mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-11 21:52:28 +00:00
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
#include "wav_parser.h"
|
|
|
|
#define TAG "WavParser"
|
|
|
|
const char* format_text(FormatTag tag) {
|
|
switch(tag) {
|
|
case FormatTagPCM:
|
|
return "PCM";
|
|
case FormatTagIEEE_FLOAT:
|
|
return "IEEE FLOAT";
|
|
default:
|
|
return "Unknown";
|
|
}
|
|
};
|
|
|
|
struct WavParser {
|
|
WavHeaderChunk header;
|
|
WavFormatChunk format;
|
|
WavDataChunk data;
|
|
size_t wav_data_start;
|
|
size_t wav_data_end;
|
|
};
|
|
|
|
WavParser* wav_parser_alloc() {
|
|
return malloc(sizeof(WavParser));
|
|
}
|
|
|
|
void wav_parser_free(WavParser* parser) {
|
|
free(parser);
|
|
}
|
|
|
|
bool wav_parser_parse(WavParser* parser, Stream* stream, WavPlayerApp* app) {
|
|
stream_read(stream, (uint8_t*)&parser->header, sizeof(WavHeaderChunk));
|
|
stream_read(stream, (uint8_t*)&parser->format, sizeof(WavFormatChunk));
|
|
stream_read(stream, (uint8_t*)&parser->data, sizeof(WavDataChunk));
|
|
|
|
if(memcmp(parser->header.riff, "RIFF", 4) != 0 ||
|
|
memcmp(parser->header.wave, "WAVE", 4) != 0) {
|
|
FURI_LOG_E(TAG, "WAV: wrong header");
|
|
return false;
|
|
}
|
|
|
|
if(memcmp(parser->format.fmt, "fmt ", 4) != 0) {
|
|
FURI_LOG_E(TAG, "WAV: wrong format");
|
|
return false;
|
|
}
|
|
|
|
if(parser->format.tag != FormatTagPCM || memcmp(parser->data.data, "data", 4) != 0) {
|
|
FURI_LOG_E(
|
|
TAG,
|
|
"WAV: non-PCM format %u, next '%lu'",
|
|
parser->format.tag,
|
|
(uint32_t)parser->data.data);
|
|
return false;
|
|
}
|
|
|
|
FURI_LOG_I(
|
|
TAG,
|
|
"Format tag: %s, ch: %u, smplrate: %lu, bps: %lu, bits: %u",
|
|
format_text(parser->format.tag),
|
|
parser->format.channels,
|
|
parser->format.sample_rate,
|
|
parser->format.byte_per_sec,
|
|
parser->format.bits_per_sample);
|
|
|
|
app->sample_rate = parser->format.sample_rate;
|
|
app->num_channels = parser->format.channels;
|
|
app->bits_per_sample = parser->format.bits_per_sample;
|
|
|
|
parser->wav_data_start = stream_tell(stream);
|
|
parser->wav_data_end = parser->wav_data_start + parser->data.size;
|
|
|
|
FURI_LOG_I(TAG, "data: %u - %u", parser->wav_data_start, parser->wav_data_end);
|
|
|
|
return true;
|
|
}
|
|
|
|
size_t wav_parser_get_data_start(WavParser* parser) {
|
|
return parser->wav_data_start;
|
|
}
|
|
|
|
size_t wav_parser_get_data_end(WavParser* parser) {
|
|
return parser->wav_data_end;
|
|
}
|
|
|
|
size_t wav_parser_get_data_len(WavParser* parser) {
|
|
return parser->wav_data_end - parser->wav_data_start;
|
|
}
|