Replace TABS by 4 spaces
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Ray
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src/external/qoaplay.c
vendored
222
src/external/qoaplay.c
vendored
@ -35,22 +35,22 @@
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//----------------------------------------------------------------------------------
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// QOA streaming data descriptor
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typedef struct {
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qoa_desc info; // QOA descriptor data
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qoa_desc info; // QOA descriptor data
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FILE *file; // QOA file to read, if NULL, using memory buffer -> file_data
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unsigned char *file_data; // QOA file data on memory
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unsigned int file_data_size; // QOA file data on memory size
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unsigned int file_data_offset; // QOA file data on memory offset for next read
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unsigned int first_frame_pos; // First frame position (after QOA header, required for offset)
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unsigned int sample_position; // Current streaming sample position
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unsigned int first_frame_pos; // First frame position (after QOA header, required for offset)
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unsigned int sample_position; // Current streaming sample position
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unsigned char *buffer; // Buffer used to read samples from file/memory (used on decoding)
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unsigned int buffer_len; // Buffer length to read samples for streaming
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unsigned char *buffer; // Buffer used to read samples from file/memory (used on decoding)
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unsigned int buffer_len; // Buffer length to read samples for streaming
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short *sample_data; // Sample data decoded
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unsigned int sample_data_len; // Sample data decoded length
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unsigned int sample_data_pos; // Sample data decoded position
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short *sample_data; // Sample data decoded
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unsigned int sample_data_len; // Sample data decoded length
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unsigned int sample_data_pos; // Sample data decoded position
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} qoaplay_desc;
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@ -85,97 +85,97 @@ int qoaplay_get_frame(qoaplay_desc *qoa_ctx);
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// Open QOA file, keep FILE pointer to keep reading from file
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qoaplay_desc *qoaplay_open(char *path)
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{
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FILE *file = fopen(path, "rb");
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if (!file) return NULL;
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FILE *file = fopen(path, "rb");
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if (!file) return NULL;
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// Read and decode the file header
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unsigned char header[QOA_MIN_FILESIZE];
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int read = fread(header, QOA_MIN_FILESIZE, 1, file);
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if (!read) return NULL;
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// Read and decode the file header
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unsigned char header[QOA_MIN_FILESIZE];
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int read = fread(header, QOA_MIN_FILESIZE, 1, file);
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if (!read) return NULL;
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qoa_desc qoa;
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unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
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if (!first_frame_pos) return NULL;
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qoa_desc qoa;
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unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
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if (!first_frame_pos) return NULL;
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// Rewind the file back to beginning of the first frame
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fseek(file, first_frame_pos, SEEK_SET);
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// Rewind the file back to beginning of the first frame
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fseek(file, first_frame_pos, SEEK_SET);
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// Allocate one chunk of memory for the qoaplay_desc struct
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// Allocate one chunk of memory for the qoaplay_desc struct
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// + the sample data for one frame
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// + a buffer to hold one frame of encoded data
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unsigned int buffer_size = qoa_max_frame_size(&qoa);
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unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
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qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
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memset(qoa_ctx, 0, sizeof(qoaplay_desc));
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qoa_ctx->file = file;
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qoa_ctx->file_data = NULL;
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qoa_ctx->file_data_size = 0;
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qoa_ctx->file_data_offset = 0;
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qoa_ctx->first_frame_pos = first_frame_pos;
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unsigned int buffer_size = qoa_max_frame_size(&qoa);
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unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
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qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
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memset(qoa_ctx, 0, sizeof(qoaplay_desc));
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qoa_ctx->file = file;
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qoa_ctx->file_data = NULL;
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qoa_ctx->file_data_size = 0;
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qoa_ctx->file_data_offset = 0;
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qoa_ctx->first_frame_pos = first_frame_pos;
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// Setup data pointers to previously allocated data
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qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
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qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
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// Setup data pointers to previously allocated data
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qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
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qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
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qoa_ctx->info.channels = qoa.channels;
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qoa_ctx->info.samplerate = qoa.samplerate;
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qoa_ctx->info.samples = qoa.samples;
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qoa_ctx->info.channels = qoa.channels;
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qoa_ctx->info.samplerate = qoa.samplerate;
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qoa_ctx->info.samples = qoa.samples;
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return qoa_ctx;
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return qoa_ctx;
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}
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// Open QOA file from memory, no FILE pointer required
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qoaplay_desc *qoaplay_open_memory(const unsigned char *data, int data_size)
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{
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// Read and decode the file header
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unsigned char header[QOA_MIN_FILESIZE];
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memcpy(header, data, QOA_MIN_FILESIZE);
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// Read and decode the file header
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unsigned char header[QOA_MIN_FILESIZE];
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memcpy(header, data, QOA_MIN_FILESIZE);
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qoa_desc qoa;
