop_2 \n" /* yes, continue */
"tst r1, #1 \n" /* two samples (one word) left? */
"ldrne r12, [r8], #4 \n" /* load two samples */
"strne r12, [r10, %[wr]] \n" /* write sample 0-1 to IISFIFO_WR */
#elif SAMPLE_SIZE == 32
".check_fifo: \n"
"ldr r0, [r10, %[cfg]] \n" /* read IISFIFO_CFG to check FIFO status */
"and r0, r0, %[mask] \n" /* r0 = IIS_TX_FREE_COUNT << 23 (PP5002) */
"movs r1, r0, lsr #24 \n" /* number of free pairs of FIFO slots */
"beq .fifo_fill_complete \n" /* no complete pair? -> exit */
"cmp r1, r9, lsr #2 \n" /* number of words from source */
"movgt r1, r9, lsr #2 \n" /* r1 = amount of allowed loops */
"sub r9, r9, r1, lsl #2 \n" /* r1 words will be written in following loop */
".fifo_loop: \n"
"ldr r12, [r8], #4 \n" /* load two samples */
"mov r2 , r12, lsl #16 \n" /* put left sample at the top bits */
"str r2 , [r10, %[wr]] \n" /* write top sample to IISFIFO_WR */
"str r12, [r10, %[wr]] \n" /* write low sample to IISFIFO_WR*/
"subs r1, r1, #1 \n" /* one more loop? */
"bgt .fifo_loop \n" /* yes, continue */
".fifo_fill_complete: \n"
#endif
"cmp r4, #0 \n" /* If fill came after get_more... */
"beq .still_old_buffer \n"
"mov r4, #0 \n"
"ldr r2, =pcm_play_dma_started \n"
"ldrne r2, [r2] \n"
"cmp r2, #0 \n"
"movne lr, pc \n"
"bxne r2 \n"
".still_old_buffer: \n"
"cmp r9, #0 \n" /* either FIFO is full or source buffer is empty */
"bgt .exit \n" /* if source buffer is not empty, FIFO must be full */
".more_data: \n"
"mov r4, #1 \n" /* Remember we did this */
"ldr r2, =pcm_play_get_more_callback \n"
"mov r0, r11 \n" /* r0 = &p */
"add r1, r11, #4 \n" /* r1 = &size */
"mov lr, pc \n" /* call pcm_play_get_more_callback */
"bx r2 \n"
"ldmia r11, { r8-r9 } \n" /* load new p and size */
"cmp r9, #0 \n"
"bne .check_fifo \n" /* size != 0? refill */
".exit: \n" /* (r9=0 if stopping, look above) */
"stmia r11, { r8-r9 } \n" /* save p and size */
"ldmfd sp!, { r0-r4, lr } \n"
"subs pc, lr, #4 \n" /* FIQ specific return sequence */
".ltorg \n"
: /* These must only be integers! No regs */
: [mask]"i"(IIS_TX_FREE_MASK),
[cfg]"i"((int)&IISFIFO_CFG - (int)&IISCONFIG),
[wr]"i"((int)&IISFIFO_WR - (int)&IISCONFIG)
);
/* Enable DMA controller */
DMA_MASTER_CONTROL |= DMA_MASTER_CONTROL_EN;
/* FIQ priority for DMA */
CPU_INT_PRIORITY |= DMA_MASK;
/* Enable request?? Not setting or clearing everything doesn't seem to
* prevent it operating. Perhaps important for reliability (how requests
* are handled). */
DMA_REQ_STATUS |= 1ul << DMA_REQ_IIS;
DMA0_STATUS;
}
#else /* C version for reference */
void fiq_playback(void) __attribute__((interrupt ("FIQ"))) ICODE_ATTR;
/* NOTE: direct stack use forbidden by GCC stack handling bug for FIQ */
void fiq_playback(void)
static inline void dma_tx_setup(void)
{
bool new_buffer = false;
#if CONFIG_CPU == PP5002
inl(0xcf001040);
#endif
do {
while (dma_play_data.size > 0) {
if (IIS_TX_FREE_COUNT < 2) {
if (new_buffer) {
new_buffer = false;
pcm_play_dma_started_callback();
}
return;
}
#if SAMPLE_SIZE == 16
IISFIFO_WR = *dma_play_data.p16++;
#elif SAMPLE_SIZE == 32
IISFIFO_WR = *dma_play_data.p32++ << 16;
IISFIFO_WR = *dma_play_data.p32++ << 16;
#endif
dma_play_data.size -= 4;
}
if (new_buffer) {
new_buffer = false;
pcm_play_dma_started_callback();
}
/* p is empty, get some more data */
pcm_play_get_more_callback((void **)&dma_play_data.addr,
&dma_play_data.size);
new_buffer = true;
