mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 20:21:24 +00:00
Code Issues 1 Projects Releases Wiki Activity

dvdlpcmdec: Add multichannel channel maps, and send some tags

Browse source 
Add a multichannel map to the output caps, and send at least a CODEC and
BITRATE tag. I'm not too sure about the 5.1 and 7.1 channel maps. I have
no samples and can't find info about the channel ordering, but this is
better than nothing.
This commit is contained in:
Jan Schmidt 2009-05-27 00:16:30 +01:00
parent 59f5b5f4f1
commit 81b3c01d04
2 changed files with 126 additions and 47 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
gst/dvdlpcmdec/Makefile.am
View file

@ -2,8 +2,8 @@
plugin_LTLIBRARIES = libgstdvdlpcmdec.la
libgstdvdlpcmdec_la_SOURCES = gstdvdlpcmdec.c
libgstdvdlpcmdec_la_CFLAGS = $(GST_CFLAGS)
libgstdvdlpcmdec_la_LIBADD = $(GST_LIBS)
libgstdvdlpcmdec_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
libgstdvdlpcmdec_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstaudio-@GST_MAJORMINOR@ $(GST_LIBS)
libgstdvdlpcmdec_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstdvdlpcmdec_la_LIBTOOLFLAGS = --tag=disable-static

169
gst/dvdlpcmdec/gstdvdlpcmdec.c
View file

@ -26,6 +26,7 @@
#include <string.h>
#include "gstdvdlpcmdec.h"
#include <gst/audio/multichannel.h>
GST_DEBUG_CATEGORY_STATIC (dvdlpcm_debug);
#define GST_CAT_DEFAULT dvdlpcm_debug
@ -175,13 +176,111 @@ gst_dvdlpcmdec_init (GstDvdLpcmDec * dvdlpcmdec)
gst_dvdlpcm_reset (dvdlpcmdec);
}
static GstAudioChannelPosition *
get_audio_channel_positions (GstDvdLpcmDec * dvdlpcmdec)
{
gint n_channels = dvdlpcmdec->channels;
GstAudioChannelPosition *ret = g_new (GstAudioChannelPosition, n_channels);
/* FIXME: The channel layouts for 5.1 and 7.1 are just guesses, I can't
* find any samples or confirmation */
switch (n_channels) {
case 8:
ret[7] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
ret[6] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
/* Fall through */
case 6:
ret[5] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
ret[4] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
ret[3] = GST_AUDIO_CHANNEL_POSITION_LFE;
ret[2] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
/* Fall through */
case 2:
ret[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
ret[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
break;
case 4:
ret[3] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
ret[2] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
ret[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
ret[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
break;
case 1:
ret[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
break;
default:
g_free (ret);
ret = NULL;
break;
}
return ret;
}
static void
gst_dvdlpcmdec_send_tags (GstDvdLpcmDec * dvdlpcmdec)
{
GstTagList *taglist;
guint bitrate = dvdlpcmdec->channels * dvdlpcmdec->out_width *
dvdlpcmdec->rate;
taglist = gst_tag_list_new ();
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND,
GST_TAG_AUDIO_CODEC, "LPCM Audio", GST_TAG_BITRATE, bitrate, NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (dvdlpcmdec), dvdlpcmdec->srcpad,
taglist);
}
static gboolean
gst_dvdlpcmdec_set_outcaps (GstDvdLpcmDec * dvdlpcmdec)
{
gboolean res = TRUE;
GstCaps *src_caps;
GstAudioChannelPosition *pos;
/* Build caps to set on the src pad, which we know from the incoming caps */
src_caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dvdlpcmdec->rate,
"channels", G_TYPE_INT, dvdlpcmdec->channels,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"depth", G_TYPE_INT, dvdlpcmdec->out_width,
"width", G_TYPE_INT, dvdlpcmdec->out_width,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
pos = get_audio_channel_positions (dvdlpcmdec);
if (pos) {
gst_audio_set_channel_positions (gst_caps_get_structure (src_caps, 0), pos);
g_free (pos);
}
GST_DEBUG_OBJECT (dvdlpcmdec, "Set rate %d, channels %d, width %d (out %d)",
dvdlpcmdec->rate, dvdlpcmdec->channels, dvdlpcmdec->width,
dvdlpcmdec->out_width);
res = gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps);
if (res) {
GST_DEBUG_OBJECT (dvdlpcmdec, "Successfully set output caps: %"
GST_PTR_FORMAT, src_caps);
gst_dvdlpcmdec_send_tags (dvdlpcmdec);
} else {
GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set output caps: %"
GST_PTR_FORMAT, src_caps);
}
gst_caps_unref (src_caps);
return res;
}
static gboolean
gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
{
GstStructure *structure;
gboolean res = TRUE;
GstDvdLpcmDec *dvdlpcmdec;
GstCaps *src_caps;
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (pad != NULL, FALSE);
@ -190,7 +289,8 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
structure = gst_caps_get_structure (caps, 0);
/* If we have the DVD structured LPCM (including header) */
/* If we have the DVD structured LPCM (including header) then we wait
* for incoming data before creating the output pad caps */
if (gst_structure_has_name (structure, "audio/x-private1-lpcm")) {
gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain_dvd);
goto done;
@ -216,40 +316,18 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
else
dvdlpcmdec->out_width = dvdlpcmdec->width;
/* Build caps to set on the src pad, which we know from the incoming caps */
src_caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dvdlpcmdec->rate,
"channels", G_TYPE_INT, dvdlpcmdec->channels,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"depth", G_TYPE_INT, dvdlpcmdec->out_width,
"width", G_TYPE_INT, dvdlpcmdec->out_width,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
GST_DEBUG_OBJECT (dvdlpcmdec, "Set rate %d, channels %d, width %d (out %d)",
dvdlpcmdec->rate, dvdlpcmdec->channels, dvdlpcmdec->width,
dvdlpcmdec->out_width);
if (!gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps)) {
GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set caps!");
res = FALSE;
} else {
GST_DEBUG_OBJECT (dvdlpcmdec, "Successfully set caps: %" GST_PTR_FORMAT,
caps);
}
gst_caps_unref (src_caps);
res = gst_dvdlpcmdec_set_outcaps (dvdlpcmdec);
done:
gst_object_unref (dvdlpcmdec);
return res;
/* ERRORS */
caps_parse_error:
{
GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't get parameters; missing caps?");
res = FALSE;
goto done;
gst_object_unref (dvdlpcmdec);
return FALSE;
}
}
@ -382,27 +460,11 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstBuffer * buf)
/* see if we have a new header */
if (header != dvdlpcmdec->header) {
GstCaps *src_caps;
parse_header (dvdlpcmdec, header);
/* Build caps to set on the src pad from what we've just parsed */
src_caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dvdlpcmdec->rate,
"channels", G_TYPE_INT, dvdlpcmdec->channels,
"endianness", G_TYPE_INT, G_BIG_ENDIAN,
"depth", G_TYPE_INT, dvdlpcmdec->out_width,
"width", G_TYPE_INT, dvdlpcmdec->out_width,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
GST_DEBUG_OBJECT (dvdlpcmdec, "Set rate %d, channels %d, width %d",
dvdlpcmdec->rate, dvdlpcmdec->channels, dvdlpcmdec->width);
if (!gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps))
if (!gst_dvdlpcmdec_set_outcaps (dvdlpcmdec))
goto negotiation_failed;
gst_caps_unref (src_caps);
dvdlpcmdec->header = header;
}
@ -502,7 +564,8 @@ done:
/* ERRORS */
negotiation_failed:
{
GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set caps!");
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
("Failed to configure output format"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
@ -540,6 +603,8 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
/* We can just pass 16-bits straight through intact, once we set
* appropriate things on the buffer */
samples = size / dvdlpcmdec->channels / 2;
if (samples < 1)
goto drop;
buf = gst_buffer_make_metadata_writable (buf);
break;
}
@ -554,6 +619,9 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
GstBuffer *outbuf;
GstCaps *bufcaps = GST_PAD_CAPS (dvdlpcmdec->srcpad);
if (samples < 1)
goto drop;
ret = gst_pad_alloc_buffer_and_set_caps (dvdlpcmdec->srcpad, 0,
samples * 3, bufcaps, &outbuf);
@ -602,6 +670,9 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
samples = size / dvdlpcmdec->channels / 3;
if (samples < 1)
goto drop;
/* Ensure our output buffer is writable */
buf = gst_buffer_make_writable (buf);
@ -640,6 +711,14 @@ done:
return ret;
/* ERRORS */
drop:
{
GST_DEBUG_OBJECT (dvdlpcmdec, "Buffer of size %u is too small. Dropping",
GST_BUFFER_SIZE (buf));
gst_buffer_unref (buf);
ret = GST_FLOW_OK;
goto done;
}
not_negotiated:
{
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),