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path: root/src/DSUtil/AudioParser.cpp
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-rw-r--r--src/DSUtil/AudioParser.cpp522
1 files changed, 266 insertions, 256 deletions
diff --git a/src/DSUtil/AudioParser.cpp b/src/DSUtil/AudioParser.cpp
index 8d7a0e7e4..f8246db81 100644
--- a/src/DSUtil/AudioParser.cpp
+++ b/src/DSUtil/AudioParser.cpp
@@ -39,293 +39,303 @@
#define AC3_CHANNEL_MASK 15
#define AC3_LFE 16
-int GetAC3FrameSize(const BYTE *buf)
+int GetAC3FrameSize(const BYTE* buf)
{
- if (*(WORD*)buf != AC3_SYNC_WORD) // syncword
- return 0;
-
- int frame_size;
-
- if (buf[5] >> 3 <= 10) { // Normal AC-3
- static const int rates[] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640};
-
- int frmsizecod = buf[4] & 0x3F;
- if (frmsizecod >= 38)
- return 0;
-
- int rate = rates[frmsizecod >> 1];
- switch (buf[4] & 0xc0) {
- case 0:
- frame_size = 4 * rate;
- break;
- case 0x40:
- frame_size = 2 * (320 * rate / 147 + (frmsizecod & 1));
- break;
- case 0x80:
- frame_size = 6 * rate;
- break;
- default:
- return 0;
- }
- } else { /// Enhanced AC-3
- frame_size = (((buf[2] & 0x03) << 8) + buf[3] + 1) * 2;
- }
- return frame_size;
+ if (*(WORD*)buf != AC3_SYNC_WORD) { // syncword
+ return 0;
+ }
+
+ int frame_size;
+
+ if (buf[5] >> 3 <= 10) { // Normal AC-3
+ static const int rates[] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640};
+
+ int frmsizecod = buf[4] & 0x3F;
+ if (frmsizecod >= 38) {
+ return 0;
+ }
+
+ int rate = rates[frmsizecod >> 1];
+ switch (buf[4] & 0xc0) {
+ case 0:
+ frame_size = 4 * rate;
+ break;
+ case 0x40:
+ frame_size = 2 * (320 * rate / 147 + (frmsizecod & 1));
+ break;
+ case 0x80:
+ frame_size = 6 * rate;
+ break;
+ default:
+ return 0;
+ }
+ } else { /// Enhanced AC-3
+ frame_size = (((buf[2] & 0x03) << 8) + buf[3] + 1) * 2;
+ }
+ return frame_size;
}
-int GetMLPFrameSize(const BYTE *buf)
+int GetMLPFrameSize(const BYTE* buf)
{
- DWORD sync = *(DWORD*)(buf+4);
- if (sync == TRUEHD_SYNC_WORD || sync == MLP_SYNC_WORD) {
- return (((buf[0] << 8) | buf[1]) & 0xfff) * 2;
- }
- return 0;
+ DWORD sync = *(DWORD*)(buf + 4);
+ if (sync == TRUEHD_SYNC_WORD || sync == MLP_SYNC_WORD) {
+ return (((buf[0] << 8) | buf[1]) & 0xfff) * 2;
+ }
+ return 0;
}
-int ParseAC3Header(const BYTE *buf, int *samplerate, int *channels, int *framelength, int *bitrate)
+int ParseAC3Header(const BYTE* buf, int* samplerate, int* channels, int* framelength, int* bitrate)
{
- if (*(WORD*)buf != AC3_SYNC_WORD) // syncword
- return 0;
-
- if (buf[5] >> 3 >= 11) // bsid
- return 0;
-
- static const int rates[] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640};
- static const unsigned char lfeon[8] = {0x10, 0x10, 0x04, 0x04, 0x04, 0x01, 0x04, 0x01};
- static const unsigned char halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
-
- int frmsizecod = buf[4] & 0x3F;
- if (frmsizecod >= 38)
- return 0;
-
- int half = halfrate[buf[5] >> 3];
- int rate = rates[frmsizecod >> 1];
- *bitrate = (rate * 1000) >> half;
- int frame_size;
- switch (buf[4] & 0xc0) {
- case 0:
- *samplerate = 48000 >> half;
- frame_size = 4 * rate;
- break;
- case 0x40:
- *samplerate = 44100 >> half;
- frame_size = 2 * (320 * rate / 147 + (frmsizecod & 1));
- break;
- case 0x80:
- *samplerate = 32000 >> half;
- frame_size = 6 * rate;
- break;
- default:
- return 0;
- }
-
- unsigned char acmod = buf[6] >> 5;
- unsigned char flags = ((((buf[6] & 0xf8) == 0x50) ? AC3_DOLBY : acmod) | ((buf[6] & lfeon[acmod]) ? AC3_LFE : 0));
