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);