} while (dma_play_data.size);
/* No more data */
/* Setup DMA controller */
DMA0_PER_ADDR = (unsigned long)&IISFIFO_WR;
DMA0_FLAGS = DMA_FLAGS_UNK26;
DMA0_INCR = DMA_INCR_RANGE_FIXED | DMA_INCR_WIDTH_32BIT;
}
#endif /* ASM / C selection */
#endif /* CPU_PP502x */
/* For the locks, FIQ must be disabled because the handler manipulates
IISCONFIG and the operation is not atomic - dual core support
will require other measures */
void pcm_play_lock(void)
static inline unsigned long dma_tx_buf_prepare(const void *addr)
{
int status = disable_fiq_save();
unsigned long a = (unsigned long)addr;
if (++dma_play_data.locked == 1) {
#ifdef CPU_PP502x
CPU_INT_DIS = DMA_MASK;
#else
IIS_IRQTX_REG &= ~IIS_IRQTX;
#endif
if (a < UNCACHED_BASE_ADDR) {
/* VA in DRAM - writeback all data and get PA */
a = UNCACHED_ADDR(a);
commit_dcache();
}
restore_fiq(status);
return a;
}
void pcm_play_unlock(void)
static inline void dma_tx_start(bool begin)
{
int status = disable_fiq_save();
if (--dma_play_data.locked == 0 && dma_play_data.state != 0) {
#ifdef CPU_PP502x
CPU_INT_EN = DMA_MASK;
#else
IIS_IRQTX_REG |= IIS_IRQTX;
#endif
}
restore_fiq(status);
}
static void play_start_pcm(void)
{
fiq_function = fiq_playback;
#ifdef CPU_PP502x
/* Not at least MAX_DMA_CHUNK_SIZE left or there would be less than a
* FIFO's worth of data after this transfer? */
size_t size = MAX_DMA_CHUNK_SIZE;
/* Not at least MAX_DMA_CHUNK_SIZE left or there would be less
* than a FIFO's worth of data after this transfer? */
if (size + 16*4 > dma_play_data.size)
size = dma_play_data.size;
/* Set the new DMA values and activate channel */
DMA0_RAM_ADDR = dma_play_data.addr;
DMA0_CMD = DMA_PLAY_CONFIG | (size - 4) | DMA_CMD_START;
dma_play_data.state = 1;
#else
IISCONFIG &= ~IIS_TXFIFOEN; /* Stop transmitting */
/* Fill the FIFO or start when data is used up */
while (1) {
if (IIS_TX_FREE_COUNT < 2 || dma_play_data.size == 0) {
IISCONFIG |= IIS_TXFIFOEN; /* Start transmitting */
dma_play_data.state = 1;
return;
}
#if SAMPLE_SIZE == 16
IISFIFO_WR = *dma_play_data.p16++;
#elif SAMPLE_SIZE == 32
IISFIFO_WR = *dma_play_data.p32++ << 16;
IISFIFO_WR = *dma_play_data.p32++ << 16;
#endif
dma_play_data.size -= 4;
}
#endif
(void)begin;
}
static void play_stop_pcm(void)
static void dma_tx_stop(void)
{
#ifdef CPU_PP502x
unsigned long status = DMA0_STATUS; /* Snapshot- resume from this point */
unsigned long cmd = DMA0_CMD;
size_t size = 0;
@ -420,10 +188,281 @@ static void play_stop_pcm(void)
if (dma_play_data.size == 0)
dma_play_data.addr = 0; /* Entire buffer has completed. */
#else
}
static inline void dma_tx_lock(void)
{
CPU_INT_DIS = DMA_MASK;
}
static inline void dma_tx_unlock(void)
{
CPU_INT_EN = DMA_MASK;
}
/* NOTE: direct stack use forbidden by GCC stack handling bug for FIQ */
void fiq_playback(void) ICODE_ATTR __attribute__((interrupt("FIQ")));
void fiq_playback(void)
{
DMA0_STATUS; /* Clear any pending interrupt */
size_t size = (DMA0_CMD & 0xffff) + 4; /* Get size of trasfer that caused
this interrupt */
dma_play_data.addr += size;
dma_play_data.size -= size;
if (LIKELY(dma_play_data.size != 0)) {
/* Begin next segment */
dma_tx_start(false);
}
else if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &dma_play_data.p_r,
&dma_play_data.size)) {
dma_play_data.addr = dma_tx_buf_prepare(dma_play_data.p_r);
dma_tx_start(false);
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