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unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
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if (!first_frame_pos) return NULL;
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qoa_desc qoa;
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unsigned int first_frame_pos = qoa_decode_header(header, QOA_MIN_FILESIZE, &qoa);
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if (!first_frame_pos) return NULL;
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// Allocate one chunk of memory for the qoaplay_desc struct
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// + the sample data for one frame
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// + a buffer to hold one frame of encoded data
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unsigned int buffer_size = qoa_max_frame_size(&qoa);
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unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
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qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
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memset(qoa_ctx, 0, sizeof(qoaplay_desc));
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// Allocate one chunk of memory for the qoaplay_desc struct
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// + the sample data for one frame
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// + a buffer to hold one frame of encoded data
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unsigned int buffer_size = qoa_max_frame_size(&qoa);
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unsigned int sample_data_size = qoa.channels*QOA_FRAME_LEN*sizeof(short)*2;
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qoaplay_desc *qoa_ctx = QOA_MALLOC(sizeof(qoaplay_desc) + buffer_size + sample_data_size);
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memset(qoa_ctx, 0, sizeof(qoaplay_desc));
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qoa_ctx->file = NULL;
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qoa_ctx->file = NULL;
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// Keep a copy of file data provided to be managed internally
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qoa_ctx->file_data = (unsigned char *)QOA_MALLOC(data_size);
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memcpy(qoa_ctx->file_data, data, data_size);
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qoa_ctx->file_data_size = data_size;
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qoa_ctx->file_data_offset = 0;
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qoa_ctx->first_frame_pos = first_frame_pos;
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// Keep a copy of file data provided to be managed internally
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qoa_ctx->file_data = (unsigned char *)QOA_MALLOC(data_size);
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memcpy(qoa_ctx->file_data, data, data_size);
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qoa_ctx->file_data_size = data_size;
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qoa_ctx->file_data_offset = 0;
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qoa_ctx->first_frame_pos = first_frame_pos;
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// Setup data pointers to previously allocated data
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qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
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qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
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// Setup data pointers to previously allocated data
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qoa_ctx->buffer = ((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc);
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qoa_ctx->sample_data = (short *)(((unsigned char *)qoa_ctx) + sizeof(qoaplay_desc) + buffer_size);
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qoa_ctx->info.channels = qoa.channels;
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qoa_ctx->info.samplerate = qoa.samplerate;
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qoa_ctx->info.samples = qoa.samples;
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qoa_ctx->info.channels = qoa.channels;
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qoa_ctx->info.samplerate = qoa.samplerate;
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qoa_ctx->info.samples = qoa.samples;
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return qoa_ctx;
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return qoa_ctx;
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}
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// Close QOA file (if open) and free internal memory
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void qoaplay_close(qoaplay_desc *qoa_ctx)
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{
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if (qoa_ctx->file) fclose(qoa_ctx->file);
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if (qoa_ctx->file) fclose(qoa_ctx->file);
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if ((qoa_ctx->file_data) && (qoa_ctx->file_data_size > 0))
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{
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QOA_FREE(qoa_ctx->file_data);
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qoa_ctx->file_data_size = 0;
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}
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if ((qoa_ctx->file_data) && (qoa_ctx->file_data_size > 0))
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{
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QOA_FREE(qoa_ctx->file_data);
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qoa_ctx->file_data_size = 0;
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}
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QOA_FREE(qoa_ctx);
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QOA_FREE(qoa_ctx);
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}
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// Decode one frame from QOA data
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@ -189,90 +189,90 @@ unsigned int qoaplay_decode_frame(qoaplay_desc *qoa_ctx)
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qoa_ctx->file_data_offset += qoa_ctx->buffer_len;
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}
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unsigned int frame_len;
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qoa_decode_frame(qoa_ctx->buffer, qoa_ctx->buffer_len, &qoa_ctx->info, qoa_ctx->sample_data, &frame_len);
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qoa_ctx->sample_data_pos = 0;
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qoa_ctx->sample_data_len = frame_len;
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unsigned int frame_len;
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qoa_decode_frame(qoa_ctx->buffer, qoa_ctx->buffer_len, &qoa_ctx->info, qoa_ctx->sample_data, &frame_len);
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qoa_ctx->sample_data_pos = 0;
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qoa_ctx->sample_data_len = frame_len;
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return frame_len;
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return frame_len;
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}
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// Rewind QOA file or memory pointer to beginning
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void qoaplay_rewind(qoaplay_desc *qoa_ctx)
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{
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if (qoa_ctx->file) fseek(qoa_ctx->file, qoa_ctx->first_frame_pos, SEEK_SET);
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if (qoa_ctx->file) fseek(qoa_ctx->file, qoa_ctx->first_frame_pos, SEEK_SET);
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else qoa_ctx->file_data_offset = 0;
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qoa_ctx->sample_position = 0;
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qoa_ctx->sample_data_len = 0;
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qoa_ctx->sample_data_pos = 0;
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qoa_ctx->sample_position = 0;
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qoa_ctx->sample_data_len = 0;
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qoa_ctx->sample_data_pos = 0;
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}
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// Decode required QOA frames
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unsigned int qoaplay_decode(qoaplay_desc *qoa_ctx, float *sample_data, int num_samples)
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{
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int src_index = qoa_ctx->sample_data_pos*qoa_ctx->info.channels;
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int dst_index = 0;
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int src_index = qoa_ctx->sample_data_pos*qoa_ctx->info.channels;
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int dst_index = 0;
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for (int i = 0; i < num_samples; i++)
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for (int i = 0; i < num_samples; i++)
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{
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// Do we have to decode more samples?