- switch (flags & AC3_CHANNEL_MASK) {
- case AC3_MONO:
- *channels = 1;
- break;
- case AC3_CHANNEL:
- case AC3_STEREO:
- case AC3_CHANNEL1:
- case AC3_CHANNEL2:
- case AC3_DOLBY:
- *channels = 2;
- break;
- case AC3_2F1R:
- case AC3_3F:
- *channels = 3;
- break;
- case AC3_3F1R:
- case AC3_2F2R:
- *channels = 4;
- break;
- case AC3_3F2R:
- *channels = 5;
- break;
- }
- if (flags & AC3_LFE) (*channels)++;
-
- *framelength = 1536;
- return frame_size;
+ if (*(WORD*)buf != AC3_SYNC_WORD) { // syncword
+ return 0;
+ }
+
+ if (buf[5] >> 3 >= 11) { // bsid
+ return 0;
+ }
+
+ static const int rates[] = {32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640};
+ static const unsigned char lfeon[8] = {0x10, 0x10, 0x04, 0x04, 0x04, 0x01, 0x04, 0x01};
+ static const unsigned char halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
+
+ int frmsizecod = buf[4] & 0x3F;
+ if (frmsizecod >= 38) {
+ return 0;
+ }
+
+ int half = halfrate[buf[5] >> 3];
+ int rate = rates[frmsizecod >> 1];
+ *bitrate = (rate * 1000) >> half;
+ int frame_size;
+ switch (buf[4] & 0xc0) {
+ case 0:
+ *samplerate = 48000 >> half;
+ frame_size = 4 * rate;
+ break;
+ case 0x40:
+ *samplerate = 44100 >> half;
+ frame_size = 2 * (320 * rate / 147 + (frmsizecod & 1));
+ break;
+ case 0x80:
+ *samplerate = 32000 >> half;
+ frame_size = 6 * rate;
+ break;
+ default:
+ return 0;
+ }
+
+ unsigned char acmod = buf[6] >> 5;
+ unsigned char flags = ((((buf[6] & 0xf8) == 0x50) ? AC3_DOLBY : acmod) | ((buf[6] & lfeon[acmod]) ? AC3_LFE : 0));
+ switch (flags & AC3_CHANNEL_MASK) {
+ case AC3_MONO:
+ *channels = 1;
+ break;
+ case AC3_CHANNEL:
+ case AC3_STEREO:
+ case AC3_CHANNEL1:
+ case AC3_CHANNEL2:
+ case AC3_DOLBY:
+ *channels = 2;
+ break;
+ case AC3_2F1R:
+ case AC3_3F:
+ *channels = 3;
+ break;
+ case AC3_3F1R:
+ case AC3_2F2R:
+ *channels = 4;
+ break;
+ case AC3_3F2R:
+ *channels = 5;
+ break;
+ }
+ if (flags & AC3_LFE) { (*channels)++; }
+
+ *framelength = 1536;
+ return frame_size;
}
-int ParseEAC3Header(const BYTE *buf, int *samplerate, int *channels, int *framelength, int *frametype)
+int ParseEAC3Header(const BYTE* buf, int* samplerate, int* channels, int* framelength, int* frametype)
{
- if (*(WORD*)buf != AC3_SYNC_WORD) // syncword
- return 0;
+ if (*(WORD*)buf != AC3_SYNC_WORD) { // syncword
+ return 0;
+ }
- if (buf[5] >> 3 <= 10) // bsid
- return 0;
+ if (buf[5] >> 3 <= 10) { // bsid
+ return 0;
+ }
- static const int sample_rates[] = { 48000, 44100, 32000, 24000, 22050, 16000 };
- static const int channels_tbl[] = { 2, 1, 2, 3, 3, 4, 4, 5 };
- static const int samples_tbl[] = { 256, 512, 768, 1536 };
+ static const int sample_rates[] = { 48000, 44100, 32000, 24000, 22050, 16000 };
+ static const int channels_tbl[] = { 2, 1, 2, 3, 3, 4, 4, 5 };
+ static const int samples_tbl[] = { 256, 512, 768, 1536 };
- int frame_size = (((buf[2] & 0x03) << 8) + buf[3] + 1) * 2;
+ int frame_size = (((buf[2] & 0x03) << 8) + buf[3] + 1) * 2;
- int fscod = buf[4] >> 6;
- int fscod2 = (buf[4] >> 4) & 0x03;
+ int fscod = buf[4] >> 6;
+ int fscod2 = (buf[4] >> 4) & 0x03;
- if (fscod == 0x03 && fscod2 == 0x03)
- return 0;
+ if (fscod == 0x03 && fscod2 == 0x03) {
+ return 0;
+ }
- int acmod = (buf[4] >> 1) & 0x07;
- int lfeon = buf[4] & 0x01;
+ int acmod = (buf[4] >> 1) & 0x07;
+ int lfeon = buf[4] & 0x01;
- *frametype = (buf[2] >> 6) & 0x03;
- if (*frametype == EAC3_FRAME_TYPE_RESERVED)
- return 0;
- //int sub_stream_id = (buf[2] >> 3) & 0x07;
- *samplerate = sample_rates[fscod == 0x03 ? 3 + fscod2 : fscod];
