Splits out the Opus multi-stream encoder and decoder
This commit is contained in:
Jean-Marc Valin
parent
8b906c102b
commit
ae0e2ca89f
5 changed files with 1030 additions and 939 deletions
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@ -37,31 +37,8 @@
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#include "float_cast.h"
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#include "os_support.h"
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typedef struct ChannelLayout {
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int nb_channels;
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int nb_streams;
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int nb_coupled_streams;
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unsigned char mapping[256];
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} ChannelLayout;
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struct OpusMSEncoder {
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ChannelLayout layout;
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int bitrate;
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/* Encoder states go here */
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};
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struct OpusMSDecoder {
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ChannelLayout layout;
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/* Decoder states go here */
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};
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#ifdef FIXED_POINT
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#define opus_encode_native opus_encode
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#else
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#define opus_encode_native opus_encode_float
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#endif
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static int validate_layout(const ChannelLayout *layout)
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int validate_layout(const ChannelLayout *layout)
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{
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int i, max_channel;
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@ -77,7 +54,7 @@ static int validate_layout(const ChannelLayout *layout)
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}
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static int get_left_channel(const ChannelLayout *layout, int stream_id, int prev)
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int get_left_channel(const ChannelLayout *layout, int stream_id, int prev)
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{
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int i;
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i = (prev<0) ? 0 : prev+1;
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@ -89,7 +66,7 @@ static int get_left_channel(const ChannelLayout *layout, int stream_id, int prev
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return -1;
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}
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static int get_right_channel(const ChannelLayout *layout, int stream_id, int prev)
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int get_right_channel(const ChannelLayout *layout, int stream_id, int prev)
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{
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int i;
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i = (prev<0) ? 0 : prev+1;
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@ -101,7 +78,7 @@ static int get_right_channel(const ChannelLayout *layout, int stream_id, int pre
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return -1;
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}
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static int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev)
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int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev)
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{
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int i;
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i = (prev<0) ? 0 : prev+1;
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@ -113,915 +90,3 @@ static int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev
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return -1;
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}
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static int validate_encoder_layout(const ChannelLayout *layout)
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{
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int s;
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for (s=0;s<layout->nb_streams;s++)
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{
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if (s < layout->nb_coupled_streams)
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{
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if (get_left_channel(layout, s, -1)==-1)
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return 0;
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if (get_right_channel(layout, s, -1)==-1)
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return 0;
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} else {
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if (get_mono_channel(layout, s, -1)==-1)
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return 0;
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}
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}
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return 1;
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}
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opus_int32 opus_multistream_encoder_get_size(int nb_streams, int nb_coupled_streams)
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{
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int coupled_size;
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int mono_size;
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if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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return align(sizeof(OpusMSEncoder))
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+ nb_coupled_streams * align(coupled_size)
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+ (nb_streams-nb_coupled_streams) * align(mono_size);
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}
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int opus_multistream_encoder_init(
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OpusMSEncoder *st,
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opus_int32 Fs,
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int channels,
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int streams,
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int coupled_streams,
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const unsigned char *mapping,
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int application
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)
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{
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int coupled_size;
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int mono_size;
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int i, ret;
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char *ptr;
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if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
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(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
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return OPUS_BAD_ARG;
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st->layout.nb_channels = channels;
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st->layout.nb_streams = streams;
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st->layout.nb_coupled_streams = coupled_streams;
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for (i=0;i<st->layout.nb_channels;i++)
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st->layout.mapping[i] = mapping[i];
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if (!validate_layout(&st->layout) || !validate_encoder_layout(&st->layout))
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return OPUS_BAD_ARG;
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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for (i=0;i<st->layout.nb_coupled_streams;i++)
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{
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ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 2, application);