}
#else /* !defined (CPU_PP502x) */
/* 32-bit, one left 32-bit sample followed by one right 32-bit sample */
#define SAMPLE_SIZE 32
static void dma_tx_init(void)
{
/* Set up banked registers for FIQ mode */
/* Use non-banked registers for scratch. */
register volatile void *iiscfg asm("r0") = &IISCONFIG;
register volatile void *dmapd asm("r1") = &dma_play_data;
asm volatile (
"mrs r2, cpsr \n" /* Save mode and interrupt status */
"msr cpsr_c, #0xd1 \n" /* Switch to FIQ mode */
"mov r8, #0 \n"
"mov r9, #0 \n"
"mov r10, %[iiscfg] \n"
"mov r11, %[dmapd] \n"
"msr cpsr_c, r2 \n"
:
: [iiscfg]"r"(iiscfg), [dmapd]"r"(dmapd)
: "r2");
/* FIQ priority for I2S */
CPU_INT_PRIORITY |= IIS_MASK;
CPU_INT_EN = IIS_MASK;
}
static inline void dma_tx_setup(void)
{
/* Nothing to do */
}
static inline unsigned long dma_tx_buf_prepare(const void *addr)
{
return (unsigned long)addr;
}
static inline void dma_tx_start(bool begin)
{
if (begin) {
IISCONFIG &= ~IIS_TXFIFOEN; /* Stop transmitting */
}
/* Fill the FIFO or start when data is used up */
while (IIS_TX_FREE_COUNT >= 2 && dma_play_data.size != 0) {
IISFIFO_WRH = *dma_play_data.p32++;
IISFIFO_WRH = *dma_play_data.p32++;
dma_play_data.size -= 4;
}
if (begin) {
IISCONFIG |= IIS_TXFIFOEN; /* Start transmitting */
}
}
static inline void dma_tx_stop(void)
{
/* Disable TX interrupt */
IIS_IRQTX_REG &= ~IIS_IRQTX;
#endif
}
static inline void dma_tx_lock(void)
{
IIS_IRQTX_REG &= ~IIS_IRQTX;
}
static inline void dma_tx_unlock(void)
{
IIS_IRQTX_REG |= IIS_IRQTX;
}
/* ASM optimised FIQ handler. Checks for the minimum allowed loop cycles by
* evalutation of free IISFIFO-slots against available source buffer words.
* Through this it is possible to move the check for IIS_TX_FREE_COUNT outside
* the loop and do some further optimization. Right after the loops (source
* buffer -> IISFIFO) are done we need to check whether we have to exit FIQ
* handler (this must be done, if all free FIFO slots were filled) or we will
* have to get some new source data. Important information kept from former
* ASM implementation (not used anymore): GCC fails to make use of the fact
* that FIQ mode has registers r8-r14 banked, and so does not need to be saved.
* This routine uses only these registers, and so will never touch the stack
* unless it actually needs to do so when calling pcm_play_dma_complete_callback.
* C version is still included below for reference and testing.
*/
#if 1
void fiq_playback(void) ICODE_ATTR __attribute__((naked));
void fiq_playback(void)
{
/* r8 and r9 contains local copies of p and size respectively.
* r10 contains IISCONFIG address (set during PCM init to minimize code in
* FIQ handler.Most other addresses we need are generated by using offsets
* from this.
* r10 + 0x40 is IISFIFO_WR, and r10 + 0x1c is IISFIFO_CFG.
* r11 contains address of dma_play_data
* r12 and r14 are working registers.
*
* Divided into two blocks: one where no external calls are needed and
* one where external callbacks are made
*/
asm volatile (
/* No external calls */
"sub lr, lr, #4 \n" /* Prepare return address */
"stmfd sp!, { lr } \n" /* stack lr so we can use it */
"ldr r12, =0xcf001040 \n" /* Some magic from iPodLinux ... */
"ldr r12, [r12] \n" /* ... actually a DMA INT ack? */
"ldmia r11, { r8-r9 } \n" /* r8 = p, r9 = size */
"cmp r9, #0 \n" /* is size 0? */