- *channels = channels_tbl[acmod] + lfeon;
- *framelength = (fscod == 0x03) ? 1536 : samples_tbl[fscod2];
+ *frametype = (buf[2] >> 6) & 0x03;
+ if (*frametype == EAC3_FRAME_TYPE_RESERVED) {
+ return 0;
+ }
+ //int sub_stream_id = (buf[2] >> 3) & 0x07;
+ *samplerate = sample_rates[fscod == 0x03 ? 3 + fscod2 : fscod];
+ *channels = channels_tbl[acmod] + lfeon;
+ *framelength = (fscod == 0x03) ? 1536 : samples_tbl[fscod2];
- return frame_size;
+ return frame_size;
}
-int ParseMLPHeader(const BYTE *buf, int *samplerate, int *channels, int *framelength, WORD *bitdepth, bool *isTrueHD)
+int ParseMLPHeader(const BYTE* buf, int* samplerate, int* channels, int* framelength, WORD* bitdepth, bool* isTrueHD)
{
- static const int sampling_rates[] = { 48000, 96000, 192000, 0, 0, 0, 0, 0, 44100, 88200, 176400, 0, 0, 0, 0, 0 };
- static const unsigned char mlp_quants[16] = { 16, 20, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
- static const unsigned char mlp_channels[32] = { 1, 2, 3, 4, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 4,
- 5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
- static const int channel_count[13] = {// LR C LFE LRs LRvh LRc LRrs Cs Ts LRsd LRw Cvh LFE2
- 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 1
- };
-
- DWORD sync = *(DWORD*)(buf+4);
- if (sync == TRUEHD_SYNC_WORD) {
- *isTrueHD = true;
- } else if (sync == MLP_SYNC_WORD) {
- *isTrueHD = false;
- } else {
- return 0;
- }
-
- int frame_size = (((buf[0] << 8) | buf[1]) & 0xfff) * 2;
-
- if (*isTrueHD) {
- *bitdepth = 24;
- *samplerate = sampling_rates[buf[8] >> 4];
- *framelength = 40 << ((buf[8] >> 4) & 0x07);
- int chanmap_substream_1 = ((buf[ 9] & 0x0f) << 1) | (buf[10] >> 7);
- int chanmap_substream_2 = ((buf[10] & 0x1f) << 8) | buf[11];
- int channel_map = chanmap_substream_2 ? chanmap_substream_2 : chanmap_substream_1;
- *channels = 0;
- for (int i = 0; i < 13; ++i)
- *channels += channel_count[i] * ((channel_map >> i) & 1);
- } else {
- *bitdepth = mlp_quants[buf[8] >> 4];
- *samplerate = sampling_rates[buf[9] >> 4];
- *framelength = 40 << ((buf[9] >> 4) & 0x07);
- *channels = mlp_channels[buf[11] & 0x1f];
- }
-
- return frame_size;
+ static const int sampling_rates[] = { 48000, 96000, 192000, 0, 0, 0, 0, 0, 44100, 88200, 176400, 0, 0, 0, 0, 0 };
+ static const unsigned char mlp_quants[16] = { 16, 20, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+ static const unsigned char mlp_channels[32] = { 1, 2, 3, 4, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 4,
+ 5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ };
+ static const int channel_count[13] = {// LR C LFE LRs LRvh LRc LRrs Cs Ts LRsd LRw Cvh LFE2
+ 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 1
+ };
+
+ DWORD sync = *(DWORD*)(buf + 4);
+ if (sync == TRUEHD_SYNC_WORD) {
+ *isTrueHD = true;
+ } else if (sync == MLP_SYNC_WORD) {
+ *isTrueHD = false;
+ } else {
+ return 0;
+ }
+
+ int frame_size = (((buf[0] << 8) | buf[1]) & 0xfff) * 2;
+
+ if (*isTrueHD) {
+ *bitdepth = 24;
+ *samplerate = sampling_rates[buf[8] >> 4];
+ *framelength = 40 << ((buf[8] >> 4) & 0x07);
+ int chanmap_substream_1 = ((buf[ 9] & 0x0f) << 1) | (buf[10] >> 7);
+ int chanmap_substream_2 = ((buf[10] & 0x1f) << 8) | buf[11];
+ int channel_map = chanmap_substream_2 ? chanmap_substream_2 : chanmap_substream_1;
+ *channels = 0;
+ for (int i = 0; i < 13; ++i) {
+ *channels += channel_count[i] * ((channel_map >> i) & 1);
+ }
+ } else {
+ *bitdepth = mlp_quants[buf[8] >> 4];