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if(ret!=OPUS_OK)return ret;
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ptr += align(coupled_size);
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}
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for (;i<st->layout.nb_streams;i++)
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{
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ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 1, application);
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if(ret!=OPUS_OK)return ret;
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ptr += align(mono_size);
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}
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return OPUS_OK;
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}
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OpusMSEncoder *opus_multistream_encoder_create(
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opus_int32 Fs,
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int channels,
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int streams,
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int coupled_streams,
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const unsigned char *mapping,
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int application,
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int *error
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)
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{
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int ret;
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OpusMSEncoder *st;
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if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
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(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
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{
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if (error)
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*error = OPUS_BAD_ARG;
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return NULL;
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}
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st = (OpusMSEncoder *)opus_alloc(opus_multistream_encoder_get_size(streams, coupled_streams));
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if (st==NULL)
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{
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if (error)
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*error = OPUS_ALLOC_FAIL;
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return NULL;
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}
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ret = opus_multistream_encoder_init(st, Fs, channels, streams, coupled_streams, mapping, application);
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if (ret != OPUS_OK)
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{
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opus_free(st);
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st = NULL;
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}
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if (error)
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*error = ret;
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return st;
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}
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typedef void (*opus_copy_channel_in_func)(
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opus_val16 *dst,
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int dst_stride,
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const void *src,
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int src_stride,
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int src_channel,
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int frame_size
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);
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/* Max size in case the encoder decides to return three frames */
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#define MS_FRAME_TMP (3*1275+7)
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static int opus_multistream_encode_native
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(
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OpusMSEncoder *st,
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opus_copy_channel_in_func copy_channel_in,
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const void *pcm,
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int frame_size,
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unsigned char *data,
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opus_int32 max_data_bytes
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)
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{
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opus_int32 Fs;
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int coupled_size;
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int mono_size;
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int s;
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char *ptr;
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int tot_size;
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VARDECL(opus_val16, buf);
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unsigned char tmp_data[MS_FRAME_TMP];
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OpusRepacketizer rp;
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ALLOC_STACK;
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
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opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs));
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/* Validate frame_size before using it to allocate stack space.
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This mirrors the checks in opus_encode[_float](). */
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if (400*frame_size != Fs && 200*frame_size != Fs &&
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100*frame_size != Fs && 50*frame_size != Fs &&
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25*frame_size != Fs && 50*frame_size != 3*Fs)
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{
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RESTORE_STACK;
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return OPUS_BAD_ARG;
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}
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ALLOC(buf, 2*frame_size, opus_val16);
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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if (max_data_bytes < 4*st->layout.nb_streams-1)
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{
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RESTORE_STACK;
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return OPUS_BUFFER_TOO_SMALL;
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}
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/* Counting ToC */
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tot_size = 0;
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for (s=0;s<st->layout.nb_streams;s++)
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{
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OpusEncoder *enc;
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int len;
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int curr_max;
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opus_repacketizer_init(&rp);
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enc = (OpusEncoder*)ptr;
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if (s < st->layout.nb_coupled_streams)
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{
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int left, right;
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left = get_left_channel(&st->layout, s, -1);
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right = get_right_channel(&st->layout, s, -1);
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(*copy_channel_in)(buf, 2,
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pcm, st->layout.nb_channels, left, frame_size);
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(*copy_channel_in)(buf+1, 2,
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pcm, st->layout.nb_channels, right, frame_size);
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ptr += align(coupled_size);
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} else {
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int chan = get_mono_channel(&st->layout, s, -1);
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(*copy_channel_in)(buf, 1,
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pcm, st->layout.nb_channels, chan, frame_size);