"beq 1f \n" /* if so, ask PCM for more data */
"ldr r14, [r10, #0x1c] \n" /* read IISFIFO_CFG to check FIFO status */
"and r14, r14, #(0xe<<23) \n" /* r14 = (IIS_TX_FREE_COUNT & ~1) << 23 */
"cmp r9, r14, lsr #22 \n" /* number of words from source */
"movlo r14, r9, lsl #22 \n" /* r14 = amount of allowed loops */
"sub r9, r9, r14, lsr #22 \n" /* r14 words will be written in loop */
"0: \n"
"ldr r12, [r8], #4 \n" /* load left-right pair */
"subs r14, r14, #(0x2<<23) \n" /* one more loop? ... */
"strh r12, [r10, #0x40] \n" /* left sample to IISFIFO_WR */
"mov r12, r12, lsr #16 \n" /* put right sample in bottom 16 bits */
"strh r12, [r10, #0x40] \n" /* right sample to IISFIFO_WR */
"bhi 0b \n" /* ... yes, continue */
"cmp r9, #0 \n" /* either FIFO full or size empty? */
"stmneia r11, { r8-r9 } \n" /* save p and size, if not empty */
"ldmnefd sp!, { pc }^ \n" /* RFE if not empty */
/* Making external calls */
"1: \n"
"stmfd sp!, { r0-r3 } \n" /* Must save volatiles */
"2: \n"
"mov r0, %0 \n" /* r0 = status */
"mov r1, r11 \n" /* r1 = &dma_play_data.p_r */
"add r2, r11, #4 \n" /* r2 = &dma_play_data.size */
"ldr r3, =pcm_play_dma_complete_callback \n"
"mov lr, pc \n" /* long call (not in same section) */
"bx r3 \n"
"cmp r0, #0 \n" /* more data? */
"ldmeqfd sp!, { r0-r3, pc }^ \n" /* no? -> exit */
"ldr r14, [r10, #0x1c] \n" /* read IISFIFO_CFG to check FIFO status */
"ands r14, r14, #(0xe<<23) \n" /* r14 = (IIS_TX_FREE_COUNT & ~1) << 23 */
"bne 4f \n"
"3: \n" /* inform of started status if registered */
"ldr r1, =pcm_play_status_callback \n"
"ldr r1, [r1] \n"
"cmp r1, #0 \n"
"movne r0, %1 \n"
"movne lr, pc \n"
"bxne r1 \n"
"ldmfd sp!, { r0-r3, pc }^ \n" /* exit */
"4: \n"
"ldmia r11, { r8-r9 } \n" /* load new p and size */
"cmp r9, r14, lsr #22 \n" /* number of words from source */
"movlo r14, r9, lsl #22 \n" /* r14 = amount of allowed loops */
"sub r9, r9, r14, lsr #22 \n" /* r14 words will be written in loop */
"0: \n"
"ldr r12, [r8], #4 \n" /* load left-right pair */
"subs r14, r14, #(0x2<<23) \n" /* one more loop? ... */
"strh r12, [r10, #0x40] \n" /* left sample to IISFIFO_WR */
"mov r12, r12, lsr #16 \n" /* put right sample in bottom 16 bits */
"strh r12, [r10, #0x40] \n" /* right sample to IISFIFO_WR */
"bhi 0b \n" /* ... yes, continue */
"stmia r11, { r8-r9 } \n" /* save p and size */
"cmp r9, #0 \n" /* used up data in FIFO fill? */
"bne 3b \n" /* no? -> go return */
"b 2b \n" /* yes -> get even more */
".ltorg \n"
: /* These must only be integers! No regs */
: "i"(PCM_DMAST_OK), "i"(PCM_DMAST_STARTED));
}
#else /* C version for reference */
/* NOTE: direct stack use forbidden by GCC stack handling bug for FIQ */
void fiq_playback(void) ICODE_ATTR __attribute__((interrupt ("FIQ")));
void fiq_playback(void)
{
inl(0xcf001040);
if (LIKELY(dma_play_data.size != 0)) {
dma_tx_start(false);
if (dma_play_data.size != 0) {
/* Still more data */
return;
}
}
while (pcm_play_dma_complete_callback(PCM_DMAST_OK, &dma_play_data.p_r,
&dma_play_data.size)) {
dma_tx_start(false);
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
if (dma_play_data.size != 0) {
return;
}
}
}
#endif /* ASM / C selection */
#endif /* CPU_PP502x */
/* For the locks, FIQ must be disabled because the handler manipulates
IISCONFIG and the operation is not atomic - dual core support
will require other measures */
void pcm_play_lock(void)
{
