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Ray 2023-03-06 15:05:57 +01:00
parent 614e0518a7
commit 8f7e2cd179
1 changed files with 111 additions and 111 deletions
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222
src/external/qoaplay.c vendored
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@ -35,22 +35,22 @@
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// QOA streaming data descriptor // QOA streaming data descriptor
typedef struct { typedef struct {
qoa_desc info; // QOA descriptor data qoa_desc info; // QOA descriptor data
FILE *file; // QOA file to read, if NULL, using memory buffer -> file_data FILE *file; // QOA file to read, if NULL, using memory buffer -> file_data
unsigned char *file_data; // QOA file data on memory unsigned char *file_data; // QOA file data on memory
unsigned int file_data_size; // QOA file data on memory size unsigned int file_data_size; // QOA file data on memory size
unsigned int file_data_offset; // QOA file data on memory offset for next read unsigned int file_data_offset; // QOA file data on memory offset for next read
unsigned int first_frame_pos; // First frame position (after QOA header, required for offset) unsigned int first_frame_pos; // First frame position (after QOA header, required for offset)
unsigned int sample_position; // Current streaming sample position unsigned int sample_position; // Current streaming sample position
unsigned char *buffer; // Buffer used to read samples from file/memory (used on decoding) unsigned char *buffer; // Buffer used to read samples from file/memory (used on decoding)
unsigned int buffer_len; // Buffer length to read samples for streaming unsigned int buffer_len; // Buffer length to read samples for streaming
short *sample_data; // Sample data decoded short *sample_data; // Sample data decoded
unsigned int sample_data_len; // Sample data decoded length unsigned int sample_data_len; // Sample data decoded length
unsigned int sample_data_pos; // Sample data decoded position unsigned int sample_data_pos; // Sample data decoded position
} qoaplay_desc; } qoaplay_desc;
@ -85,97 +85,97 @@ int qoaplay_get_frame(qoaplay_desc *qoa_ctx);
// Open QOA file, keep FILE pointer to keep reading from file // Open QOA file, keep FILE pointer to keep reading from file
qoaplay_desc *qoaplay_open(char *path) qoaplay_desc *qoaplay_open(char *path)
{ {
FILE *file = fopen(path, "rb"); FILE *file = fopen(path, "rb");
if (!file) return NULL; if (!file) return NULL;
// Read and decode the file header // Read and decode the file header
unsigned char header[QOA_MIN_FILESIZE]; unsigned char header[QOA_MIN_FILESIZE];
int read = fread(header, QOA_MIN_FILESIZE, 1, file); int read = fread(header, QOA_MIN_FILESIZE, 1, file);
if (!read) return NULL; if (!read) return NULL;
qoa_desc qoa; qoa_desc qoa;
unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa); unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
if (!first_frame_pos) return NULL; if (!first_frame_pos) return NULL;
// Rewind the file back to beginning of the first frame // Rewind the file back to beginning of the first frame
fseek(file, first_frame_pos, SEEK_SET); fseek(file, first_frame_pos, SEEK_SET);
// Allocate one chunk of memory for the qoaplay_desc struct // Allocate one chunk of memory for the qoaplay_desc struct
// + the sample data for one frame // + the sample data for one frame
// + a buffer to hold one frame of encoded data // + a buffer to hold one frame of encoded data
unsigned int buffer_size = qoa_max_frame_size(&qoa); unsigned int buffer_size = qoa_max_frame_size(&qoa);
unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2; unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size); qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
memset(qoa_ctx, 0, sizeof(qoaplay_desc)); memset(qoa_ctx, 0, sizeof(qoaplay_desc));
qoa_ctx->file = file; qoa_ctx->file = file;
qoa_ctx->file_data = NULL; qoa_ctx->file_data = NULL;
qoa_ctx->file_data_size = 0; qoa_ctx->file_data_size = 0;
qoa_ctx->file_data_offset = 0; qoa_ctx->file_data_offset = 0;
qoa_ctx->first_frame_pos = first_frame_pos; qoa_ctx->first_frame_pos = first_frame_pos;
// Setup data pointers to previously allocated data // Setup data pointers to previously allocated data
qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc); qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size); qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
qoa_ctx->info.channels = qoa.channels; qoa_ctx->info.channels = qoa.channels;
qoa_ctx->info.samplerate = qoa.samplerate; qoa_ctx->info.samplerate = qoa.samplerate;
qoa_ctx->info.samples = qoa.samples; qoa_ctx->info.samples = qoa.samples;
return qoa_ctx; return qoa_ctx;
} }
// Open QOA file from memory, no FILE pointer required // Open QOA file from memory, no FILE pointer required
