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Remove libsndfile dep and code our own savewav

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This commit is contained in:
Philippe Teuwen 2020-01-13 13:49:32 +01:00
commit 5cdc6aab48
6 changed files with 45 additions and 21 deletions
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52
client/fileutils.c
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@ -41,7 +41,6 @@
#include <dirent.h>
#include <ctype.h>
#include <sndfile.h>
#include "pm3_cmd.h"
#include "commonutil.h"
@ -405,30 +404,55 @@ int saveFileWAVE(const char *preferredName, int *data, size_t datalen) {
if (data == NULL) return PM3_EINVARG;
char *fileName = newfilenamemcopy(preferredName, ".wav");
if (fileName == NULL) return PM3_EMALLOC;
int retval = PM3_SUCCESS;
SF_INFO wave_info;
// TODO update for other tag types
wave_info.samplerate = 125000;
wave_info.channels = 1;
wave_info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_U8;
SNDFILE *wave_file = sf_open(fileName, SFM_WRITE, &wave_info);
struct wave_info_t {
char signature[4];
uint32_t filesize;
char type[4];
struct {
char tag[4];
uint32_t size;
uint16_t codec;
uint16_t nb_channel;
uint32_t sample_per_sec;
uint32_t byte_per_sec;
uint16_t block_align;
uint16_t bit_per_sample;
} PACKED format;
struct {
char tag[4];
uint32_t size;
} PACKED audio_data;
} PACKED wave_info = {
.signature = "RIFF",
.filesize = sizeof(wave_info) - sizeof(wave_info.signature) - sizeof(wave_info.filesize) + datalen,
.type = "WAVE",
.format.tag = "fmt ",
.format.size = sizeof(wave_info.format) - sizeof(wave_info.format.tag) - sizeof(wave_info.format.size),
.format.codec = 1, // PCM
.format.nb_channel = 1,
.format.sample_per_sec = 125000, // TODO update for other tag types
.format.byte_per_sec = 125000, // TODO update for other tag types
.format.block_align = 1,
.format.bit_per_sample = 8,
.audio_data.tag = "data",
.audio_data.size = datalen,
};
FILE *wave_file = fopen(fileName, "wb");
if (!wave_file) {
PrintAndLogEx(WARNING, "file not found or locked. "_YELLOW_("'%s'"), fileName);
retval = PM3_EFILE;
goto out;
}
// unfortunately need to upconvert to 16-bit samples because libsndfile doesn't do 8-bit(?)
fwrite(&wave_info, sizeof(wave_info), 1, wave_file);
for (int i = 0; i < datalen; i++) {
short sample = data[i] * 256;
sf_write_short(wave_file, &sample, 1);
uint8_t sample = data[i] + 128;
fwrite(&sample, 1, 1, wave_file);
}
fclose(wave_file);
sf_close(wave_file);
PrintAndLogEx(SUCCESS, "saved " _YELLOW_("%zu")" bytes to wave file " _YELLOW_("'%s'"), 2 * datalen, fileName);
out: