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faac: Only accept specific channel layouts as required by AAC

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Fixes bug #607105.
This commit is contained in:
Sebastian Dröge 2010-01-16 13:05:58 +01:00
parent be9ca4d5e1
commit 007b667366
1 changed files with 75 additions and 0 deletions
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75
ext/faac/gstfaac.c
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@ -48,6 +48,8 @@
#include <stdlib.h>
#include <string.h>
#include <gst/audio/multichannel.h>
#include "gstfaac.h"
#define SINK_CAPS \
@ -120,6 +122,7 @@ static void gst_faac_get_property (GObject * object,
static gboolean gst_faac_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_faac_configure_source_pad (GstFaac * faac);
static gboolean gst_faac_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_faac_sink_getcaps (GstPad * pad);
static GstFlowReturn gst_faac_push_buffers (GstFaac * faac, gboolean force);
static GstFlowReturn gst_faac_chain (GstPad * pad, GstBuffer * data);
static GstStateChangeReturn gst_faac_change_state (GstElement * element,
@ -296,6 +299,8 @@ gst_faac_init (GstFaac * faac)
GST_DEBUG_FUNCPTR (gst_faac_chain));
gst_pad_set_setcaps_function (faac->sinkpad,
GST_DEBUG_FUNCPTR (gst_faac_sink_setcaps));
gst_pad_set_getcaps_function (faac->sinkpad,
GST_DEBUG_FUNCPTR (gst_faac_sink_getcaps));
gst_pad_set_event_function (faac->sinkpad,
GST_DEBUG_FUNCPTR (gst_faac_sink_event));
gst_element_add_pad (GST_ELEMENT (faac), faac->sinkpad);
@ -347,6 +352,76 @@ gst_faac_close_encoder (GstFaac * faac)
faac->offset = 0;
}
static const GstAudioChannelPosition aac_channel_positions[][8] = {
{GST_AUDIO_CHANNEL_POSITION_FRONT_MONO},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER, GST_AUDIO_CHANNEL_POSITION_LFE,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT}
};
static GstCaps *
gst_faac_sink_getcaps (GstPad * pad)
{
static volatile gsize sinkcaps = 0;
if (g_once_init_enter (&sinkcaps)) {
GstCaps *tmp = gst_caps_new_empty ();
GstStructure *s, *t;
gint i, c;
s = gst_structure_new ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE,
"width", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16, "rate", GST_TYPE_INT_RANGE, 8000, 96000, NULL);
for (i = 1; i <= 6; i++) {
GValue chanpos = { 0 };
GValue pos = { 0 };
t = gst_structure_copy (s);
gst_structure_set (t, "channels", G_TYPE_INT, i, NULL);
g_value_init (&chanpos, GST_TYPE_ARRAY);
g_value_init (&pos, GST_TYPE_AUDIO_CHANNEL_POSITION);
for (c = 0; c < i; c++) {
g_value_set_enum (&pos, aac_channel_positions[i - 1][c]);
gst_value_array_append_value (&chanpos, &pos);
}
g_value_unset (&pos);
gst_structure_set_value (t, "channel-positions", &chanpos);
g_value_unset (&chanpos);
gst_caps_append_structure (tmp, t);
}
gst_structure_free (s);
GST_DEBUG_OBJECT (pad, "Generated sinkcaps: %" GST_PTR_FORMAT, tmp);
g_once_init_leave (&sinkcaps, (gsize) tmp);
}
return gst_caps_ref ((GstCaps *) sinkcaps);
}
static gboolean
gst_faac_sink_setcaps (GstPad * pad, GstCaps * caps)
{