summaryrefslogtreecommitdiff
path: root/drivers/opus/repacketizer.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/opus/repacketizer.c')
-rw-r--r--drivers/opus/repacketizer.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/drivers/opus/repacketizer.c b/drivers/opus/repacketizer.c
deleted file mode 100644
index 3822f9c86f..0000000000
--- a/drivers/opus/repacketizer.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/* Copyright (c) 2011 Xiph.Org Foundation
- Written by Jean-Marc Valin */
-/*
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- - Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#include "opus/opus_config.h"
-
-#include "opus/opus.h"
-#include "opus/opus_private.h"
-#include "opus/celt/os_support.h"
-
-
-int opus_repacketizer_get_size(void)
-{
- return sizeof(OpusRepacketizer);
-}
-
-OpusRepacketizer *opus_repacketizer_init(OpusRepacketizer *rp)
-{
- rp->nb_frames = 0;
- return rp;
-}
-
-OpusRepacketizer *opus_repacketizer_create(void)
-{
- OpusRepacketizer *rp;
- rp=(OpusRepacketizer *)opus_alloc(opus_repacketizer_get_size());
- if(rp==NULL)return NULL;
- return opus_repacketizer_init(rp);
-}
-
-void opus_repacketizer_destroy(OpusRepacketizer *rp)
-{
- opus_free(rp);
-}
-
-static int opus_repacketizer_cat_impl(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len, int self_delimited)
-{
- unsigned char tmp_toc;
- int curr_nb_frames,ret;
- /* Set of check ToC */
- if (len<1) return OPUS_INVALID_PACKET;
- if (rp->nb_frames == 0)
- {
- rp->toc = data[0];
- rp->framesize = opus_packet_get_samples_per_frame(data, 8000);
- } else if ((rp->toc&0xFC) != (data[0]&0xFC))
- {
- /*fprintf(stderr, "toc mismatch: 0x%x vs 0x%x\n", rp->toc, data[0]);*/
- return OPUS_INVALID_PACKET;
- }
- curr_nb_frames = opus_packet_get_nb_frames(data, len);
- if(curr_nb_frames<1) return OPUS_INVALID_PACKET;
-
- /* Check the 120 ms maximum packet size */
- if ((curr_nb_frames+rp->nb_frames)*rp->framesize > 960)
- {
- return OPUS_INVALID_PACKET;
- }
-
- ret=opus_packet_parse_impl(data, len, self_delimited, &tmp_toc, &rp->frames[rp->nb_frames], &rp->len[rp->nb_frames], NULL, NULL);
- if(ret<1)return ret;
-
- rp->nb_frames += curr_nb_frames;
- return OPUS_OK;
-}
-
-int opus_repacketizer_cat(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len)
-{
- return opus_repacketizer_cat_impl(rp, data, len, 0);
-}
-
-int opus_repacketizer_get_nb_frames(OpusRepacketizer *rp)
-{
- return rp->nb_frames;
-}
-
-opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
- unsigned char *data, opus_int32 maxlen, int self_delimited, int pad)
-{
- int i, count;
- opus_int32 tot_size;
- opus_int16 *len;
- const unsigned char **frames;
- unsigned char * ptr;
-
- if (begin<0 || begin>=end || end>rp->nb_frames)
- {
- /*fprintf(stderr, "%d %d %d\n", begin, end, rp->nb_frames);*/
- return OPUS_BAD_ARG;
- }
- count = end-begin;
-
- len = rp->len+begin;
- frames = rp->frames+begin;
- if (self_delimited)
- tot_size = 1 + (len[count-1]>=252);
- else
- tot_size = 0;
-
- ptr = data;
- if (count==1)
- {
- /* Code 0 */
- tot_size += len[0]+1;
- if (tot_size > maxlen)
- return OPUS_BUFFER_TOO_SMALL;
- *ptr++ = rp->toc&0xFC;
- } else if (count==2)
- {
- if (len[1] == len[0])
- {
- /* Code 1 */
- tot_size += 2*len[0]+1;
- if (tot_size > maxlen)
- return OPUS_BUFFER_TOO_SMALL;
- *ptr++ = (rp->toc&0xFC) | 0x1;
- } else {
- /* Code 2 */
- tot_size += len[0]+len[1]+2+(len[0]>=252);
- if (tot_size > maxlen)
- return OPUS_BUFFER_TOO_SMALL;
- *ptr++ = (rp->toc&0xFC) | 0x2;
- ptr += encode_size(len[0], ptr);
- }
- }
- if (count > 2 || (pad && tot_size < maxlen))
- {
- /* Code 3 */
- int vbr;
- int pad_amount=0;
-
- /* Restart the process for the padding case */
- ptr = data;
- if (self_delimited)
- tot_size = 1 + (len[count-1]>=252);
- else
- tot_size = 0;
- vbr = 0;
- for (i=1;i<count;i++)
- {
- if (len[i] != len[0])
- {
- vbr=1;
- break;
- }
- }
- if (vbr)
- {
- tot_size += 2;
- for (i=0;i<count-1;i++)
- tot_size += 1 + (len[i]>=252) + len[i];
- tot_size += len[count-1];
-
- if (tot_size > maxlen)
- return OPUS_BUFFER_TOO_SMALL;
- *ptr++ = (rp->toc&0xFC) | 0x3;
