gstreamer/gst/rtp/gstrtpdvdepay.c

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/* Farsight
* Copyright (C) 2006 Marcel Moreaux <marcelm@spacelabs.nl>
* (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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.
*/
/*
* RTP DV depayloader.
*
* Important note for NTSC-users:
*
* Because the author uses PAL video, and he does not have proper DV
* documentation (the DV format specification is not freely available),
* this code may very well contain PAL-specific assumptions.
*/
#include <stdlib.h>
#include <string.h>
#include <gst/gst.h>
#include "gstrtpdvdepay.h"
GST_DEBUG_CATEGORY (rtpdvdepay_debug);
#define GST_CAT_DEFAULT (rtpdvdepay_debug)
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-dv")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"media = (string) { \"video\", \"audio\" },"
"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"encoding-name = (string) \"DV\", "
"clock-rate = (int) 90000,"
"encode = (string) { \"SD-VCR/525-60\", \"SD-VCR/625-50\", \"HD-VCR/1125-60\","
"\"HD-VCR/1250-50\", \"SDL-VCR/525-60\", \"SDL-VCR/625-50\","
"\"306M/525-60\", \"306M/625-50\", \"314M-25/525-60\","
"\"314M-25/625-50\", \"314M-50/525-60\", \"314M-50/625-50\" }"
/* optional parameters can't go in the template
* "audio = (string) { \"bundled\", \"none\" }"
*/
)
);
static GstStateChangeReturn
gst_rtp_dv_depay_change_state (GstElement * element, GstStateChange transition);
static GstBuffer *gst_rtp_dv_depay_process (GstBaseRTPDepayload * base,
GstBuffer * in);
static gboolean gst_rtp_dv_depay_setcaps (GstBaseRTPDepayload * depayload,
GstCaps * caps);
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#define gst_rtp_dv_depay_parent_class parent_class
G_DEFINE_TYPE (GstRTPDVDepay, gst_rtp_dv_depay, GST_TYPE_BASE_RTP_DEPAYLOAD);
static void
gst_rtp_dv_depay_class_init (GstRTPDVDepayClass * klass)
{
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseRTPDepayloadClass *gstbasertpdepayload_class =
(GstBaseRTPDepayloadClass *) klass;
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GST_DEBUG_CATEGORY_INIT (rtpdvdepay_debug, "rtpdvdepay", 0,
"DV RTP Depayloader");
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_change_state);
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gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details_simple (gstelement_class, "RTP DV Depayloader",
"Codec/Depayloader/Network/RTP",
"Depayloads DV from RTP packets (RFC 3189)",
"Marcel Moreaux <marcelm@spacelabs.nl>, Wim Taymans <wim.taymans@gmail.com>");
gstbasertpdepayload_class->process =
GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_process);
gstbasertpdepayload_class->set_caps =
GST_DEBUG_FUNCPTR (gst_rtp_dv_depay_setcaps);
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
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gst_rtp_dv_depay_init (GstRTPDVDepay * filter)
{
}
static gboolean
parse_encode (GstRTPDVDepay * rtpdvdepay, const gchar * encode)
{
rtpdvdepay->width = 720;
if (!strcmp (encode, "314M-25/525-60")) {
rtpdvdepay->frame_size = 240000;
rtpdvdepay->height = 480;
rtpdvdepay->rate_num = 30000;
rtpdvdepay->rate_denom = 1001;
} else if (!strcmp (encode, "SD-VCR/525-60")) {
rtpdvdepay->frame_size = 120000;
rtpdvdepay->height = 480;
rtpdvdepay->rate_num = 30000;
rtpdvdepay->rate_denom = 1001;
} else if (!strcmp (encode, "314M-50/625-50")) {
rtpdvdepay->frame_size = 288000;
rtpdvdepay->height = 576;
rtpdvdepay->rate_num = 25;
rtpdvdepay->rate_denom = 1;
} else if (!strcmp (encode, "SD-VCR/625-50")) {
rtpdvdepay->frame_size = 144000;
rtpdvdepay->height = 576;
rtpdvdepay->rate_num = 25;
rtpdvdepay->rate_denom = 1;
} else if (!strcmp (encode, "314M-25/625-50")) {
rtpdvdepay->frame_size = 144000;
rtpdvdepay->height = 576;
rtpdvdepay->rate_num = 25;
rtpdvdepay->rate_denom = 1;
} else
rtpdvdepay->frame_size = -1;
return rtpdvdepay->frame_size != -1;
}
static gboolean
gst_rtp_dv_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