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ptr += align(mono_size);
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}
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/* number of bytes left (+Toc) */
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curr_max = max_data_bytes - tot_size;
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/* Reserve three bytes for the last stream and four for the others */
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curr_max -= IMAX(0,4*(st->layout.nb_streams-s-1)-1);
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curr_max = IMIN(curr_max,MS_FRAME_TMP);
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len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max);
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if (len<0)
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{
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RESTORE_STACK;
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return len;
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}
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/* We need to use the repacketizer to add the self-delimiting lengths
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while taking into account the fact that the encoder can now return
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more than one frame at a time (e.g. 60 ms CELT-only) */
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opus_repacketizer_cat(&rp, tmp_data, len);
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len = opus_repacketizer_out_range_impl(&rp, 0, opus_repacketizer_get_nb_frames(&rp), data, max_data_bytes-tot_size, s != st->layout.nb_streams-1);
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data += len;
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tot_size += len;
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}
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RESTORE_STACK;
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return tot_size;
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}
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#if !defined(DISABLE_FLOAT_API)
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static void opus_copy_channel_in_float(
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opus_val16 *dst,
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int dst_stride,
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const void *src,
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int src_stride,
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int src_channel,
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int frame_size
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)
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{
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const float *float_src;
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int i;
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float_src = (const float *)src;
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for (i=0;i<frame_size;i++)
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#if defined(FIXED_POINT)
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dst[i*dst_stride] = FLOAT2INT16(float_src[i*src_stride+src_channel]);
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#else
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dst[i*dst_stride] = float_src[i*src_stride+src_channel];
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#endif
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}
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#endif
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static void opus_copy_channel_in_short(
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opus_val16 *dst,
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int dst_stride,
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const void *src,
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int src_stride,
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int src_channel,
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int frame_size
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)
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{
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const opus_int16 *short_src;
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int i;
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short_src = (const opus_int16 *)src;
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for (i=0;i<frame_size;i++)
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#if defined(FIXED_POINT)
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dst[i*dst_stride] = short_src[i*src_stride+src_channel];
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#else
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dst[i*dst_stride] = (1/32768.f)*short_src[i*src_stride+src_channel];
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#endif
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}
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#ifdef FIXED_POINT
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int opus_multistream_encode(
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OpusMSEncoder *st,
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const opus_val16 *pcm,
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int frame_size,
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unsigned char *data,
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opus_int32 max_data_bytes
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)
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{
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return opus_multistream_encode_native(st, opus_copy_channel_in_short,
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pcm, frame_size, data, max_data_bytes);
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}
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#ifndef DISABLE_FLOAT_API
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int opus_multistream_encode_float(
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OpusMSEncoder *st,
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const float *pcm,
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int frame_size,
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unsigned char *data,
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opus_int32 max_data_bytes
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)
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{
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return opus_multistream_encode_native(st, opus_copy_channel_in_float,
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pcm, frame_size, data, max_data_bytes);
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}
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#endif
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#else
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int opus_multistream_encode_float
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(
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OpusMSEncoder *st,
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const opus_val16 *pcm,
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int frame_size,
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unsigned char *data,
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opus_int32 max_data_bytes
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)
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{
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return opus_multistream_encode_native(st, opus_copy_channel_in_float,
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pcm, frame_size, data, max_data_bytes);
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}
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int opus_multistream_encode(
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OpusMSEncoder *st,
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const opus_int16 *pcm,
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int frame_size,
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unsigned char *data,
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opus_int32 max_data_bytes
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)
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{
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return opus_multistream_encode_native(st, opus_copy_channel_in_short,
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pcm, frame_size, data, max_data_bytes);
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}
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#endif
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int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...)
