15b4baba28
- minimize RAM usage of all components - use both IRAM and DRAM in player component so we can buffer up to 1s on modules without SPI RAM - support fragemented pcm chunks so we can use all available RAM if there isn't a big enough block available but still enough HEAP - reinclude all components from jorgen's master branch - add custom i2s driver to get a precise timing of initial sync - change wrong usage of esp_timer for latency measurement of snapcast protocol - add player component
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
#include "buffer.h"
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void buffer_read_init(read_buffer_t *buffer, const char *data, size_t size) {
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buffer->buffer = data;
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buffer->size = size;
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buffer->index = 0;
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}
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void buffer_write_init(write_buffer_t *buffer, char *data, size_t size) {
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buffer->buffer = data;
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buffer->size = size;
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buffer->index = 0;
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}
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int buffer_read_buffer(read_buffer_t *buffer, char *data, size_t size) {
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int i;
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if (buffer->size - buffer->index < size) {
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return 1;
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}
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for (i = 0; i < size; i++) {
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data[i] = buffer->buffer[buffer->index++];
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}
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return 0;
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}
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int buffer_write_buffer(write_buffer_t *buffer, const char *data, size_t size) {
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int i;
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if (buffer->size - buffer->index < size) {
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return 1;
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}
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for (i = 0; i < size; i++) {
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buffer->buffer[buffer->index++] = data[i];
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}
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return 0;
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}
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int buffer_read_uint32(read_buffer_t *buffer, uint32_t *data) {
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if (buffer->size - buffer->index < sizeof(uint32_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 8;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 16;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 24;
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return 0;
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}
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int buffer_write_uint32(write_buffer_t *buffer, uint32_t data) {
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if (buffer->size - buffer->index < sizeof(uint32_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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buffer->buffer[buffer->index++] = (data >> 8) & 0xff;
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buffer->buffer[buffer->index++] = (data >> 16) & 0xff;
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buffer->buffer[buffer->index++] = (data >> 24) & 0xff;
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return 0;
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}
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int buffer_read_uint16(read_buffer_t *buffer, uint16_t *data) {
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if (buffer->size - buffer->index < sizeof(uint16_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 8;
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return 0;
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}
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int buffer_write_uint16(write_buffer_t *buffer, uint16_t data) {
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if (buffer->size - buffer->index < sizeof(uint16_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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buffer->buffer[buffer->index++] = (data >> 8) & 0xff;
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return 0;
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}
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int buffer_read_uint8(read_buffer_t *buffer, uint8_t *data) {
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if (buffer->size - buffer->index < sizeof(uint8_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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return 0;
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}
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int buffer_write_uint8(write_buffer_t *buffer, uint8_t data) {
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if (buffer->size - buffer->index < sizeof(uint8_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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return 0;
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}
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int buffer_read_int32(read_buffer_t *buffer, int32_t *data) {
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if (buffer->size - buffer->index < sizeof(int32_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 8;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 16;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 24;
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return 0;
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}
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int buffer_write_int32(write_buffer_t *buffer, int32_t data) {
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if (buffer->size - buffer->index < sizeof(int32_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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buffer->buffer[buffer->index++] = (data >> 8) & 0xff;
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buffer->buffer[buffer->index++] = (data >> 16) & 0xff;
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buffer->buffer[buffer->index++] = (data >> 24) & 0xff;
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return 0;
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}
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int buffer_read_int16(read_buffer_t *buffer, int16_t *data) {
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if (buffer->size - buffer->index < sizeof(int16_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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*data |= (buffer->buffer[buffer->index++] & 0xff) << 8;
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return 0;
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}
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int buffer_write_int16(write_buffer_t *buffer, int16_t data) {
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if (buffer->size - buffer->index < sizeof(int16_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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buffer->buffer[buffer->index++] = (data >> 8) & 0xff;
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return 0;
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}
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int buffer_read_int8(read_buffer_t *buffer, int8_t *data) {
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if (buffer->size - buffer->index < sizeof(int8_t)) {
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return 1;
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}
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*data = buffer->buffer[buffer->index++] & 0xff;
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return 0;
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}
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int buffer_write_int8(write_buffer_t *buffer, int8_t data) {
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if (buffer->size - buffer->index < sizeof(int8_t)) {
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return 1;
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}
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buffer->buffer[buffer->index++] = data & 0xff;
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return 0;
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}
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