qoaplay_desc *qoaplay_open_memory(const unsigned char *data, int data_size) qoaplay_desc *qoaplay_open_memory(const unsigned char *data, int data_size)
{ {
// Read and decode the file header // Read and decode the file header
unsigned char header[QOA_MIN_FILESIZE]; unsigned char header[QOA_MIN_FILESIZE];
memcpy(header, data, QOA_MIN_FILESIZE); memcpy(header, data, QOA_MIN_FILESIZE);
qoa_desc qoa; qoa_desc qoa;
unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa); unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
if (!first_frame_pos) return NULL; if (!first_frame_pos) return NULL;
// Allocate one chunk of memory for the qoaplay_desc struct // Allocate one chunk of memory for the qoaplay_desc struct
// + the sample data for one frame // + the sample data for one frame
// + a buffer to hold one frame of encoded data // + a buffer to hold one frame of encoded data
unsigned int buffer_size = qoa_max_frame_size(&qoa); unsigned int buffer_size = qoa_max_frame_size(&qoa);
unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2; unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size); qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
memset(qoa_ctx, 0, sizeof(qoaplay_desc)); memset(qoa_ctx, 0, sizeof(qoaplay_desc));
qoa_ctx->file = NULL; qoa_ctx->file = NULL;
// Keep a copy of file data provided to be managed internally // Keep a copy of file data provided to be managed internally
qoa_ctx->file_data = (unsigned char *)QOA_MALLOC(data_size); qoa_ctx->file_data = (unsigned char *)QOA_MALLOC(data_size);
memcpy(qoa_ctx->file_data, data, data_size); memcpy(qoa_ctx->file_data, data, data_size);
qoa_ctx->file_data_size = data_size; qoa_ctx->file_data_size = data_size;
qoa_ctx->file_data_offset = 0; qoa_ctx->file_data_offset = 0;
qoa_ctx->first_frame_pos = first_frame_pos; qoa_ctx->first_frame_pos = first_frame_pos;
// Setup data pointers to previously allocated data // Setup data pointers to previously allocated data
qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc); qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size); qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
qoa_ctx->info.channels = qoa.channels; qoa_ctx->info.channels = qoa.channels;
qoa_ctx->info.samplerate = qoa.samplerate; qoa_ctx->info.samplerate = qoa.samplerate;
qoa_ctx->info.samples = qoa.samples; qoa_ctx->info.samples = qoa.samples;
return qoa_ctx; return qoa_ctx;
} }
// Close QOA file (if open) and free internal memory // Close QOA file (if open) and free internal memory
void qoaplay_close(qoaplay_desc *qoa_ctx) void qoaplay_close(qoaplay_desc *qoa_ctx)
{ {
if (qoa_ctx->file) fclose(qoa_ctx->file); if (qoa_ctx->file) fclose(qoa_ctx->file);
if ((qoa_ctx->file_data) && (qoa_ctx->file_data_size > 0)) if ((qoa_ctx->file_data) && (qoa_ctx->file_data_size > 0))
{ {
QOA_FREE(qoa_ctx->file_data); QOA_FREE(qoa_ctx->file_data);
qoa_ctx->file_data_size = 0; qoa_ctx->file_data_size = 0;
} }
QOA_FREE(qoa_ctx); QOA_FREE(qoa_ctx);
} }
// Decode one frame from QOA data // Decode one frame from QOA data
@ -189,90 +189,90 @@ unsigned int qoaplay_decode_frame(qoaplay_desc *qoa_ctx)
qoa_ctx->file_data_offset += qoa_ctx->buffer_len; qoa_ctx->file_data_offset += qoa_ctx->buffer_len;
} }
unsigned int frame_len; unsigned int frame_len;
qoa_decode_frame(qoa_ctx->buffer, qoa_ctx->buffer_len, &qoa_ctx->info, qoa_ctx->sample_data, &frame_len); qoa_decode_frame(qoa_ctx->buffer, qoa_ctx->buffer_len, &qoa_ctx->info, qoa_ctx->sample_data, &frame_len);
qoa_ctx->sample_data_pos = 0; qoa_ctx->sample_data_pos = 0;
qoa_ctx->sample_data_len = frame_len; qoa_ctx->sample_data_len = frame_len;
return frame_len; return frame_len;
} }
// Rewind QOA file or memory pointer to beginning // Rewind QOA file or memory pointer to beginning
void qoaplay_rewind(qoaplay_desc *qoa_ctx) void qoaplay_rewind(qoaplay_desc *qoa_ctx)
{ {
if (qoa_ctx->file) fseek(qoa_ctx->file, qoa_ctx->first_frame_pos, SEEK_SET); if (qoa_ctx->file) fseek(qoa_ctx->file, qoa_ctx->first_frame_pos, SEEK_SET);
else qoa_ctx->file_data_offset = 0; else qoa_ctx->file_data_offset = 0;
qoa_ctx->sample_position = 0; qoa_ctx->sample_position = 0;
qoa_ctx->sample_data_len = 0; qoa_ctx->sample_data_len = 0;
qoa_ctx->sample_data_pos = 0; qoa_ctx->sample_data_pos = 0;
} }
// Decode required QOA frames // Decode required QOA frames
unsigned int qoaplay_decode(qoaplay_desc *qoa_ctx, float *sample_data, int num_samples) unsigned int qoaplay_decode(qoaplay_desc *qoa_ctx, float *sample_data, int num_samples)
{ {
int src_index = qoa_ctx->sample_data_pos*qoa_ctx->info.channels; int src_index = qoa_ctx->sample_data_pos*qoa_ctx->info.channels;
int dst_index = 0; int dst_index = 0;
for (int i = 0; i < num_samples; i++) for (int i = 0; i < num_samples; i++)
{ {
// Do we have to decode more samples? // Do we have to decode more samples?