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{
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va_list ap;
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int coupled_size, mono_size;
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char *ptr;
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int ret = OPUS_OK;
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va_start(ap, request);
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coupled_size = opus_encoder_get_size(2);
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mono_size = opus_encoder_get_size(1);
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ptr = (char*)st + align(sizeof(OpusMSEncoder));
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switch (request)
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{
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case OPUS_SET_BITRATE_REQUEST:
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{
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int chan, s;
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opus_int32 value = va_arg(ap, opus_int32);
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chan = st->layout.nb_streams + st->layout.nb_coupled_streams;
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value /= chan;
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for (s=0;s<st->layout.nb_streams;s++)
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{
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OpusEncoder *enc;
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enc = (OpusEncoder*)ptr;
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if (s < st->layout.nb_coupled_streams)
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ptr += align(coupled_size);
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else
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ptr += align(mono_size);
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opus_encoder_ctl(enc, request, value * (s < st->layout.nb_coupled_streams ? 2 : 1));
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}
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}
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break;
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case OPUS_GET_BITRATE_REQUEST:
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{
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int s;
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opus_int32 *value = va_arg(ap, opus_int32*);
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*value = 0;
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for (s=0;s<st->layout.nb_streams;s++)
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{
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opus_int32 rate;
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OpusEncoder *enc;
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enc = (OpusEncoder*)ptr;
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if (s < st->layout.nb_coupled_streams)
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ptr += align(coupled_size);
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else
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ptr += align(mono_size);
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opus_encoder_ctl(enc, request, &rate);
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*value += rate;
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}
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}
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break;
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case OPUS_GET_LSB_DEPTH_REQUEST:
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case OPUS_GET_VBR_REQUEST:
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case OPUS_GET_APPLICATION_REQUEST:
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case OPUS_GET_BANDWIDTH_REQUEST:
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case OPUS_GET_COMPLEXITY_REQUEST:
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case OPUS_GET_PACKET_LOSS_PERC_REQUEST:
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case OPUS_GET_DTX_REQUEST:
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case OPUS_GET_VOICE_RATIO_REQUEST:
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case OPUS_GET_VBR_CONSTRAINT_REQUEST:
