oysteikt
/
mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

pcm_utils: no CamelCase 

Renamed all functions which were still in CamelCase.
This commit is contained in:
Max Kellermann 2008-10-21 22:53:13 +02:00
parent fb416964d6
commit ca6e613a7f
5 changed files with 89 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/decoder_api.c
View File

@ -171,7 +171,7 @@ decoder_data(struct decoder *decoder,
data = dataIn;
datalen = dataInLen;
} else {
datalen = pcm_sizeOfConvBuffer(&(dc.audioFormat), dataInLen,
datalen = pcm_convert_size(&(dc.audioFormat), dataInLen,
&(ob.audioFormat));
if (datalen > convBufferLen) {
if (convBuffer != NULL)
@ -180,7 +180,7 @@ decoder_data(struct decoder *decoder,
convBufferLen = datalen;
}
data = convBuffer;
datalen = pcm_convertAudioFormat(&(dc.audioFormat), dataIn,
datalen = pcm_convert(&(dc.audioFormat), dataIn,
dataInLen, &(ob.audioFormat),
data, &decoder->conv_state);
}

4
src/output_thread.c
View File

@ -33,7 +33,7 @@ static void ao_command_finished(struct audio_output *ao)
static void convertAudioFormat(struct audio_output *audioOutput,
const char **chunkArgPtr, size_t *sizeArgPtr)
{
size_t size = pcm_sizeOfConvBuffer(&(audioOutput->inAudioFormat),
size_t size = pcm_convert_size(&(audioOutput->inAudioFormat),
*sizeArgPtr,
&(audioOutput->outAudioFormat));
@ -44,7 +44,7 @@ static void convertAudioFormat(struct audio_output *audioOutput,
audioOutput->convBufferLen = size;
}
*sizeArgPtr = pcm_convertAudioFormat(&(audioOutput->inAudioFormat),
*sizeArgPtr = pcm_convert(&(audioOutput->inAudioFormat),
*chunkArgPtr, *sizeArgPtr,
&(audioOutput->outAudioFormat),
audioOutput->convBuffer,