int status = disable_fiq_save();
if (++dma_play_data.locked == 1) {
dma_tx_lock();
}
restore_fiq(status);
}
void pcm_play_unlock(void)
{
int status = disable_fiq_save();
if (--dma_play_data.locked == 0 && dma_play_data.state != 0) {
dma_tx_unlock();
}
restore_fiq(status);
}
static void play_start_pcm(void)
{
fiq_function = fiq_playback;
dma_play_data.state = 1;
dma_tx_start(true);
}
static void play_stop_pcm(void)
{
dma_tx_stop();
/* Wait for FIFO to empty */
while (!IIS_TX_IS_EMPTY);
@ -433,30 +472,17 @@ static void play_stop_pcm(void)
void pcm_play_dma_start(const void *addr, size_t size)
{
pcm_play_dma_stop();
#if NUM_CORES > 1
/* This will become more important later - and different ! */
dma_play_data.core = processor_id(); /* save initiating core */
#endif
pcm_play_dma_stop();
dma_tx_setup();
#ifdef CPU_PP502x
if ((unsigned long)addr < UNCACHED_BASE_ADDR) {
/* Flush any pending cache writes */
addr = UNCACHED_ADDR(addr);
commit_dcache();
}
dma_play_data.addr = (unsigned long)addr;
dma_play_data.addr = dma_tx_buf_prepare(addr);
dma_play_data.size = size;
DMA0_PER_ADDR = (unsigned long)&IISFIFO_WR;
DMA0_FLAGS = DMA_FLAGS_UNK26;
DMA0_INCR = DMA_INCR_RANGE_FIXED | DMA_INCR_WIDTH_32BIT;
#else
dma_play_data.addr = (unsigned long)addr;
dma_play_data.size = size;
#endif
play_start_pcm();
}
@ -490,39 +516,7 @@ void pcm_play_dma_init(void)
/* Initialize default register values. */
audiohw_init();
#ifdef CPU_PP502x
/* Enable DMA controller */
DMA_MASTER_CONTROL |= DMA_MASTER_CONTROL_EN;
/* FIQ priority for DMA */
CPU_INT_PRIORITY |= DMA_MASK;
/* Enable request?? Not setting or clearing everything doesn't seem to
* prevent it operating. Perhaps important for reliability (how requests
* are handled). */
DMA_REQ_STATUS |= 1ul << DMA_REQ_IIS;
DMA0_STATUS;
#else
/* Set up banked registers for FIQ mode */
/* Use non-banked registers for scratch. */
register volatile void *iiscfg asm("r0") = &IISCONFIG;
register volatile void *dmapd asm("r1") = &dma_play_data;
asm volatile (
"mrs r2, cpsr \n" /* Save mode and interrupt status */
"msr cpsr_c, #0xd1 \n" /* Switch to FIQ mode */
"mov r8, #0 \n"
"mov r9, #0 \n"
"mov r10, %[iiscfg] \n"
"mov r11, %[dmapd] \n"
"msr cpsr_c, r2 \n"
:
: [iiscfg]"r"(iiscfg), [dmapd]"r"(dmapd)
: "r2");
/* FIQ priority for I2S */
CPU_INT_PRIORITY |= IIS_MASK;
CPU_INT_EN = IIS_MASK;
#endif
dma_tx_init();
IISCONFIG |= IIS_TXFIFOEN;
}
@ -649,11 +643,15 @@ void fiq_record(void)
}
}
pcm_rec_more_ready_callback(0, (void *)&dma_rec_data.addr,
&dma_rec_data.size);
if (pcm_rec_dma_complete_callback(PCM_DMAST_OK, &dma_rec_data.p_w,
&dma_rec_data.size))
{
pcm_rec_dma_status_callback(PCM_DMAST_STARTED);
}
}
#else
#else /* !(SANSA_C200 || SANSA_E200) */
void fiq_record(void)
{
while (dma_rec_data.size > 0) {
@ -664,17 +662,20 @@ void fiq_record(void)
#if SAMPLE_SIZE == 16
*dma_rec_data.p16++ = IISFIFO_RD;
#elif SAMPLE_SIZE == 32
*dma_rec_data.p32++ = IISFIFO_RD >> 16;
*dma_rec_data.p32++ = IISFIFO_RD >> 16;
*dma_rec_data.p32++ = IISFIFO_RDH;
*dma_rec_data.p32++ = IISFIFO_RDH;
#endif
dma_rec_data.size -= 4;
}
pcm_rec_more_ready_callback(0, (void *)&dma_rec_data.addr,
&dma_rec_data.size);
if (pcm_rec_dma_complete_callback(PCM_DMAST_OK, &dma_rec_data.p_w,
&dma_rec_data.size))
{
pcm_rec_dma_status_callback(PCM_DMAST_STARTED);
}
}
#endif /* SANSA_E200 */
#endif /* SANSA_C200 || SANSA_E200 */
void pcm_rec_dma_stop(void)
{