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case OPUS_GET_SIGNAL_REQUEST:
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case OPUS_GET_LOOKAHEAD_REQUEST:
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case OPUS_GET_SAMPLE_RATE_REQUEST:
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case OPUS_GET_INBAND_FEC_REQUEST:
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case OPUS_GET_FORCE_CHANNELS_REQUEST:
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{
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OpusEncoder *enc;
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/* For int32* GET params, just query the first stream */
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opus_int32 *value = va_arg(ap, opus_int32*);
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enc = (OpusEncoder*)ptr;
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ret = opus_encoder_ctl(enc, request, value);
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}
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break;
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case OPUS_GET_FINAL_RANGE_REQUEST:
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{
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int s;
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opus_uint32 *value = va_arg(ap, opus_uint32*);
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opus_uint32 tmp;
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*value=0;
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for (s=0;s<st->layout.nb_streams;s++)
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{
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OpusEncoder *enc;
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enc = (OpusEncoder*)ptr;
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if (s < st->layout.nb_coupled_streams)
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ptr += align(coupled_size);
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else
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ptr += align(mono_size);
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ret = opus_encoder_ctl(enc, request, &tmp);
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if (ret != OPUS_OK) break;
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*value ^= tmp;
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}
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}
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break;
|
||||
case OPUS_SET_LSB_DEPTH_REQUEST:
|
||||
case OPUS_SET_COMPLEXITY_REQUEST:
|
||||
case OPUS_SET_VBR_REQUEST:
|
||||
case OPUS_SET_VBR_CONSTRAINT_REQUEST:
|
||||
case OPUS_SET_BANDWIDTH_REQUEST:
|
||||
case OPUS_SET_SIGNAL_REQUEST:
|
||||
case OPUS_SET_APPLICATION_REQUEST:
|
||||
case OPUS_SET_INBAND_FEC_REQUEST:
|
||||
case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
|
||||
case OPUS_SET_DTX_REQUEST:
|
||||
case OPUS_SET_FORCE_MODE_REQUEST:
|
||||
case OPUS_SET_FORCE_CHANNELS_REQUEST:
|
||||
{
|
||||
int s;
|
||||
/* This works for int32 params */
|
||||
opus_int32 value = va_arg(ap, opus_int32);
|
||||
for (s=0;s<st->layout.nb_streams;s++)
|
||||
{
|
||||
OpusEncoder *enc;
|
||||
|
||||
enc = (OpusEncoder*)ptr;
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
ret = opus_encoder_ctl(enc, request, value);
|
||||
if (ret != OPUS_OK)
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST:
|
||||
{
|
||||
int s;
|
||||
opus_int32 stream_id;
|
||||
OpusEncoder **value;
|
||||
stream_id = va_arg(ap, opus_int32);
|
||||
if (stream_id<0 || stream_id >= st->layout.nb_streams)
|
||||
ret = OPUS_BAD_ARG;
|
||||
value = va_arg(ap, OpusEncoder**);
|
||||
for (s=0;s<stream_id;s++)
|
||||
{
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
}
|
||||
*value = (OpusEncoder*)ptr;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ret = OPUS_UNIMPLEMENTED;
|
||||
break;
|
||||
}
|
||||
|
||||
va_end(ap);
|
||||
return ret;
|
||||
}
|
||||
|
||||
void opus_multistream_encoder_destroy(OpusMSEncoder *st)
|
||||
{
|
||||
opus_free(st);
|
||||
}
|
||||
|
||||
|
||||
/* DECODER */
|
||||
|
||||
opus_int32 opus_multistream_decoder_get_size(int nb_streams, int nb_coupled_streams)
|
||||
{
|
||||
int coupled_size;
|
||||
int mono_size;
|
||||
|
||||
if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
|
||||
coupled_size = opus_decoder_get_size(2);
|
||||
mono_size = opus_decoder_get_size(1);
|
||||