if (qoa_ctx->sample_data_len - qoa_ctx->sample_data_pos == 0) if (qoa_ctx->sample_data_len - qoa_ctx->sample_data_pos == 0)
{ {
if (!qoaplay_decode_frame(qoa_ctx)) if (!qoaplay_decode_frame(qoa_ctx))
{ {
// Loop to the beginning // Loop to the beginning
qoaplay_rewind(qoa_ctx); qoaplay_rewind(qoa_ctx);
qoaplay_decode_frame(qoa_ctx); qoaplay_decode_frame(qoa_ctx);
} }
src_index = 0; src_index = 0;
} }
// Normalize to -1..1 floats and write to dest // Normalize to -1..1 floats and write to dest
for (int c = 0; c < qoa_ctx->info.channels; c++) for (int c = 0; c < qoa_ctx->info.channels; c++)
{ {
sample_data[dst_index++] = qoa_ctx->sample_data[src_index++]/32768.0; sample_data[dst_index++] = qoa_ctx->sample_data[src_index++]/32768.0;
} }
qoa_ctx->sample_data_pos++; qoa_ctx->sample_data_pos++;
qoa_ctx->sample_position++; qoa_ctx->sample_position++;
} }
return num_samples; return num_samples;
} }
// Get QOA total time duration in seconds // Get QOA total time duration in seconds
double qoaplay_get_duration(qoaplay_desc *qoa_ctx) double qoaplay_get_duration(qoaplay_desc *qoa_ctx)
{ {
return (double)qoa_ctx->info.samples/(double)qoa_ctx->info.samplerate; return (double)qoa_ctx->info.samples/(double)qoa_ctx->info.samplerate;
} }
// Get QOA current time position in seconds // Get QOA current time position in seconds
double qoaplay_get_time(qoaplay_desc *qoa_ctx) double qoaplay_get_time(qoaplay_desc *qoa_ctx)
{ {
return (double)qoa_ctx->sample_position/(double)qoa_ctx->info.samplerate; return (double)qoa_ctx->sample_position/(double)qoa_ctx->info.samplerate;
} }
// Get QOA current audio frame // Get QOA current audio frame
int qoaplay_get_frame(qoaplay_desc *qoa_ctx) int qoaplay_get_frame(qoaplay_desc *qoa_ctx)
{ {
return qoa_ctx->sample_position/QOA_FRAME_LEN; return qoa_ctx->sample_position/QOA_FRAME_LEN;
} }
// Seek QOA audio frame // Seek QOA audio frame
void qoaplay_seek_frame(qoaplay_desc *qoa_ctx, int frame) void qoaplay_seek_frame(qoaplay_desc *qoa_ctx, int frame)
{ {
if (frame < 0) frame = 0; if (frame < 0) frame = 0;
if (frame > qoa_ctx->info.samples/QOA_FRAME_LEN) frame = qoa_ctx->info.samples/QOA_FRAME_LEN; if (frame > qoa_ctx->info.samples/QOA_FRAME_LEN) frame = qoa_ctx->info.samples/QOA_FRAME_LEN;
qoa_ctx->sample_position = frame*QOA_FRAME_LEN; qoa_ctx->sample_position = frame*QOA_FRAME_LEN;
qoa_ctx->sample_data_len = 0; qoa_ctx->sample_data_len = 0;
qoa_ctx->sample_data_pos = 0; qoa_ctx->sample_data_pos = 0;
unsigned int offset = qoa_ctx->first_frame_pos + frame*qoa_max_frame_size(&qoa_ctx->info); unsigned int offset = qoa_ctx->first_frame_pos + frame*qoa_max_frame_size(&qoa_ctx->info);
if (qoa_ctx->file) fseek(qoa_ctx->file, offset, SEEK_SET); if (qoa_ctx->file) fseek(qoa_ctx->file, offset, SEEK_SET);
else qoa_ctx->file_data_offset = offset; else qoa_ctx->file_data_offset = offset;
} }