8
firmware/target/arm/rk27xx/pcm-rk27xx.c
View File

@ -273,15 +273,13 @@ size_t pcm_get_bytes_waiting(void)
/* audio DMA ISR called when chunk from callers buffer has been transfered */
void INT_HDMA(void)
{
void *start;
const void *start;
size_t size;
pcm_play_get_more_callback(&start, &size);
if (size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
{
hdma_i2s_transfer(start, size);
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
}

8
firmware/target/arm/s3c2440/gigabeat-fx/pcm-meg-fx.c
View File

@ -215,16 +215,14 @@ void pcm_play_dma_pause(bool pause)
void fiq_handler(void)
{
static void *start;
static const void *start;
static size_t size;
/* clear any pending interrupt */
SRCPND = DMA2_MASK;
/* Buffer empty. Try to get more. */
pcm_play_get_more_callback(&start, &size);
if (size == 0)
if (!pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
return;
/* Flush any pending cache writes */
@ -237,7 +235,7 @@ void fiq_handler(void)
/* Re-Activate the channel */
DMASKTRIG2 = 0x2;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
size_t pcm_get_bytes_waiting(void)

8
firmware/target/arm/s3c2440/mini2440/pcm-mini2440.c
View File

@ -255,16 +255,14 @@ void pcm_play_dma_pause(bool pause)
void fiq_handler(void)
{
static void *start;
static const void *start;
static size_t size;
/* clear any pending interrupt */
SRCPND = DMA2_MASK;
/* Buffer empty. Try to get more. */
pcm_play_get_more_callback(&start, &size);
if (size == 0)
if (!pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
return;
/* Flush any pending cache writes */
@ -277,7 +275,7 @@ void fiq_handler(void)
/* Re-Activate the channel */
DMASKTRIG2 = 0x2;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
size_t pcm_get_bytes_waiting(void)

9
firmware/target/arm/s5l8700/pcm-s5l8700.c
View File

@ -116,9 +116,10 @@ void INT_DMA(void)
{
if (!nextsize)
{
pcm_play_get_more_callback((void**)&nextbuf, &nextsize);
if (!nextsize) break;
new_buffer = true;
new_buffer = pcm_play_dma_complete_callback(PCM_DMAST_OK,
(const void**)&nextbuf, &nextsize);
if (!new_buffer)
break;
}
queuedsize = MIN(sizeof(dblbuf), nextsize / 2);
nextsize -= queuedsize;
@ -133,7 +134,7 @@ void INT_DMA(void)
if (new_buffer)
{
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
new_buffer = false;
}
}

4
firmware/target/arm/s5l8702/pcm-s5l8702.c
View File

@ -65,7 +65,7 @@ void INT_DMAC0C0(void)
DMAC0INTTCCLR = 1;
if (!pcm_remaining)
{
pcm_play_get_more_callback((void**)&dataptr, &pcm_remaining);
pcm_play_dma_complete_callback((const void**)&dataptr, &pcm_remaining);
pcm_chunksize = pcm_remaining;
}
if (!pcm_remaining)
@ -115,7 +115,7 @@ void INT_DMAC0C0(void)
}
else DMAC0C0NEXTLLI = pcm_lli;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
void pcm_play_dma_start(const void* addr, size_t size)

8
firmware/target/arm/tms320dm320/mrobe-500/pcm-mr500.c
View File

@ -33,7 +33,7 @@
/* This is global to save some latency when pcm_play_dma_get_peak_buffer is
* called.
*/
static void *start;
static const void *start;
void pcm_play_dma_postinit(void)
{
@ -164,9 +164,7 @@ void DSPHINT(void)
case MSG_REFILL:
/* Buffer empty. Try to get more. */
pcm_play_get_more_callback(&start, &size);
if (size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
{
unsigned long sdem_addr=(unsigned long)start - CONFIG_SDRAM_START;
/* Flush any pending cache writes */
@ -180,7 +178,7 @@ void DSPHINT(void)
DEBUGF("pcm_sdram at 0x%08lx, sdem_addr 0x%08lx",
(unsigned long)start, (unsigned long)sdem_addr);
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
break;

8
firmware/target/arm/tms320dm320/sansa-connect/pcm-sansaconnect.c
View File

@ -34,7 +34,7 @@
/* This is global to save some latency when pcm_play_dma_get_peak_buffer is
* called.
*/
static void *start;
static const void *start;
static int dma_channel;
void pcm_play_dma_postinit(void)
@ -171,9 +171,7 @@ void DSPHINT(void)
case MSG_REFILL:
/* Buffer empty. Try to get more. */
pcm_play_get_more_callback(&start, &size);
if (size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
{
unsigned long sdem_addr=(unsigned long)start - CONFIG_SDRAM_START;
/* Flush any pending cache writes */
@ -187,7 +185,7 @@ void DSPHINT(void)
DEBUGF("pcm_sdram at 0x%08lx, sdem_addr 0x%08lx",
(unsigned long)start, (unsigned long)sdem_addr);
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
break;