return align(sizeof(OpusMSDecoder))
|
||||
+ nb_coupled_streams * align(coupled_size)
|
||||
+ (nb_streams-nb_coupled_streams) * align(mono_size);
|
||||
}
|
||||
|
||||
int opus_multistream_decoder_init(
|
||||
OpusMSDecoder *st,
|
||||
opus_int32 Fs,
|
||||
int channels,
|
||||
int streams,
|
||||
int coupled_streams,
|
||||
const unsigned char *mapping
|
||||
)
|
||||
{
|
||||
int coupled_size;
|
||||
int mono_size;
|
||||
int i, ret;
|
||||
char *ptr;
|
||||
|
||||
if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
|
||||
(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
|
||||
return OPUS_BAD_ARG;
|
||||
|
||||
st->layout.nb_channels = channels;
|
||||
st->layout.nb_streams = streams;
|
||||
st->layout.nb_coupled_streams = coupled_streams;
|
||||
|
||||
for (i=0;i<st->layout.nb_channels;i++)
|
||||
st->layout.mapping[i] = mapping[i];
|
||||
if (!validate_layout(&st->layout))
|
||||
return OPUS_BAD_ARG;
|
||||
|
||||
ptr = (char*)st + align(sizeof(OpusMSDecoder));
|
||||
coupled_size = opus_decoder_get_size(2);
|
||||
mono_size = opus_decoder_get_size(1);
|
||||
|
||||
for (i=0;i<st->layout.nb_coupled_streams;i++)
|
||||
{
|
||||
ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 2);
|
||||
if(ret!=OPUS_OK)return ret;
|
||||
ptr += align(coupled_size);
|
||||
}
|
||||
for (;i<st->layout.nb_streams;i++)
|
||||
{
|
||||
ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 1);
|
||||
if(ret!=OPUS_OK)return ret;
|
||||
ptr += align(mono_size);
|
||||
}
|
||||
return OPUS_OK;
|
||||
}
|
||||
|
||||
|
||||
OpusMSDecoder *opus_multistream_decoder_create(
|
||||
opus_int32 Fs,
|
||||
int channels,
|
||||
int streams,
|
||||
int coupled_streams,
|
||||
const unsigned char *mapping,
|
||||
int *error
|
||||
)
|
||||
{
|
||||
int ret;
|
||||
OpusMSDecoder *st;
|
||||
if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
|
||||
(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
|
||||
{
|
||||
if (error)
|
||||
*error = OPUS_BAD_ARG;
|
||||
return NULL;
|
||||
}
|
||||
st = (OpusMSDecoder *)opus_alloc(opus_multistream_decoder_get_size(streams, coupled_streams));
|
||||
if (st==NULL)
|
||||
{
|
||||
if (error)
|
||||
*error = OPUS_ALLOC_FAIL;
|
||||
return NULL;
|
||||
}
|
||||
ret = opus_multistream_decoder_init(st, Fs, channels, streams, coupled_streams, mapping);
|
||||
if (error)
|
||||
*error = ret;
|
||||
if (ret != OPUS_OK)
|
||||
{
|
||||
opus_free(st);
|
||||
st = NULL;
|
||||
}
|
||||
return st;
|
||||
}
|
||||
|
||||
typedef void (*opus_copy_channel_out_func)(
|
||||
void *dst,
|
||||
int dst_stride,
|
||||
int dst_channel,
|
||||
const opus_val16 *src,
|
||||
int src_stride,
|
||||
int frame_size
|
||||
);
|
||||
|
||||
static int opus_multistream_decode_native(
|
||||
OpusMSDecoder *st,
|
||||
const unsigned char *data,
|
||||
opus_int32 len,
|
||||
void *pcm,
|
||||
opus_copy_channel_out_func copy_channel_out,
|
||||
int frame_size,
|
||||
int decode_fec
|
||||
)
|
||||
{
|
||||
opus_int32 Fs;
|
||||
int coupled_size;
|
||||
int mono_size;
|
||||
int s, c;
|
||||
char *ptr;
|
||||
int do_plc=0;
|
||||
VARDECL(opus_val16, buf);
|
||||
ALLOC_STACK;
|
||||
|
||||
/* Limit frame_size to avoid excessive stack allocations. */
|
||||
opus_multistream_decoder_ctl(st, OPUS_GET_SAMPLE_RATE(&Fs));
|
||||
frame_size = IMIN(frame_size, Fs/25*3);
|
||||
ALLOC(buf, 2*frame_size, opus_val16);
|
||||
ptr = (char*)st + align(sizeof(OpusMSDecoder));
|
||||
coupled_size = opus_decoder_get_size(2);
|
||||
mono_size = opus_decoder_get_size(1);
|
||||
|
||||
if (len==0)
|
||||
do_plc = 1;
|
||||
if (len < 0)
|
||||
return OPUS_BAD_ARG;
|
||||
if (!do_plc && len < 2*st->layout.nb_streams-1)
|
||||
return OPUS_INVALID_PACKET;
|
||||
for (s=0;s<st->layout.nb_streams;s++)
|
||||
{
|
||||
OpusDecoder *dec;
|
||||
int packet_offset, ret;
|
||||
|
||||
dec = (OpusDecoder*)ptr;
|
||||
ptr += (s < st->layout.nb_coupled_streams) ? align(coupled_size) : align(mono_size);
|
||||
|
||||
if (!do_plc && len<=0)
|
||||
{
|
||||
RESTORE_STACK;
|
||||
return OPUS_INVALID_PACKET;
|
||||
}
|
||||
packet_offset = 0;
|
||||
ret = opus_decode_native(dec, data, len, buf, frame_size, decode_fec, s!=st->layout.nb_streams-1, &packet_offset);
|
||||
data += packet_offset;
|
||||
len -= packet_offset;
|
||||
if (ret > frame_size)
|
||||
{
|
||||
RESTORE_STACK;
|
||||
return OPUS_BUFFER_TOO_SMALL;
|
||||
}
|
||||
if (s>0 && ret != frame_size)
|
||||
{
|
