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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-20 23:10:40 +00:00
fdkaacdec: Support arbitrary channel configs
Try to match the config to GStreamer positions. If something doesn't fit, fall back to a set of unpositioned channels. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1561>
This commit is contained in:
Jan Alexander Steffens (heftig)
GStreamer Marge Bot
parent
d4b4ffc944
commit
e10bd02e1d
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@ -179,15 +179,305 @@ gst_fdkaacdec_set_format (GstAudioDecoder * dec, GstCaps * caps)
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return FALSE;
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}
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/* 8 channels * 2 bytes per sample * 2048 samples */
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/* 64 channels * 2048 samples * 2 bytes per sample */
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if (!self->decode_buffer) {
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self->decode_buffer_size = 8 * 2048;
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self->decode_buffer_size = 64 * 2048;
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self->decode_buffer = g_new (gint16, self->decode_buffer_size);
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}
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return TRUE;
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}
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static gboolean
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gst_fdkaacdec_map_channels (GstFdkAacDec * self, const CStreamInfo * in,
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gboolean * updated)
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{
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GstAudioChannelPosition *positions = self->positions;
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AUDIO_CHANNEL_TYPE *channel_types = in->pChannelType;
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UCHAR *channel_indices = in->pChannelIndices;
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INT i, channels = in->numChannels;
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guint64 mask_mapped = 0;
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#define DEF_CHANSET(name, max) \
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GstAudioChannelPosition *set_ ## name[max] = {NULL}; \
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guint n_ ## name = 0, mapped_ ## name = 0
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#define PUSH_CHAN(name, index, pos_index) G_STMT_START { \
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if ((index) >= G_N_ELEMENTS (set_ ## name)) { \
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GST_WARNING_OBJECT (self, "Too many %s channels (%d)", \
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#name, (gint) (index)); \
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goto error; \
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} else if (set_ ## name[index] != NULL) { \
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GST_WARNING_OBJECT (self, "Channel %s[%d] already mapped", \
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#name, (gint) (index)); \
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goto error; \
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} else { \
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GST_DEBUG_OBJECT (self, "Mapping channel %s[%d] to %d", \
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#name, (gint) (index), (gint) pos_index); \
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set_ ## name[index] = &positions[pos_index]; \
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n_ ## name = MAX (n_ ## name, (index) + 1); \
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} \
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} G_STMT_END
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#define SHIFT_CHAN(name, pos) G_STMT_START { \
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if (mask_mapped & GST_AUDIO_CHANNEL_POSITION_MASK (pos)) { \
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GST_WARNING_OBJECT (self, "Position %s already mapped", #pos); \
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goto error; \
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} else if (set_ ## name[mapped_ ## name] == NULL) { \
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GST_WARNING_OBJECT (self, "Channel %s[%u] is a hole", \
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#name, mapped_ ## name); \
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goto error; \
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} else { \
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GST_DEBUG_OBJECT (self, "Mapping channel %s[%u] to %s", \
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#name, mapped_ ## name, #pos); \
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*set_ ## name[mapped_ ## name ++] = GST_AUDIO_CHANNEL_POSITION_ ## pos; \
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mask_mapped |= GST_AUDIO_CHANNEL_POSITION_MASK (pos); \
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} \
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} G_STMT_END
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DEF_CHANSET (front, 7);
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DEF_CHANSET (side, 2);
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DEF_CHANSET (rear, 3);
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DEF_CHANSET (lfe, 2);
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DEF_CHANSET (top_front, 3);
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DEF_CHANSET (top_center, 3);
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DEF_CHANSET (top_rear, 3);
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DEF_CHANSET (bottom_front, 3);
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if (self->channels == channels &&
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memcmp (self->channel_types, channel_types,
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channels * sizeof *channel_types) == 0 &&
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memcmp (self->channel_indices, channel_indices,
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channels * sizeof *channel_indices) == 0) {
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GST_TRACE_OBJECT (self, "Reusing cached positions for %d channels",
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channels);
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return TRUE;
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}
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self->channels = channels;
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memcpy (self->channel_types, channel_types, channels * sizeof *channel_types);
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memcpy (self->channel_indices, channel_indices,
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channels * sizeof *channel_indices);
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*updated = TRUE;
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for (i = 0; i < channels; i++) {
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guint8 type = in->pChannelType[i];
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guint8 index = in->pChannelIndices[i];
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switch (type) {
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case ACT_FRONT:
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PUSH_CHAN (front, index, i);
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break;
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case ACT_SIDE:
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PUSH_CHAN (side, index, i);
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break;
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case ACT_BACK:
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PUSH_CHAN (rear, index, i);