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if (qoa_ctx->sample_data_len - qoa_ctx->sample_data_pos == 0)
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// Do we have to decode more samples?
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if (qoa_ctx->sample_data_len - qoa_ctx->sample_data_pos == 0)
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{
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if (!qoaplay_decode_frame(qoa_ctx))
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if (!qoaplay_decode_frame(qoa_ctx))
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{
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// Loop to the beginning
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qoaplay_rewind(qoa_ctx);
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qoaplay_decode_frame(qoa_ctx);
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}
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// Loop to the beginning
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qoaplay_rewind(qoa_ctx);
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qoaplay_decode_frame(qoa_ctx);
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}
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src_index = 0;
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}
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src_index = 0;
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}
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// Normalize to -1..1 floats and write to dest
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for (int c = 0; c < qoa_ctx->info.channels; c++)
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// Normalize to -1..1 floats and write to dest
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for (int c = 0; c < qoa_ctx->info.channels; c++)
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{
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sample_data[dst_index++] = qoa_ctx->sample_data[src_index++]/32768.0;
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}
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sample_data[dst_index++] = qoa_ctx->sample_data[src_index++]/32768.0;
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}
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qoa_ctx->sample_data_pos++;
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qoa_ctx->sample_position++;
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}
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qoa_ctx->sample_data_pos++;
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qoa_ctx->sample_position++;
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}
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return num_samples;
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return num_samples;
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}
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// Get QOA total time duration in seconds
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double qoaplay_get_duration(qoaplay_desc *qoa_ctx)
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{
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return (double)qoa_ctx->info.samples/(double)qoa_ctx->info.samplerate;
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return (double)qoa_ctx->info.samples/(double)qoa_ctx->info.samplerate;
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}
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// Get QOA current time position in seconds
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double qoaplay_get_time(qoaplay_desc *qoa_ctx)
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{
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return (double)qoa_ctx->sample_position/(double)qoa_ctx->info.samplerate;
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return (double)qoa_ctx->sample_position/(double)qoa_ctx->info.samplerate;
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}
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// Get QOA current audio frame
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int qoaplay_get_frame(qoaplay_desc *qoa_ctx)
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{
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return qoa_ctx->sample_position/QOA_FRAME_LEN;
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return qoa_ctx->sample_position/QOA_FRAME_LEN;
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}
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// Seek QOA audio frame
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void qoaplay_seek_frame(qoaplay_desc *qoa_ctx, int frame)
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{
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if (frame < 0) frame = 0;
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if (frame < 0) frame = 0;
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if (frame > qoa_ctx->info.samples/QOA_FRAME_LEN) frame = qoa_ctx->info.samples/QOA_FRAME_LEN;
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if (frame > qoa_ctx->info.samples/QOA_FRAME_LEN) frame = qoa_ctx->info.samples/QOA_FRAME_LEN;
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qoa_ctx->sample_position = frame*QOA_FRAME_LEN;
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qoa_ctx->sample_data_len = 0;
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qoa_ctx->sample_data_pos = 0;
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qoa_ctx->sample_position = frame*QOA_FRAME_LEN;
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qoa_ctx->sample_data_len = 0;
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qoa_ctx->sample_data_pos = 0;
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unsigned int offset = qoa_ctx->first_frame_pos + frame*qoa_max_frame_size(&qoa_ctx->info);
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unsigned int offset = qoa_ctx->first_frame_pos + frame*qoa_max_frame_size(&qoa_ctx->info);
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if (qoa_ctx->file) fseek(qoa_ctx->file, offset, SEEK_SET);
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if (qoa_ctx->file) fseek(qoa_ctx->file, offset, SEEK_SET);
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else qoa_ctx->file_data_offset = offset;
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}
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