||||
RESTORE_STACK;
|
||||
return OPUS_INVALID_PACKET;
|
||||
}
|
||||
if (ret <= 0)
|
||||
{
|
||||
RESTORE_STACK;
|
||||
return ret;
|
||||
}
|
||||
frame_size = ret;
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
{
|
||||
int chan, prev;
|
||||
prev = -1;
|
||||
/* Copy "left" audio to the channel(s) where it belongs */
|
||||
while ( (chan = get_left_channel(&st->layout, s, prev)) != -1)
|
||||
{
|
||||
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
|
||||
buf, 2, frame_size);
|
||||
prev = chan;
|
||||
}
|
||||
prev = -1;
|
||||
/* Copy "right" audio to the channel(s) where it belongs */
|
||||
while ( (chan = get_right_channel(&st->layout, s, prev)) != -1)
|
||||
{
|
||||
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
|
||||
buf+1, 2, frame_size);
|
||||
prev = chan;
|
||||
}
|
||||
} else {
|
||||
int chan, prev;
|
||||
prev = -1;
|
||||
/* Copy audio to the channel(s) where it belongs */
|
||||
while ( (chan = get_mono_channel(&st->layout, s, prev)) != -1)
|
||||
{
|
||||
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
|
||||
buf, 1, frame_size);
|
||||
prev = chan;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Handle muted channels */
|
||||
for (c=0;c<st->layout.nb_channels;c++)
|
||||
{
|
||||
if (st->layout.mapping[c] == 255)
|
||||
{
|
||||
(*copy_channel_out)(pcm, st->layout.nb_channels, c,
|
||||
NULL, 0, frame_size);
|
||||
}
|
||||
}
|
||||
RESTORE_STACK;
|
||||
return frame_size;
|
||||
}
|
||||
|
||||
#if !defined(DISABLE_FLOAT_API)
|
||||
static void opus_copy_channel_out_float(
|
||||
void *dst,
|
||||
int dst_stride,
|
||||
int dst_channel,
|
||||
const opus_val16 *src,
|
||||
int src_stride,
|
||||
int frame_size
|
||||
)
|
||||
{
|
||||
float *float_dst;
|
||||
int i;
|
||||
float_dst = (float*)dst;
|
||||
if (src != NULL)
|
||||
{
|
||||
for (i=0;i<frame_size;i++)
|
||||
#if defined(FIXED_POINT)
|
||||
float_dst[i*dst_stride+dst_channel] = (1/32768.f)*src[i*src_stride];
|
||||
#else
|
||||
float_dst[i*dst_stride+dst_channel] = src[i*src_stride];
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
for (i=0;i<frame_size;i++)
|
||||
float_dst[i*dst_stride+dst_channel] = 0;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
static void opus_copy_channel_out_short(
|
||||
void *dst,
|
||||
int dst_stride,
|
||||
int dst_channel,
|
||||
const opus_val16 *src,
|
||||
int src_stride,
|
||||
int frame_size
|
||||
)
|
||||
{
|
||||
opus_int16 *short_dst;
|
||||
int i;
|
||||
short_dst = (opus_int16*)dst;
|
||||
if (src != NULL)
|
||||
{
|
||||
for (i=0;i<frame_size;i++)
|
||||
#if defined(FIXED_POINT)
|
||||
short_dst[i*dst_stride+dst_channel] = src[i*src_stride];
|
||||
#else
|
||||
short_dst[i*dst_stride+dst_channel] = FLOAT2INT16(src[i*src_stride]);
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
for (i=0;i<frame_size;i++)
|
||||
short_dst[i*dst_stride+dst_channel] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
#ifdef FIXED_POINT
|
||||
int opus_multistream_decode(
|
||||
OpusMSDecoder *st,
|
||||
const unsigned char *data,
|
||||
opus_int32 len,
|
||||
opus_int16 *pcm,
|
||||
int frame_size,
|
||||
int decode_fec
|
||||
)
|
||||
{
|
||||
return opus_multistream_decode_native(st, data, len,
|
||||
pcm, opus_copy_channel_out_short, frame_size, decode_fec);
|
||||
}
|
||||
|
||||
#ifndef DISABLE_FLOAT_API
|
||||
int opus_multistream_decode_float(OpusMSDecoder *st, const unsigned char *data,
|
||||
opus_int32 len, float *pcm, int frame_size, int decode_fec)
|
||||
{
|
||||
return opus_multistream_decode_native(st, data, len,
|
||||
pcm, opus_copy_channel_out_float, frame_size, decode_fec);
|
||||
}
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
int opus_multistream_decode(OpusMSDecoder *st, const unsigned char *data,
|
||||
opus_int32 len, opus_int16 *pcm, int frame_size, int decode_fec)
|
||||
{
|
||||
return opus_multistream_decode_native(st, data, len,
|
||||
pcm, opus_copy_channel_out_short, frame_size, decode_fec);
|
||||
}
|
||||
|
||||
int opus_multistream_decode_float(
|
||||
OpusMSDecoder *st,
|
||||
const unsigned char *data,
|
||||
opus_int32 len,
|
||||
float *pcm,
|
||||
int frame_size,
|
||||
int decode_fec
|
||||
)
|
||||
{
|
||||
return opus_multistream_decode_native(st, data, len,
|
||||
pcm, opus_copy_channel_out_float, frame_size, decode_fec);
|
||||
}
|
||||
#endif
|
||||
|
||||
int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...)