89
src/pcm_utils.c
View File

@ -85,7 +85,7 @@ pcm_volume_change_24(int32_t *buffer, unsigned num_samples, int volume)
}
}
void pcm_volumeChange(char *buffer, int bufferSize,
void pcm_volume(char *buffer, int bufferSize,
const struct audio_format *format,
int volume)
{
@ -113,7 +113,7 @@ void pcm_volumeChange(char *buffer, int bufferSize,
break;
default:
FATAL("%u bits not supported by pcm_volumeChange!\n",
FATAL("%u bits not supported by pcm_volume!\n",
format->bits);
}
}
@ -206,7 +206,7 @@ void pcm_mix(char *buffer1, const char *buffer2, size_t size,
}
#ifdef HAVE_LIBSAMPLERATE
static int pcm_getSampleRateConverter(void)
static int pcm_resample_get_converter(void)
{
const char *conf = getConfigParamValue(CONF_SAMPLERATE_CONVERTER);
long convalgo;
@ -244,8 +244,8 @@ out:
#endif
#ifdef HAVE_LIBSAMPLERATE
static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
const int16_t *inBuffer, size_t inSize,
static size_t pcm_resample(int8_t channels, uint32_t inSampleRate,
const int16_t *src, size_t src_size,
uint32_t outSampleRate, int16_t *outBuffer,
size_t outSize,
struct pcm_convert_state *convState)
@ -257,7 +257,7 @@ static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
int error;
if (convalgo < 0)
convalgo = pcm_getSampleRateConverter();
convalgo = pcm_resample_get_converter();
/* (re)set the state/ratio if the in or out format changed */
if ((channels != convState->lastChannels) ||
@ -289,7 +289,7 @@ static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
if (convState->error)
return 0;
data->input_frames = inSize / 2 / channels;
data->input_frames = src_size / 2 / channels;
dataInSize = data->input_frames * sizeof(float) * channels;
if (dataInSize > convState->dataInSize) {
convState->dataInSize = dataInSize;
@ -303,7 +303,7 @@ static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
data->data_out = xrealloc(data->data_out, dataOutSize);
}
src_short_to_float_array((const short *)inBuffer, data->data_in,
src_short_to_float_array((const short *)src, data->data_in,
data->input_frames * channels);
error = src_process(convState->state, data);
@ -321,16 +321,15 @@ static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
}
#else /* !HAVE_LIBSAMPLERATE */
/* resampling code blatantly ripped from ESD */
static size_t pcm_convertSampleRate(int8_t channels, uint32_t inSampleRate,
const int16_t *inBuffer,
mpd_unused size_t inSize,
static size_t pcm_resample(int8_t channels, uint32_t inSampleRate,
const int16_t *src, mpd_unused size_t src_size,
uint32_t outSampleRate, char *outBuffer,
size_t outSize,
mpd_unused struct pcm_convert_state *convState)
{
uint32_t rd_dat = 0;
uint32_t wr_dat = 0;
const int16_t *in = (const int16_t *)inBuffer;
const int16_t *in = (const int16_t *)src;
int16_t *out = (int16_t *)outBuffer;
uint32_t nlen = outSize / 2;
int16_t lsample, rsample;
@ -410,7 +409,7 @@ pcm_convert_channels_n_to_2(int16_t *dest,
}
static const int16_t *
pcm_convertChannels(int8_t dest_channels,
pcm_convert_channels(int8_t dest_channels,
int8_t src_channels, const int16_t *src,
size_t src_size, size_t *dest_size_r)
{
@ -463,8 +462,8 @@ pcm_convert_24_to_16(int16_t *out, const int32_t *in,
}
static const int16_t *
pcm_convertTo16bit(uint8_t bits, const void *inBuffer,
size_t inSize, size_t *outSize)
pcm_convert_to_16(uint8_t bits, const void *src,
size_t src_size, size_t *dest_size_r)
{
static int16_t *buf;
static size_t len;
@ -472,32 +471,32 @@ pcm_convertTo16bit(uint8_t bits, const void *inBuffer,
switch (bits) {
case 8:
num_samples = inSize;
*outSize = inSize << 1;
if (*outSize > len) {
len = *outSize;
num_samples = src_size;
*dest_size_r = src_size << 1;
if (*dest_size_r > len) {
len = *dest_size_r;
buf = xrealloc(buf, len);
}
pcm_convert_8_to_16((int16_t *)buf,
(const int8_t *)inBuffer,
(const int8_t *)src,
num_samples);
return buf;
case 16:
*outSize = inSize;
return inBuffer;
*dest_size_r = src_size;
return src;
case 24:
num_samples = inSize / 4;
*outSize = num_samples * 2;
if (*outSize > len) {
len = *outSize;
num_samples = src_size / 4;
*dest_size_r = num_samples * 2;
if (*dest_size_r > len) {
len = *dest_size_r;
buf = xrealloc(buf, len);
}
pcm_convert_24_to_16((int16_t *)buf,
(const int32_t *)inBuffer,
(const int32_t *)src,
num_samples);
return buf;
}
@ -507,25 +506,25 @@ pcm_convertTo16bit(uint8_t bits, const void *inBuffer,
}
/* outFormat bits must be 16 and channels must be 1 or 2! */
size_t pcm_convertAudioFormat(const struct audio_format *inFormat,
const char *inBuffer, size_t inSize,
size_t pcm_convert(const struct audio_format *inFormat,
const char *src, size_t src_size,
const struct audio_format *outFormat,
char *outBuffer,
struct pcm_convert_state *convState)
{
const int16_t *buf;
size_t len = 0;
size_t outSize = pcm_sizeOfConvBuffer(inFormat, inSize, outFormat);
size_t dest_size = pcm_convert_size(inFormat, src_size, outFormat);
assert(outFormat->bits == 16);
/* everything else supports 16 bit only, so convert to that first */
buf = pcm_convertTo16bit(inFormat->bits, inBuffer, inSize, &len);
buf = pcm_convert_to_16(inFormat->bits, src, src_size, &len);
if (!buf)
exit(EXIT_FAILURE);
if (inFormat->channels != outFormat->channels) {
buf = pcm_convertChannels(outFormat->channels,
buf = pcm_convert_channels(outFormat->channels,
inFormat->channels,
buf, len, &len);
if (!buf)
@ -533,14 +532,14 @@ size_t pcm_convertAudioFormat(const struct audio_format *inFormat,
}
if (inFormat->sample_rate == outFormat->sample_rate) {
assert(outSize >= len);
assert(dest_size >= len);
memcpy(outBuffer, buf, len);
} else {
len = pcm_convertSampleRate(outFormat->channels,
len = pcm_resample(outFormat->channels,
inFormat->sample_rate, buf, len,
outFormat->sample_rate,
(int16_t*)outBuffer,
outSize, convState);
dest_size, convState);
if (len == 0)
exit(EXIT_FAILURE);
}
@ -548,35 +547,35 @@ size_t pcm_convertAudioFormat(const struct audio_format *inFormat,
return len;
}
size_t pcm_sizeOfConvBuffer(const struct audio_format *inFormat, size_t inSize,
size_t pcm_convert_size(const struct audio_format *inFormat, size_t src_size,
const struct audio_format *outFormat)
{
const double ratio = (double)outFormat->sample_rate /
(double)inFormat->sample_rate;
const int shift = 2 * outFormat->channels;
size_t outSize = inSize;
size_t dest_size = src_size;
switch (inFormat->bits) {
case 8:
outSize <<= 1;
dest_size <<= 1;
break;
case 16:
break;
case 24:
outSize = (outSize / 4) * 2;
dest_size = (dest_size / 4) * 2;
break;
default:
FATAL("only 8 or 16 bits are supported for conversion!\n");
}
if (inFormat->channels != outFormat->channels) {
outSize /= inFormat->channels;
outSize *= outFormat->channels;
dest_size /= inFormat->channels;
dest_size *= outFormat->channels;
}
outSize /= shift;
outSize = floor(0.5 + (double)outSize * ratio);
outSize *= shift;
dest_size /= shift;
dest_size = floor(0.5 + (double)dest_size * ratio);
dest_size *= shift;
return outSize;
return dest_size;
}

