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Code Issues 1 Projects Releases Wiki Activity

mpegtsdemux: Fix handling of explicit Opus channel mapping

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4180>
This commit is contained in:
Sebastian Dröge 2023-03-16 14:21:21 +02:00 committed by GStreamer Marge Bot
parent 9d2ac6e90b
commit 84e08a377b
1 changed files with 5 additions and 17 deletions
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22
subprojects/gst-plugins-bad/gst/mpegtsdemux/tsdemux.c
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@ -52,8 +52,6 @@
#include <math.h>
#define _gst_log2(x) (log(x)/log(2))
/*
* tsdemux
*
@ -1514,7 +1512,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
gst_byte_reader_init (&br, desc->data + 3, desc->length - 1);
channel_config_code = gst_byte_reader_get_uint8_unchecked (&br);
if ((channel_config_code & 0x8f) <= 8) {
if (channel_config_code < 0x89) {
static const guint8 coupled_stream_counts[9] = {
1, 0, 1, 1, 2, 2, 2, 3, 3
};
@ -1540,7 +1538,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
};
gint channels = -1, stream_count, coupled_count, mapping_family;
guint8 *channel_mapping = NULL;
guint8 channel_mapping[255] = { 0, };
channels = channel_config_code ? (channel_config_code & 0x0f) : 2;
if (channel_config_code == 0 || channel_config_code == 0x80) {
@ -1553,7 +1551,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
stream_count = 2;
coupled_count = 0;
}
channel_mapping = g_new0 (guint8, channels);
memcpy (channel_mapping, &channel_map_a[1], channels);
} else if (channel_config_code <= 8) {
mapping_family = (channels > 2) ? 1 : 0;
@ -1562,7 +1559,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
coupled_stream_counts[channel_config_code];
coupled_count = coupled_stream_counts[channel_config_code];
if (mapping_family != 0) {
channel_mapping = g_new0 (guint8, channels);
memcpy (channel_mapping, &channel_map_a[channels - 1],
channels);
}
@ -1571,7 +1567,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
mapping_family = 1;
stream_count = channels;
coupled_count = 0;
channel_mapping = g_new0 (guint8, channels);
memcpy (channel_mapping, &channel_map_b[channels - 1],
channels);
} else if (channel_config_code == 0x81) {
@ -1608,7 +1603,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
gst_byte_reader_get_data_unchecked
(&br, remaining_bytes), remaining_bytes);
stream_count_minus_one_len = ceil (_gst_log2 (channels));
stream_count_minus_one_len = g_bit_storage (channels);
if (!gst_bit_reader_get_bits_uint8 (&breader,
&stream_count_minus_one,
stream_count_minus_one_len)) {
@ -1619,8 +1614,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
}
stream_count = stream_count_minus_one + 1;
coupled_stream_count_len =
ceil (_gst_log2 (stream_count_minus_one + 2));
coupled_stream_count_len = g_bit_storage (stream_count + 1);
if (!gst_bit_reader_get_bits_uint8 (&breader,
&coupled_stream_count, coupled_stream_count_len)) {
@ -1633,9 +1627,7 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
coupled_count = coupled_stream_count;
channel_mapping_len =
ceil (_gst_log2 (stream_count_minus_one + 1 +
coupled_stream_count + 1));
channel_mapping = g_new0 (guint8, channels);
g_bit_storage (stream_count + coupled_stream_count + 1);
for (i = 0; i < channels; i++) {
if (!gst_bit_reader_get_bits_uint8 (&breader,
&channel_mapping[i], channel_mapping_len)) {
@ -1648,8 +1640,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
/* error above */
if (i != channels) {
channels = -1;
g_free (channel_mapping);
channel_mapping = NULL;
break;
}
}
@ -1663,8 +1653,6 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
gst_codec_utils_opus_create_caps (48000, channels,
mapping_family, stream_count, coupled_count,
channel_mapping);
g_free (channel_mapping);
}
} else {
GST_WARNING_OBJECT (demux,