+ *samplerate = sampling_rates[buf[9] >> 4];
+ *framelength = 40 << ((buf[9] >> 4) & 0x07);
+ *channels = mlp_channels[buf[11] & 0x1f];
+ }
+
+ return frame_size;
}
-int ParseHdmvLPCMHeader(const BYTE *buf, int *samplerate, int *channels)
+int ParseHdmvLPCMHeader(const BYTE* buf, int* samplerate, int* channels)
{
- *samplerate = 0;
- *channels = 0;
-
- int frame_size = buf[0] << 8 | buf[1];
- frame_size += 4; // add header size;
-
- static int channels_layout[] = {0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0};
- BYTE channel_layout = buf[2] >> 4;
- *channels = channels_layout[channel_layout];
- if (!*channels) {
- return 0;
- }
-
- static int bitspersample[] = {0, 16, 20, 24};
- int bits_per_sample = bitspersample[buf[3] >> 6];
- if (!(bits_per_sample == 16 || bits_per_sample == 24)) {
- return 0;
- }
-
- static int freq[] = {0, 48000, 0, 0, 96000, 192000};
- *samplerate = freq[buf[2] & 0x0f];
- if (!(*samplerate == 48000 || *samplerate == 96000 || *samplerate == 192000)) {
- return 0;
- }
-
- return frame_size;
+ *samplerate = 0;
+ *channels = 0;
+
+ int frame_size = buf[0] << 8 | buf[1];
+ frame_size += 4; // add header size;
+
+ static int channels_layout[] = {0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0};
+ BYTE channel_layout = buf[2] >> 4;
+ *channels = channels_layout[channel_layout];
+ if (!*channels) {
+ return 0;
+ }
+
+ static int bitspersample[] = {0, 16, 20, 24};
+ int bits_per_sample = bitspersample[buf[3] >> 6];
+ if (!(bits_per_sample == 16 || bits_per_sample == 24)) {
+ return 0;
+ }
+
+ static int freq[] = {0, 48000, 0, 0, 96000, 192000};
+ *samplerate = freq[buf[2] & 0x0f];
+ if (!(*samplerate == 48000 || *samplerate == 96000 || *samplerate == 192000)) {
+ return 0;
+ }
+
+ return frame_size;
}
DWORD GetDefChannelMask(WORD nChannels)
{
- switch (nChannels) {
- case 1: // 1.0 Mono (KSAUDIO_SPEAKER_MONO)
- return SPEAKER_FRONT_CENTER;
- case 2: // 2.0 Stereo (KSAUDIO_SPEAKER_STEREO)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
- case 3: // 2.1 Stereo
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_LOW_FREQUENCY;
- case 4: // 4.0 Quad (KSAUDIO_SPEAKER_QUAD)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
- case 5: // 5.0
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
- case 6: // 5.1 Side (KSAUDIO_SPEAKER_5POINT1_SURROUND)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
- | SPEAKER_LOW_FREQUENCY | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
- case 7: // 6.1 Side
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
- | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_CENTER
- | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
- case 8: // 7.1 Surround (KSAUDIO_SPEAKER_7POINT1_SURROUND)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
- | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
- | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
- case 10: // 9.1 Surround
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
- | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
- | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
- | SPEAKER_TOP_FRONT_LEFT | SPEAKER_TOP_FRONT_RIGHT;
- default:
- return 0;
- }
+ switch (nChannels) {
+ case 1: // 1.0 Mono (KSAUDIO_SPEAKER_MONO)
+ return SPEAKER_FRONT_CENTER;
+ case 2: // 2.0 Stereo (KSAUDIO_SPEAKER_STEREO)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
+ case 3: // 2.1 Stereo
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_LOW_FREQUENCY;
+ case 4: // 4.0 Quad (KSAUDIO_SPEAKER_QUAD)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
