gstreamer/gst/avi/audiocodecs.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*#define DEBUG_ENABLED */
#include <wine/winbase.h>
#include <wine/winerror.h>
#include <wine/driver.h>
#include <wine/msacm.h>
#define WIN32
#include <gstavidecoder.h>
typedef struct _GstWinLoaderAudioData GstWinLoaderAudioData;
struct _GstWinLoaderAudioData {
guchar ext_info[64];
WAVEFORMATEX wf;
HACMSTREAM srcstream;
GstPad *out;
};
static GstPad *gst_avi_decoder_get_audio_srcpad_MPEG(GstAviDecoder *avi_decoder, guint pad_nr, GstPadTemplate *temp);
static GstPad *gst_avi_decoder_get_audio_srcpad_winloader(GstAviDecoder *avi_decoder, guint pad_nr, gst_riff_strf_auds *strf, GstPadTemplate *temp);
static void gst_avi_decoder_winloader_audio_chain(GstPad *pad, GstBuffer *buf);
GstPad *gst_avi_decoder_get_audio_srcpad(GstAviDecoder *avi_decoder, guint pad_nr, gst_riff_strf_auds *strf, GstPadTemplate *temp)
{
GstPad *newpad;
switch (strf->format) {
case GST_RIFF_WAVE_FORMAT_PCM:
newpad = gst_pad_new("audio_00", GST_PAD_SRC);
gst_pad_try_set_caps (newpad,
GST_CAPS_NEW (
"avidecoder_caps",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT ((gint)strf->size),
"depth", GST_PROPS_INT ((gint)strf->size),
"rate", GST_PROPS_INT ((gint)strf->rate),
"channels", GST_PROPS_INT ((gint)strf->channels)
));
avi_decoder->audio_pad[pad_nr] = newpad;
return newpad;
case GST_RIFF_WAVE_FORMAT_MPEGL12:
case GST_RIFF_WAVE_FORMAT_MPEGL3:
return gst_avi_decoder_get_audio_srcpad_MPEG(avi_decoder, pad_nr, temp);
default:
newpad = gst_avi_decoder_get_audio_srcpad_winloader(avi_decoder, pad_nr, strf, temp);
if (newpad) return newpad;
printf("audio format %04x not supported\n", strf->format);
break;
}
return NULL;
}
static GstPad *gst_avi_decoder_get_audio_srcpad_MPEG(GstAviDecoder *avi_decoder, guint pad_nr, GstPadTemplate *temp)
{
GstElement *parse_audio, *decode;
GstPad *srcpad, *sinkpad, *newpad;
parse_audio = gst_element_factory_make("mp3parse", "parse_audio");
g_return_val_if_fail(parse_audio != NULL, NULL);
decode = gst_element_factory_make("mpg123", "decode_audio");
g_return_val_if_fail(decode != NULL, NULL);
gst_element_set_state(GST_ELEMENT(gst_object_get_parent(GST_OBJECT(avi_decoder))), GST_STATE_PAUSED);
gst_bin_add(GST_BIN(gst_object_get_parent(GST_OBJECT(avi_decoder))), parse_audio);
gst_bin_add(GST_BIN(gst_object_get_parent(GST_OBJECT(avi_decoder))), decode);
newpad = gst_pad_new("video", GST_PAD_SRC);
gst_pad_set_parent(newpad, GST_OBJECT(avi_decoder));
sinkpad = gst_element_get_pad(parse_audio,"sink");
gst_pad_connect(gst_element_get_pad(parse_audio,"src"),
gst_element_get_pad(decode,"sink"));
gst_pad_set_chain_function (gst_element_get_pad(parse_audio,"src"),
GST_RPAD_CHAINFUNC (gst_element_get_pad(decode,"sink")));
srcpad = gst_element_get_pad(decode,"src");
gst_pad_connect(newpad, sinkpad);
gst_pad_set_name(srcpad, "audio_00");
gst_pad_set_chain_function (newpad, GST_RPAD_CHAINFUNC (sinkpad));
avi_decoder->audio_pad[pad_nr] = newpad;
gst_element_set_state(GST_ELEMENT(gst_object_get_parent(GST_OBJECT(avi_decoder))), GST_STATE_PLAYING);
return srcpad;
}
static GstPad *gst_avi_decoder_get_audio_srcpad_winloader(GstAviDecoder *avi_decoder, guint pad_nr, gst_riff_strf_auds *strf, GstPadTemplate *temp)
{
HRESULT h;
GstWinLoaderAudioData *data;
GstPad *sinkpad, *newpad;
if (!gst_library_load("winloader")) {
gst_info("audiocodecs: could not load support library: 'winloader'\n");
return NULL;
}
gst_info("audiocodecs: winloader loaded\n");
avi_decoder->extra_data = g_malloc0(sizeof(GstWinLoaderAudioData));
data = (GstWinLoaderAudioData *)avi_decoder->extra_data;
memcpy(data->ext_info, strf, sizeof(WAVEFORMATEX));
memset(data->ext_info+18, 0, 32);
if (strf->rate == 0)
return NULL;
data->wf.nChannels=strf->channels;
data->wf.nSamplesPerSec=strf->rate;
data->wf.nAvgBytesPerSec=2*data->wf.nSamplesPerSec*data->wf.nChannels;
data->wf.wFormatTag=strf->format;
data->wf.nBlockAlign=strf->blockalign;
data->wf.wBitsPerSample=strf->av_bps;
data->wf.cbSize=0;
gst_info("audiocodecs: trying to open library %p\n", data);
h = acmStreamOpen(
&data->srcstream,
(HACMDRIVER)NULL,
(WAVEFORMATEX*)data->ext_info,
(WAVEFORMATEX*)&data->wf,
NULL,
0,
0,
0);
if(h != S_OK)
{
if(h == ACMERR_NOTPOSSIBLE) {
printf("audiocodecs:: Unappropriate audio format\n");
}
printf("audiocodecs:: acmStreamOpen error\n");
return NULL;
}
newpad = gst_pad_new("audio", GST_PAD_SINK);
gst_pad_set_parent(newpad, GST_OBJECT(avi_decoder));
gst_pad_set_chain_function(newpad, gst_avi_decoder_winloader_audio_chain);
sinkpad = gst_pad_new("audio_00", GST_PAD_SRC);
gst_pad_set_parent(sinkpad, GST_OBJECT(avi_decoder));
gst_pad_connect(newpad, sinkpad);
gst_pad_set_chain_function (newpad, GST_RPAD_CHAINFUNC (sinkpad));
/*gst_pad_connect(newpad, sinkpad); */
avi_decoder->audio_pad[pad_nr] = newpad;
data->out = sinkpad;
GST_DEBUG (0,"gst_avi_decoder: pads created");
return sinkpad;
}
static void gst_avi_decoder_winloader_audio_chain(GstPad *pad, GstBuffer *buf)
{
GST_DEBUG (0,"gst_avi_decoder: got buffer %08lx %p", *(gulong *)GST_BUFFER_DATA(buf), GST_BUFFER_DATA(buf));
gst_buffer_unref(buf);
}