8
src/pcm_utils.h
View File

@ -44,18 +44,20 @@ struct pcm_convert_state {
int error;
};
void pcm_volumeChange(char *buffer, int bufferSize, const struct audio_format *format,
void pcm_volume(char *buffer, int bufferSize,
const struct audio_format *format,
int volume);
void pcm_mix(char *buffer1, const char *buffer2, size_t size,
const struct audio_format *format, float portion1);
size_t pcm_convertAudioFormat(const struct audio_format *inFormat,
size_t pcm_convert(const struct audio_format *inFormat,
const char *inBuffer, size_t inSize,
const struct audio_format *outFormat,
char *outBuffer,
struct pcm_convert_state *convState);
size_t pcm_sizeOfConvBuffer(const struct audio_format *inFormat, size_t inSize,
size_t pcm_convert_size(const struct audio_format *inFormat, size_t inSize,
const struct audio_format *outFormat);
#endif

2
src/player_thread.c
View File

@ -213,7 +213,7 @@ static int playChunk(ob_chunk * chunk,
pc.elapsedTime = chunk->times;
pc.bitRate = chunk->bitRate;
pcm_volumeChange(chunk->data, chunk->chunkSize,
pcm_volume(chunk->data, chunk->chunkSize,
format, pc.softwareVolume);
if (playAudio(chunk->data,