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break;
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case ACT_LFE:
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PUSH_CHAN (lfe, index, i);
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break;
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case ACT_FRONT_TOP:
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PUSH_CHAN (top_front, index, i);
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break;
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case ACT_SIDE_TOP:
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PUSH_CHAN (top_center, index, i);
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break;
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case ACT_BACK_TOP:
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PUSH_CHAN (top_rear, index, i);
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break;
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#ifdef HAVE_FDK_AAC_0_1_4
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case ACT_FRONT_BOTTOM:
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PUSH_CHAN (bottom_front, index, i);
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break;
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#endif
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case ACT_NONE:
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GST_INFO_OBJECT (self, "Channel %d is unpositioned", i);
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goto error;
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default:
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GST_ERROR_OBJECT (self, "Channel %d has unknown type %d", i, type);
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goto error;
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}
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}
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/* Outwards from the front center, following ISO/IEC 13818-7 8.5.2.2
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* "Explicit channel mapping using a program_config_element()" */
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switch (n_front) {
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case 7:
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SHIFT_CHAN (front, FRONT_CENTER);
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case 6:
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SHIFT_CHAN (front, FRONT_LEFT_OF_CENTER);
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SHIFT_CHAN (front, FRONT_RIGHT_OF_CENTER);
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SHIFT_CHAN (front, FRONT_LEFT);
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SHIFT_CHAN (front, FRONT_RIGHT);
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SHIFT_CHAN (front, WIDE_LEFT);
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SHIFT_CHAN (front, WIDE_RIGHT);
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break;
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case 5:
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SHIFT_CHAN (front, FRONT_CENTER);
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case 4:
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SHIFT_CHAN (front, FRONT_LEFT_OF_CENTER);
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SHIFT_CHAN (front, FRONT_RIGHT_OF_CENTER);
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SHIFT_CHAN (front, WIDE_LEFT);
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SHIFT_CHAN (front, WIDE_RIGHT);
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break;
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case 3:
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SHIFT_CHAN (front, FRONT_CENTER);
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case 2:
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SHIFT_CHAN (front, FRONT_LEFT);
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SHIFT_CHAN (front, FRONT_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (front, FRONT_CENTER);
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break;
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}
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/* Front to rear */
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switch (n_side) {
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case 2:
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SHIFT_CHAN (side, SIDE_LEFT);
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SHIFT_CHAN (side, SIDE_RIGHT);
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break;
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case 1:
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GST_ERROR_OBJECT (self, "Single side channel not supported");
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goto error;
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}
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/* Inwards to the rear center */
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switch (n_rear) {
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case 5:
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SHIFT_CHAN (rear, SURROUND_LEFT);
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SHIFT_CHAN (rear, SURROUND_RIGHT);
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SHIFT_CHAN (rear, REAR_LEFT);
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SHIFT_CHAN (rear, REAR_RIGHT);
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SHIFT_CHAN (rear, REAR_CENTER);
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break;
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case 4:
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SHIFT_CHAN (rear, SURROUND_LEFT);
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SHIFT_CHAN (rear, SURROUND_RIGHT);
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SHIFT_CHAN (rear, REAR_LEFT);
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SHIFT_CHAN (rear, REAR_RIGHT);
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break;
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case 3:
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SHIFT_CHAN (rear, SURROUND_LEFT);
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SHIFT_CHAN (rear, SURROUND_RIGHT);
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SHIFT_CHAN (rear, REAR_CENTER);
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break;
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case 2:
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SHIFT_CHAN (rear, SURROUND_LEFT);
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SHIFT_CHAN (rear, SURROUND_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (rear, REAR_CENTER);
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break;
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}
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switch (n_lfe) {
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case 2:
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SHIFT_CHAN (lfe, LFE1);
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SHIFT_CHAN (lfe, LFE2);
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break;
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case 1:
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SHIFT_CHAN (lfe, LFE1);
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break;
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}
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switch (n_top_front) {
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case 3:
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SHIFT_CHAN (top_front, TOP_FRONT_CENTER);
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case 2:
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SHIFT_CHAN (top_front, TOP_FRONT_LEFT);
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SHIFT_CHAN (top_front, TOP_FRONT_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (top_front, TOP_FRONT_CENTER);
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break;
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}
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switch (n_top_center) {
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case 3:
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SHIFT_CHAN (top_center, TOP_CENTER);
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case 2:
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SHIFT_CHAN (top_center, TOP_SIDE_LEFT);
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SHIFT_CHAN (top_center, TOP_SIDE_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (top_center, TOP_CENTER);
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break;
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}
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switch (n_top_rear) {
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case 3:
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SHIFT_CHAN (top_rear, TOP_REAR_LEFT);
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SHIFT_CHAN (top_rear, TOP_REAR_RIGHT);
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SHIFT_CHAN (top_rear, TOP_REAR_CENTER);
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break;
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case 2:
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SHIFT_CHAN (top_rear, TOP_REAR_LEFT);
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SHIFT_CHAN (top_rear, TOP_REAR_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (top_rear, TOP_REAR_CENTER);
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break;
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}
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switch (n_bottom_front) {
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case 3:
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SHIFT_CHAN (bottom_front, BOTTOM_FRONT_CENTER);
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case 2:
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SHIFT_CHAN (bottom_front, BOTTOM_FRONT_LEFT);
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SHIFT_CHAN (bottom_front, BOTTOM_FRONT_RIGHT);
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break;
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case 1:
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SHIFT_CHAN (bottom_front, BOTTOM_FRONT_CENTER);
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break;
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}
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if (mask_mapped != 0) {
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GST_INFO_OBJECT (self, "Mapped %d front, %d side, %d rear, %d lfe,"
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" %d top front, %d top center, %d top rear, %d bottom front channels",
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mapped_front, mapped_side, mapped_rear, mapped_lfe, mapped_top_front,
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mapped_top_center, mapped_top_rear, mapped_bottom_front);
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return TRUE;
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}
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if (channels == 1) {
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GST_INFO_OBJECT (self, "Mapped a mono channel");
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positions[0] = GST_AUDIO_CHANNEL_POSITION_MONO;
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return TRUE;
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}
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error:
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if (channels > 0) {
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GST_WARNING_OBJECT (self, "Mapped %d channels, without positions",
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channels);
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for (i = 0; i < channels; i++)
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positions[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
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return TRUE;
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}
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GST_ERROR_OBJECT (self, "No channels to map");
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return FALSE;
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#undef DEF_CHANSET
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#undef PUSH_CHAN
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#undef SHIFT_CHAN
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}
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static gboolean
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gst_fdkaacdec_map_channel_config (GstFdkAacDec * self, const CStreamInfo * in,
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gboolean * updated)
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@ -196,6 +486,10 @@ gst_fdkaacdec_map_channel_config (GstFdkAacDec * self, const CStreamInfo * in,
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CHANNEL_MODE config = in->channelConfig;
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INT channels = in->numChannels;
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if (config == 0) {
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return gst_fdkaacdec_map_channels (self, in, updated);
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}
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if (self->config == config && self->channels == channels) {
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GST_TRACE_OBJECT (self,
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"Reusing cached positions for channelConfig %d (%d channels)",
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@ -213,9 +507,9 @@ gst_fdkaacdec_map_channel_config (GstFdkAacDec * self, const CStreamInfo * in,
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}
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if (!layout->channels) {
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GST_ERROR_OBJECT (self, "Unknown channelConfig %d (%d channels)",
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GST_WARNING_OBJECT (self, "Unknown channelConfig %d (%d channels)",
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config, channels);
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return FALSE;
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return gst_fdkaacdec_map_channels (self, in, updated);
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}
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GST_INFO_OBJECT (self, "Known channelConfig %d (%d channels)",
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@ -229,7 +523,7 @@ gst_fdkaacdec_map_channel_config (GstFdkAacDec * self, const CStreamInfo * in,
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static gboolean
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gst_fdkaacdec_update_info (GstFdkAacDec * self)
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{
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GstAudioChannelPosition positions[8];
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GstAudioChannelPosition positions[64];
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GstAudioInfo *info = &self->info;
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gint channels = self->channels;
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@ -51,7 +51,9 @@ struct _GstFdkAacDec {
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INT sample_rate;
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CHANNEL_MODE config;
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INT channels;
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GstAudioChannelPosition positions[8];
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AUDIO_CHANNEL_TYPE channel_types[64];
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UCHAR channel_indices[64];
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GstAudioChannelPosition positions[64];
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gboolean need_reorder;
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GstAudioInfo info;
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