36
firmware/target/coldfire/pcm-coldfire.c
View File

@ -294,8 +294,6 @@ void DMA0(void) __attribute__ ((interrupt_handler, section(".icode")));
void DMA0(void)
{
unsigned long res = DSR0;
void *start;
size_t size;
and_l(~(DMA_EEXT | DMA_INT), &DCR0); /* per request and int OFF */
DSR0 = 1; /* Clear interrupt and errors */
@ -311,17 +309,18 @@ void DMA0(void)
#endif
}
/* Force stop on error */
pcm_play_get_more_callback((res & 0x70) ? NULL : &start, &size);
const void *addr;
size_t size;
if (size != 0)
if (pcm_play_dma_complete_callback((res & 0x70) ?
PCM_DMAST_ERR_DMA : PCM_DMAST_OK,
&addr, &size))
{
SAR0 = (unsigned long)start; /* Source address */
BCR0 = size; /* Bytes to transfer */
SAR0 = (unsigned long)addr; /* Source address */
BCR0 = (unsigned long)size; /* Bytes to transfer */
or_l(DMA_EEXT | DMA_INT, &DCR0); /* per request and int ON */
/* Call buffer callback */
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
/* else inished playing */
} /* DMA0 */
@ -368,7 +367,7 @@ void pcm_rec_unlock(void)
void pcm_rec_dma_start(void *addr, size_t size)
{
/* stop any DMA in progress */
/* Stop any DMA in progress */
pcm_rec_dma_stop();
and_l(~PDIR2_FIFO_RESET, &DATAINCONTROL);
@ -430,16 +429,14 @@ void DMA1(void) __attribute__ ((interrupt_handler, section(".icode")));
void DMA1(void)
{
unsigned long res = DSR1;
int status = 0;
void *start;
size_t size;
enum pcm_dma_status status = PCM_DMAST_OK;
and_l(~(DMA_EEXT | DMA_INT), &DCR1); /* per request and int OFF */
DSR1 = 1; /* Clear interrupt and errors */
if (res & 0x70)
{
status = DMA_REC_ERROR_DMA;
status = PCM_DMAST_ERR_DMA;
logf("DMA1 err: %02x", res);
#if 0
logf(" SAR1: %08x", SAR1);
@ -456,19 +453,22 @@ void DMA1(void)
* Ignore valnogood since several sources don't set it properly. */
/* clear: ebu1cnew, symbolerr, parityerr */
INTERRUPTCLEAR = (1 << 25) | (1 << 23) | (1 << 22);
status = DMA_REC_ERROR_SPDIF;
status = PCM_DMAST_ERR_SPDIF;
logf("spdif err");
}
#endif
/* Inform PCM we have more data (or error) */
pcm_rec_more_ready_callback(status, &start, &size);
void *addr;
size_t size;
if (size != 0)
if (pcm_rec_dma_complete_callback(status, &addr, &size))
{
DAR1 = (unsigned long)start; /* Destination address */
DAR1 = (unsigned long)addr; /* Destination address */
BCR1 = (unsigned long)size; /* Bytes to transfer */
or_l(DMA_EEXT | DMA_INT, &DCR1); /* per request and int ON */
pcm_rec_dma_status_callback(PCM_DMAST_STARTED);
}
} /* DMA1 */

16
firmware/target/hosted/android/pcm-android.c
View File

@ -80,8 +80,8 @@ Java_org_rockbox_RockboxPCM_nativeWrite(JNIEnv *env, jobject this,
if (!pcm_data_size) /* get some initial data */
{
new_buffer = true;
pcm_play_get_more_callback((void**) &pcm_data_start, &pcm_data_size);
new_buffer = pcm_play_dma_complete_callback(PCM_DMAST_OK,
(const void**)&pcm_data_start, &pcm_data_size);
}
while(left > 0 && pcm_data_size)
@ -99,7 +99,7 @@ Java_org_rockbox_RockboxPCM_nativeWrite(JNIEnv *env, jobject this,
if (new_buffer)
{
new_buffer = false;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
/* NOTE: might need to release the mutex and sleep here if the
buffer is shorter than the required buffer (like pcm-sdl.c) to
@ -114,15 +114,15 @@ Java_org_rockbox_RockboxPCM_nativeWrite(JNIEnv *env, jobject this,
if (pcm_data_size == 0) /* need new data */
{
new_buffer = true;
pcm_play_get_more_callback((void**)&pcm_data_start, &pcm_data_size);
new_buffer = pcm_play_dma_complete_callback(PCM_DMAST_OK,
(const void**)&pcm_data_start, &pcm_data_size);
}
else /* increment data pointer and feed more */
pcm_data_start += transfer_size;
}
if (new_buffer && pcm_data_size)
pcm_play_dma_started_callback();
if (new_buffer)
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
unlock_audio();
return max_size - left;
@ -154,7 +154,7 @@ void pcm_play_dma_start(const void *addr, size_t size)
void pcm_play_dma_stop(void)
{
/* NOTE: due to how pcm_play_get_more_callback() works, this is
/* NOTE: due to how pcm_play_dma_complete_callback() works, this is
* possibly called from nativeWrite(), i.e. another (host) thread
* => need to discover the appropriate JNIEnv* */
JNIEnv* env = getJavaEnvironment();

7
firmware/target/hosted/maemo/pcm-gstreamer.c
View File

@ -189,9 +189,8 @@ static void feed_data(GstElement * appsrc, guint size_hint, void *unused)
from inside gstreamer's stream thread as it will deadlock */
inside_feed_data = 1;
pcm_play_get_more_callback((void **)&pcm_data, &pcm_data_size);
if (pcm_data_size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, (const void **)&pcm_data,
&pcm_data_size))
{
GstBuffer *buffer = gst_buffer_new ();
GstFlowReturn ret;
@ -205,7 +204,7 @@ static void feed_data(GstElement * appsrc, guint size_hint, void *unused)
if (ret != 0)
DEBUGF("push-buffer error result: %d\n", ret);
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
} else
{
DEBUGF("feed_data: No Data.\n");