|
||||
{
|
||||
va_list ap;
|
||||
int coupled_size, mono_size;
|
||||
char *ptr;
|
||||
int ret = OPUS_OK;
|
||||
|
||||
va_start(ap, request);
|
||||
|
||||
coupled_size = opus_decoder_get_size(2);
|
||||
mono_size = opus_decoder_get_size(1);
|
||||
ptr = (char*)st + align(sizeof(OpusMSDecoder));
|
||||
switch (request)
|
||||
{
|
||||
case OPUS_GET_BANDWIDTH_REQUEST:
|
||||
case OPUS_GET_SAMPLE_RATE_REQUEST:
|
||||
{
|
||||
OpusDecoder *dec;
|
||||
/* For int32* GET params, just query the first stream */
|
||||
opus_int32 *value = va_arg(ap, opus_int32*);
|
||||
dec = (OpusDecoder*)ptr;
|
||||
ret = opus_decoder_ctl(dec, request, value);
|
||||
}
|
||||
break;
|
||||
case OPUS_GET_FINAL_RANGE_REQUEST:
|
||||
{
|
||||
int s;
|
||||
opus_uint32 *value = va_arg(ap, opus_uint32*);
|
||||
opus_uint32 tmp;
|
||||
*value = 0;
|
||||
for (s=0;s<st->layout.nb_streams;s++)
|
||||
{
|
||||
OpusDecoder *dec;
|
||||
dec = (OpusDecoder*)ptr;
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
ret = opus_decoder_ctl(dec, request, &tmp);
|
||||
if (ret != OPUS_OK) break;
|
||||
*value ^= tmp;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case OPUS_RESET_STATE:
|
||||
{
|
||||
int s;
|
||||
for (s=0;s<st->layout.nb_streams;s++)
|
||||
{
|
||||
OpusDecoder *dec;
|
||||
|
||||
dec = (OpusDecoder*)ptr;
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
ret = opus_decoder_ctl(dec, OPUS_RESET_STATE);
|
||||
if (ret != OPUS_OK)
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST:
|
||||
{
|
||||
int s;
|
||||
opus_int32 stream_id;
|
||||
OpusDecoder **value;
|
||||
stream_id = va_arg(ap, opus_int32);
|
||||
if (stream_id<0 || stream_id >= st->layout.nb_streams)
|
||||
ret = OPUS_BAD_ARG;
|
||||
value = va_arg(ap, OpusDecoder**);
|
||||
for (s=0;s<stream_id;s++)
|
||||
{
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
}
|
||||
*value = (OpusDecoder*)ptr;
|
||||
}
|
||||
break;
|
||||
case OPUS_SET_GAIN_REQUEST:
|
||||
{
|
||||
int s;
|
||||
/* This works for int32 params */
|
||||
opus_int32 value = va_arg(ap, opus_int32);
|
||||
for (s=0;s<st->layout.nb_streams;s++)
|
||||
{
|
||||
OpusDecoder *dec;
|
||||
|
||||
dec = (OpusDecoder*)ptr;
|
||||
if (s < st->layout.nb_coupled_streams)
|
||||
ptr += align(coupled_size);
|
||||
else
|
||||
ptr += align(mono_size);
|
||||
ret = opus_decoder_ctl(dec, request, value);
|
||||
if (ret != OPUS_OK)
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ret = OPUS_UNIMPLEMENTED;
|
||||
break;
|
||||
}
|
||||
|
||||
va_end(ap);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
void opus_multistream_decoder_destroy(OpusMSDecoder *st)
|
||||
{
|
||||
opus_free(st);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue