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Add an option to aac-enc for dropping a number of samples at the start of the encode

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This commit is contained in:
Martin Storsjo 2015-01-07 11:38:57 +02:00
parent 97b382cd3f
commit 714cbbb1a5
1 changed files with 14 additions and 2 deletions
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16
aac-enc.c
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@ -24,7 +24,7 @@
#include "wavreader.h" #include "wavreader.h"
void usage(const char* name) { void usage(const char* name) {
fprintf(stderr, "%s [-r bitrate] [-t aot] [-a afterburner] [-s sbr] [-v vbr] in.wav out.aac\n", name); fprintf(stderr, "%s [-r bitrate] [-t aot] [-a afterburner] [-s sbr] [-v vbr] [-d drop] in.wav out.aac\n", name);
fprintf(stderr, "Supported AOTs:\n"); fprintf(stderr, "Supported AOTs:\n");
fprintf(stderr, "\t2\tAAC-LC\n"); fprintf(stderr, "\t2\tAAC-LC\n");
fprintf(stderr, "\t5\tHE-AAC\n"); fprintf(stderr, "\t5\tHE-AAC\n");
@ -47,10 +47,11 @@ int main(int argc, char *argv[]) {
int afterburner = 1; int afterburner = 1;
int eld_sbr = 0; int eld_sbr = 0;
int vbr = 0; int vbr = 0;
int drop = 0;
HANDLE_AACENCODER handle; HANDLE_AACENCODER handle;
CHANNEL_MODE mode; CHANNEL_MODE mode;
AACENC_InfoStruct info = { 0 }; AACENC_InfoStruct info = { 0 };
while ((ch = getopt(argc, argv, "r:t:a:s:v:")) != -1) { while ((ch = getopt(argc, argv, "r:t:a:s:v:d:")) != -1) {
switch (ch) { switch (ch) {
case 'r': case 'r':
bitrate = atoi(optarg); bitrate = atoi(optarg);
@ -67,6 +68,9 @@ int main(int argc, char *argv[]) {
case 'v': case 'v':
vbr = atoi(optarg); vbr = atoi(optarg);
break; break;
case 'd':
drop = atoi(optarg);
break;
case '?': case '?':
default: default:
usage(argv[0]); usage(argv[0]);
@ -172,6 +176,14 @@ int main(int argc, char *argv[]) {
input_buf = (uint8_t*) malloc(input_size); input_buf = (uint8_t*) malloc(input_size);
convert_buf = (int16_t*) malloc(input_size); convert_buf = (int16_t*) malloc(input_size);
while (drop > 0) {
int n = drop;
if (n > info.frameLength)
n = info.frameLength;
wav_read_data(wav, input_buf, channels * 2 * n);
drop -= n;
}
while (1) { while (1) {
AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 }; AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
AACENC_InArgs in_args = { 0 }; AACENC_InArgs in_args = { 0 };