int lqt_gavl_decode_audio(quicktime_t * file, int track,
gavl_audio_frame_t * frame,
int samples)
{
frame->timestamp = quicktime_audio_position(file, track);
lqt_decode_audio_raw(file, frame->samples.s_8, samples, track);
frame->valid_samples = lqt_last_audio_position(file, track) - frame->timestamp;
return frame->valid_samples;
}
void decode_mov(decode_t *decode)
{
quicktime_t *qt_handle=NULL;
unsigned char **p_raw_buffer;
char *p_v_codec=NULL,*p_a_codec=NULL,*p_buffer=NULL,*p_tmp=NULL;
int s_width=0,s_height=0,s_channel=0,s_bits=0,s_buff_size=0,s_audio_size=0,s_video_size=0,s_sample=0;
int s_cont,s_frames;
double s_fps=0;
long s_audio_rate,s_qt_pos;
uint16_t *p_mask1, *p_mask2;
char msgbuf[TC_BUF_MIN];
qt_handle = quicktime_open((char * )decode->name, 1, 0);
if (qt_handle == NULL) {
QT_ABORT("can't open quicktime!");
}
quicktime_set_preload(qt_handle, 10240000);
s_fps = quicktime_frame_rate(qt_handle, 0);
if (decode->format == TC_CODEC_PCM) {
if (quicktime_audio_tracks(qt_handle) == 0) {
QT_ABORT("no audio track in quicktime found!");
}
s_channel = quicktime_track_channels(qt_handle, 0);
s_audio_rate = quicktime_sample_rate(qt_handle, 0);
s_bits = quicktime_audio_bits(qt_handle, 0);
s_audio_size = quicktime_audio_length(qt_handle,0);
p_a_codec = quicktime_audio_compressor(qt_handle, 0);
if (decode->frame_limit[1] < s_audio_size) {
s_audio_size = decode->frame_limit[1] - decode->frame_limit[0];
} else {
s_audio_size -= decode->frame_limit[0];
}
if (decode->verbose) {
tc_log_info(__FILE__, "Audio codec=%s, rate=%ld Hz, bits=%d, channels=%d",
p_a_codec, s_audio_rate, s_bits, s_channel);
}
if ((s_bits != 8) && (s_bits != 16)) {
tc_snprintf(msgbuf, sizeof(msgbuf), "unsupported %d bit rate"
" in quicktime!", s_bits);
QT_ABORT(msgbuf);
}
if (s_channel > 2) {
tc_snprintf(msgbuf, sizeof(msgbuf), "too many audio tracks "
"(%d) found in quicktime!", s_channel);
QT_ABORT(msgbuf);
}
if (strlen(p_a_codec) == 0) {
QT_ABORT("unsupported codec (empty!) in quicktime!");
}
if (quicktime_supported_audio(qt_handle, 0) != 0) {
s_qt_pos = quicktime_audio_position(qt_handle,0);
s_sample = (1.00 * s_channel * s_bits *s_audio_rate)/(s_fps * 8);
s_buff_size = s_sample * sizeof(uint16_t);
p_buffer = tc_malloc(s_buff_size);
if (s_bits == 16)
s_sample /= 2;
if (s_channel == 1) {
p_mask1=(uint16_t *)p_buffer;
quicktime_set_audio_position(qt_handle, s_qt_pos + decode->frame_limit[0], 0);
for (; s_audio_size > 0; s_audio_size -= s_sample) {
if (quicktime_decode_audio(qt_handle, p_mask1, NULL, s_sample, 0) < 0) {
QT_ABORT("error reading quicktime audio frame");
}
QT_WRITE(decode->fd_out, p_buffer, s_buff_size);
}
} else {
s_sample /= 2;
p_mask1 = (uint16_t *)p_buffer;
p_mask2 = tc_malloc(s_sample * sizeof(uint16_t));
s_qt_pos += decode->frame_limit[0];
quicktime_set_audio_position(qt_handle, s_qt_pos, 0);
for (; s_audio_size > 0; s_audio_size -= s_sample) {
if (quicktime_decode_audio(qt_handle, p_mask1, NULL, s_sample, 0) < 0) {
QT_ABORT("error reading quicktime audio frame");
}
quicktime_set_audio_position(qt_handle, s_qt_pos, 0);
if (quicktime_decode_audio(qt_handle,p_mask2, NULL,s_sample, 1) < 0) {
QT_ABORT("error reading quicktime audio frame");
}
for (s_cont = s_sample - 1; s_cont >= 0; s_cont--)
p_mask1[s_cont<<1] = p_mask1[s_cont];
for (s_cont = 0; s_cont < s_sample; s_cont++)
p_mask1[1+(s_cont<<1)] = p_mask2[s_cont];
s_qt_pos += s_sample;
QT_WRITE(decode->fd_out, p_buffer, s_buff_size >> 1);
}
free(p_mask2);
}
free(p_buffer);
}
#if !defined(LIBQUICKTIME_000904)
else if ((strcasecmp(p_a_codec, QUICKTIME_RAW) == 0)
for (s_cont = 0; s_cont < s_sample; s_cont++)
p_mask1[1+(s_cont<<1)] = p_mask2[s_cont];
s_qt_pos += s_sample;
QT_WRITE(decode->fd_out, p_buffer, s_buff_size >> 1);
}
free(p_mask2);
}
free(p_buffer);
}
#if !defined(LIBQUICKTIME_000904)
else if ((strcasecmp(p_a_codec, QUICKTIME_RAW) == 0)
|| (strcasecmp(p_a_codec, QUICKTIME_TWOS) == 0)) {
s_sample = (1.00 * s_channel * s_bits *s_audio_rate)/(s_fps * 8);
s_buff_size = s_sample * sizeof(uint16_t);
p_buffer = tc_malloc(s_buff_size);
s_qt_pos = quicktime_audio_position(qt_handle, 0);
quicktime_set_audio_position(qt_handle, s_qt_pos + decode->frame_limit[0], 0);
for (; s_audio_size > 0; s_audio_size -= s_buff_size) {
if (quicktime_read_audio(qt_handle,p_buffer, s_buff_size, 0) < 0) {
QT_ABORT("error reading quicktime audio frame");
}
QT_WRITE(decode->fd_out, p_buffer, s_buff_size);
}
quicktime_close(qt_handle);
free(p_buffer);
}
#endif
else {
tc_snprintf(msgbuf, sizeof(msgbuf), "quicktime audio codec '%s'"
" not supported!", p_a_codec);
QT_ABORT(msgbuf);