8
firmware/target/hosted/pcm-alsa.c
View File

@ -223,9 +223,11 @@ static bool fill_frames(void)
if (!pcm_size)
{
new_buffer = true;
pcm_play_get_more_callback((void **)&pcm_data, &pcm_size);
if (!pcm_size || !pcm_data)
if (!pcm_play_dma_complete_callback(PCM_DMAST_OK,
(const void **)&pcm_data, &pcm_size))
{
return false;
}
}
copy_n = MIN((ssize_t)pcm_size, frames_left*4);
memcpy(&frames[2*(period_size-frames_left)], pcm_data, copy_n);
@ -237,7 +239,7 @@ static bool fill_frames(void)
if (new_buffer)
{
new_buffer = false;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
}
return true;

80
firmware/target/hosted/sdl/pcm-sdl.c
View File

@ -56,7 +56,7 @@ static int sim_volume = 0;
#if CONFIG_CODEC == SWCODEC
static int cvt_status = -1;
static Uint8* pcm_data;
static const Uint8* pcm_data;
static size_t pcm_data_size;
static size_t pcm_sample_bytes;
static size_t pcm_channel_bytes;
@ -109,7 +109,7 @@ void pcm_play_dma_start(const void *addr, size_t size)
{
pcm_dma_apply_settings_nolock();
pcm_data = (Uint8 *) addr;
pcm_data = addr;
pcm_data_size = size;
SDL_PauseAudio(0);
@ -245,48 +245,48 @@ static void sdl_audio_callback(struct pcm_udata *udata, Uint8 *stream, int len)
/* Audio card wants more? Get some more then. */
while (len > 0) {
new_buffer = true;
pcm_play_get_more_callback((void **)&pcm_data, &pcm_data_size);
start:
if (pcm_data_size != 0) {
udata->num_in = pcm_data_size / pcm_sample_bytes;
udata->num_out = len / pcm_sample_bytes;
new_buffer = pcm_play_dma_complete_callback(PCM_DMAST_OK,
(const void **)&pcm_data, &pcm_data_size);
write_to_soundcard(udata);
udata->num_in *= pcm_sample_bytes;
udata->num_out *= pcm_sample_bytes;
if (new_buffer)
{
new_buffer = false;
pcm_play_dma_started_callback();
if ((size_t)len > udata->num_out)
{
int delay = pcm_data_size*250 / pcm_sampr - 1;
if (delay > 0)
{
SDL_UnlockMutex(audio_lock);
SDL_Delay(delay);
SDL_LockMutex(audio_lock);
if (!pcm_is_playing())
break;
}
}
}
pcm_data += udata->num_in;
pcm_data_size -= udata->num_in;
udata->stream += udata->num_out;
len -= udata->num_out;
} else {
if (!new_buffer) {
DEBUGF("sdl_audio_callback: No Data.\n");
break;
}
start:
udata->num_in = pcm_data_size / pcm_sample_bytes;
udata->num_out = len / pcm_sample_bytes;
write_to_soundcard(udata);
udata->num_in *= pcm_sample_bytes;
udata->num_out *= pcm_sample_bytes;
if (new_buffer)
{
new_buffer = false;
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
if ((size_t)len > udata->num_out)
{
int delay = pcm_data_size*250 / pcm_sampr - 1;
if (delay > 0)
{
SDL_UnlockMutex(audio_lock);
SDL_Delay(delay);
SDL_LockMutex(audio_lock);
if (!pcm_is_playing())
break;
}
}
}
pcm_data += udata->num_in;
pcm_data_size -= udata->num_in;
udata->stream += udata->num_out;
len -= udata->num_out;
}
SDL_UnlockMutex(audio_lock);

12
firmware/target/mips/ingenic_jz47xx/pcm-jz4740.c
View File

@ -63,7 +63,7 @@ void pcm_dma_apply_settings(void)
audiohw_set_frequency(pcm_sampr);
}
static void* playback_address;
static const void* playback_address;
static inline void set_dma(const void *addr, size_t size)
{
int burst_size;
@ -96,21 +96,19 @@ static inline void set_dma(const void *addr, size_t size)
REG_DMAC_DRSR(DMA_AIC_TX_CHANNEL) = DMAC_DRSR_RS_AICOUT;
REG_DMAC_DCMD(DMA_AIC_TX_CHANNEL) = (DMAC_DCMD_SAI | DMAC_DCMD_SWDH_32 | burst_size | DMAC_DCMD_DWDH_16 | DMAC_DCMD_TIE);
playback_address = (void*)addr;
playback_address = addr;
}
static inline void play_dma_callback(void)
{
void *start;
const void *start;
size_t size;
pcm_play_get_more_callback(&start, &size);
if (size != 0)
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
{
set_dma(start, size);
REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN;
pcm_play_dma_started_callback();
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
}
}