+ case 5: // 5.0
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
+ case 6: // 5.1 Side (KSAUDIO_SPEAKER_5POINT1_SURROUND)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
+ | SPEAKER_LOW_FREQUENCY | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
+ case 7: // 6.1 Side
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
+ | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_CENTER
+ | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
+ case 8: // 7.1 Surround (KSAUDIO_SPEAKER_7POINT1_SURROUND)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
+ | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
+ | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
+ case 10: // 9.1 Surround
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
+ | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
+ | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
+ | SPEAKER_TOP_FRONT_LEFT | SPEAKER_TOP_FRONT_RIGHT;
+ default:
+ return 0;
+ }
}
DWORD GetVorbisChannelMask(WORD nChannels)
{
- // for Vorbis and FLAC
- // http://xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9
- // http://flac.sourceforge.net/format.html#frame_header
- switch (nChannels) {
- case 1: // 1.0 Mono (KSAUDIO_SPEAKER_MONO)
- return SPEAKER_FRONT_CENTER;
- case 2: // 2.0 Stereo (KSAUDIO_SPEAKER_STEREO)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
- case 3: // 3.0
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT;
- case 4: // 4.0 Quad (KSAUDIO_SPEAKER_QUAD)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
- case 5: // 5.0
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
- case 6: // 5.1 (KSAUDIO_SPEAKER_5POINT1)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
- | SPEAKER_LOW_FREQUENCY;
- case 7: // 6.1 Side
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
- | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
- | SPEAKER_BACK_CENTER
- | SPEAKER_LOW_FREQUENCY;
- case 8: // 7.1 Surround (KSAUDIO_SPEAKER_7POINT1_SURROUND)
- return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
- | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
- | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
- | SPEAKER_LOW_FREQUENCY;
- default:
- return 0;
- }
+ // for Vorbis and FLAC
+ // http://xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9
+ // http://flac.sourceforge.net/format.html#frame_header
+ switch (nChannels) {
+ case 1: // 1.0 Mono (KSAUDIO_SPEAKER_MONO)
+ return SPEAKER_FRONT_CENTER;
+ case 2: // 2.0 Stereo (KSAUDIO_SPEAKER_STEREO)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
+ case 3: // 3.0
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT;
+ case 4: // 4.0 Quad (KSAUDIO_SPEAKER_QUAD)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
+ case 5: // 5.0
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
+ case 6: // 5.1 (KSAUDIO_SPEAKER_5POINT1)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
+ | SPEAKER_LOW_FREQUENCY;
+ case 7: // 6.1 Side
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
+ | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
+ | SPEAKER_BACK_CENTER
+ | SPEAKER_LOW_FREQUENCY;
+ case 8: // 7.1 Surround (KSAUDIO_SPEAKER_7POINT1_SURROUND)
+ return SPEAKER_FRONT_LEFT | SPEAKER_FRONT_CENTER | SPEAKER_FRONT_RIGHT
+ | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT
+ | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT
+ | SPEAKER_LOW_FREQUENCY;
+ default:
+ return 0;
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-06 03:24:24 +0300