- *ptr++ = count | 0x80;
- } else {
- tot_size += count*len[0]+2;
- if (tot_size > maxlen)
- return OPUS_BUFFER_TOO_SMALL;
- *ptr++ = (rp->toc&0xFC) | 0x3;
- *ptr++ = count;
- }
- pad_amount = pad ? (maxlen-tot_size) : 0;
- if (pad_amount != 0)
- {
- int nb_255s;
- data[1] |= 0x40;
- nb_255s = (pad_amount-1)/255;
- for (i=0;i<nb_255s;i++)
- *ptr++ = 255;
- *ptr++ = pad_amount-255*nb_255s-1;
- tot_size += pad_amount;
- }
- if (vbr)
- {
- for (i=0;i<count-1;i++)
- ptr += encode_size(len[i], ptr);
- }
- }
- if (self_delimited) {
- int sdlen = encode_size(len[count-1], ptr);
- ptr += sdlen;
- }
- /* Copy the actual data */
- for (i=0;i<count;i++)
- {
- /* Using OPUS_MOVE() instead of OPUS_COPY() in case we're doing in-place
- padding from opus_packet_pad or opus_packet_unpad(). */
- celt_assert(frames[i] + len[i] <= data || ptr <= frames[i]);
- OPUS_MOVE(ptr, frames[i], len[i]);
- ptr += len[i];
- }
- if (pad)
- {
- /* Fill padding with zeros. */
- while (ptr<data+maxlen)
- *ptr++=0;
- }
- return tot_size;
-}
-
-opus_int32 opus_repacketizer_out_range(OpusRepacketizer *rp, int begin, int end, unsigned char *data, opus_int32 maxlen)
-{
- return opus_repacketizer_out_range_impl(rp, begin, end, data, maxlen, 0, 0);
-}
-
-opus_int32 opus_repacketizer_out(OpusRepacketizer *rp, unsigned char *data, opus_int32 maxlen)
-{
- return opus_repacketizer_out_range_impl(rp, 0, rp->nb_frames, data, maxlen, 0, 0);
-}
-
-int opus_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len)
-{
- OpusRepacketizer rp;
- opus_int32 ret;
- if (len < 1)
- return OPUS_BAD_ARG;
- if (len==new_len)
- return OPUS_OK;
- else if (len > new_len)
- return OPUS_BAD_ARG;
- opus_repacketizer_init(&rp);
- /* Moving payload to the end of the packet so we can do in-place padding */
- OPUS_MOVE(data+new_len-len, data, len);
- opus_repacketizer_cat(&rp, data+new_len-len, len);
- ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, new_len, 0, 1);
- if (ret > 0)
- return OPUS_OK;
- else
- return ret;
-}
-
-opus_int32 opus_packet_unpad(unsigned char *data, opus_int32 len)
-{
- OpusRepacketizer rp;
- opus_int32 ret;
- if (len < 1)
- return OPUS_BAD_ARG;
- opus_repacketizer_init(&rp);
- ret = opus_repacketizer_cat(&rp, data, len);
- if (ret < 0)
- return ret;
- ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, len, 0, 0);
- celt_assert(ret > 0 && ret <= len);
- return ret;
-}
-
-int opus_multistream_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len, int nb_streams)
-{
- int s;
- int count;
- unsigned char toc;
- opus_int16 size[48];
- opus_int32 packet_offset;
- opus_int32 amount;
-
- if (len < 1)
- return OPUS_BAD_ARG;
- if (len==new_len)
- return OPUS_OK;
- else if (len > new_len)
- return OPUS_BAD_ARG;
- amount = new_len - len;
- /* Seek to last stream */
- for (s=0;s<nb_streams-1;s++)
- {
- if (len<=0)
- return OPUS_INVALID_PACKET;
- count = opus_packet_parse_impl(data, len, 1, &toc, NULL,
- size, NULL, &packet_offset);
- if (count<0)
- return count;
- data += packet_offset;
- len -= packet_offset;
- }
- return opus_packet_pad(data, len, len+amount);
-}
-
-opus_int32 opus_multistream_packet_unpad(unsigned char *data, opus_int32 len, int nb_streams)
-{
- int s;
- unsigned char toc;
- opus_int16 size[48];
- opus_int32 packet_offset;
- OpusRepacketizer rp;
- unsigned char *dst;
- opus_int32 dst_len;
-
- if (len < 1)
- return OPUS_BAD_ARG;
- dst = data;
- dst_len = 0;
- /* Unpad all frames */
- for (s=0;s<nb_streams;s++)
- {
- opus_int32 ret;
- int self_delimited = s!=nb_streams-1;
- if (len<=0)
- return OPUS_INVALID_PACKET;
- opus_repacketizer_init(&rp);
- ret = opus_packet_parse_impl(data, len, self_delimited, &toc, NULL,
- size, NULL, &packet_offset);
- if (ret<0)
- return ret;
- ret = opus_repacketizer_cat_impl(&rp, data, packet_offset, self_delimited);
- if (ret < 0)
- return ret;
- ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, dst, len, self_delimited, 0);
- if (ret < 0)
- return ret;
- else
- dst_len += ret;
- dst += ret;
- data += packet_offset;
- len -= packet_offset;
- }
- return dst_len;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 03:21:21 +0000