{
GstStructure *structure;
GstRTPDVDepay *rtpdvdepay;
GstCaps *srccaps;
gst/rtp/gstrtpL16depay.c: Check if clock-rate and channels are valid. Original commit message from CVS: * gst/rtp/gstrtpL16depay.c: (gst_rtp_L16_depay_setcaps), (gst_rtp_L16_depay_process): Check if clock-rate and channels are valid. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpL16pay.c: (gst_rtp_L16_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpac3depay.c: (gst_rtp_ac3_depay_setcaps), (gst_rtp_ac3_depay_process): Don't ignore the return value of set_caps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpamrdepay.c: (gst_rtp_amr_depay_setcaps), (gst_rtp_amr_depay_process): * gst/rtp/gstrtpamrdepay.h: Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set output caps on the buffers, the base class does that for us. The subclass will make sure we are negotiated. * gst/rtp/gstrtpdvdepay.c: (gst_rtp_dv_depay_setcaps), (gst_rtp_dv_depay_process), (gst_rtp_dv_depay_reset): * gst/rtp/gstrtpdvdepay.h: Clean up caps negotiation. The subclass will make sure we are negotiated. * gst/rtp/gstrtpg726depay.c: (gst_rtp_g726_depay_setcaps), (gst_rtp_g726_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpg729depay.c: (gst_rtp_g729_depay_init), (gst_rtp_g729_depay_setcaps), (gst_rtp_g729_depay_process): * gst/rtp/gstrtpg729depay.h: The subclass will make sure we are negotiated. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpgsmdepay.c: (gst_rtp_gsm_depay_setcaps), (gst_rtp_gsm_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpgsmpay.c: (gst_rtp_gsm_pay_setcaps): Clean up caps negotiation. Don't ignore the return value of set_outcaps. * gst/rtp/gstrtph263depay.c: (gst_rtp_h263_depay_setcaps), (gst_rtp_h263_depay_process): Clean up caps negotiation. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph263pay.c: (gst_rtp_h263_pay_setcaps), (gst_rtp_h263_pay_flush), (gst_rtp_h263_pay_handle_buffer): * gst/rtp/gstrtph263pay.h: Don't ignore the return value of set_outcaps. Do some more timestamps. * gst/rtp/gstrtph263pdepay.c: (gst_rtp_h263p_depay_setcaps), (gst_rtp_h263p_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph263ppay.c: (gst_rtp_h263p_pay_class_init), (gst_rtp_h263p_pay_setcaps), (gst_rtp_h263p_pay_flush), (gst_rtp_h263p_pay_handle_buffer): * gst/rtp/gstrtph263ppay.h: Don't ignore the return value of set_outcaps. Do some more timestamps. * gst/rtp/gstrtph264depay.c: (gst_rtp_h264_depay_setcaps), (gst_rtp_h264_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. Fix possible caps leak. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph264pay.c: (gst_rtp_h264_pay_setcaps): Add some more debug info. * gst/rtp/gstrtpilbcdepay.c: (gst_rtp_ilbc_depay_setcaps), (gst_rtp_ilbc_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpilbcpay.c: (gst_rtpilbcpay_sink_setcaps): Clean up caps negotiation. * gst/rtp/gstrtpmp1sdepay.c: (gst_rtp_mp1s_depay_setcaps), (gst_rtp_mp1s_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp2tdepay.c: (gst_rtp_mp2t_depay_setcaps), (gst_rtp_mp2t_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4adepay.c: (gst_rtp_mp4a_depay_setcaps), (gst_rtp_mp4a_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpmp4apay.c: (gst_rtp_mp4a_pay_new_caps), (gst_rtp_mp4a_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmp4gdepay.c: (gst_rtp_mp4g_depay_setcaps), (gst_rtp_mp4g_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4gpay.c: (gst_rtp_mp4g_pay_finalize), (gst_rtp_mp4g_pay_new_caps), (gst_rtp_mp4g_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmp4vdepay.c: (gst_rtp_mp4v_depay_setcaps), (gst_rtp_mp4v_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4vpay.c: (gst_rtp_mp4v_pay_new_caps), (gst_rtp_mp4v_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmpadepay.c: (gst_rtp_mpa_depay_setcaps), (gst_rtp_mpa_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpmpapay.c: (gst_rtp_mpa_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmpvdepay.c: (gst_rtp_mpv_depay_setcaps), (gst_rtp_mpv_depay_process): Clean up caps negotiation. Actually set output caps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpmpvpay.c: (gst_rtp_mpv_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtppcmadepay.c: (gst_rtp_pcma_depay_setcaps), (gst_rtp_pcma_depay_process): Clean up caps negotiation. Set output buffer duration because we can. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtppcmapay.c: (gst_rtp_pcma_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtppcmudepay.c: (gst_rtp_pcmu_depay_setcaps), (gst_rtp_pcmu_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtppcmupay.c: (gst_rtp_pcmu_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpspeexdepay.c: (gst_rtp_speex_depay_init), (gst_rtp_speex_depay_setcaps), (gst_rtp_speex_depay_process): Clean up caps negotiation. Set output caps on the pad and header buffers. Set duration on output buffers because we can. * gst/rtp/gstrtpspeexpay.c: (gst_rtp_speex_pay_parse_ident): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpsv3vdepay.c: (gst_rtp_sv3v_depay_setcaps), (gst_rtp_sv3v_depay_process): Clean up caps negotiation. No need to validate the buffer, the base class does that for us. No need to set caps out output buffers, subclass does that. * gst/rtp/gstrtptheoradepay.c: (gst_rtp_theora_depay_setcaps), (gst_rtp_theora_depay_process): Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtptheorapay.c: (gst_rtp_theora_pay_class_init), (gst_rtp_theora_pay_flush_packet), (encode_base64), (gst_rtp_theora_pay_finish_headers), (gst_rtp_theora_pay_parse_id), (gst_rtp_theora_pay_handle_buffer): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpvorbisdepay.c: (gst_rtp_vorbis_depay_setcaps), (gst_rtp_vorbis_depay_process): Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpvorbispay.c: (gst_rtp_vorbis_pay_finish_headers): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpvrawdepay.c: (gst_rtp_vraw_depay_setcaps): Clean up caps negotiation, don't ignore setcaps return. * gst/rtp/gstrtpvrawpay.c: (gst_rtp_vraw_pay_setcaps): Don't ignore the return value of set_outcaps.
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gint clock_rate;
gboolean systemstream, ret;
const gchar *encode, *media;
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guint8 *data;
gsize size;
rtpdvdepay = GST_RTP_DV_DEPAY (depayload);
structure = gst_caps_get_structure (caps, 0);
gst/rtp/gstrtpL16depay.c: Check if clock-rate and channels are valid. Original commit message from CVS: * gst/rtp/gstrtpL16depay.c: (gst_rtp_L16_depay_setcaps), (gst_rtp_L16_depay_process): Check if clock-rate and channels are valid. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpL16pay.c: (gst_rtp_L16_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpac3depay.c: (gst_rtp_ac3_depay_setcaps), (gst_rtp_ac3_depay_process): Don't ignore the return value of set_caps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpamrdepay.c: (gst_rtp_amr_depay_setcaps), (gst_rtp_amr_depay_process): * gst/rtp/gstrtpamrdepay.h: Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set output caps on the buffers, the base class does that for us. The subclass will make sure we are negotiated. * gst/rtp/gstrtpdvdepay.c: (gst_rtp_dv_depay_setcaps), (gst_rtp_dv_depay_process), (gst_rtp_dv_depay_reset): * gst/rtp/gstrtpdvdepay.h: Clean up caps negotiation. The subclass will make sure we are negotiated. * gst/rtp/gstrtpg726depay.c: (gst_rtp_g726_depay_setcaps), (gst_rtp_g726_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpg729depay.c: (gst_rtp_g729_depay_init), (gst_rtp_g729_depay_setcaps), (gst_rtp_g729_depay_process): * gst/rtp/gstrtpg729depay.h: The subclass will make sure we are negotiated. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpgsmdepay.c: (gst_rtp_gsm_depay_setcaps), (gst_rtp_gsm_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpgsmpay.c: (gst_rtp_gsm_pay_setcaps): Clean up caps negotiation. Don't ignore the return value of set_outcaps. * gst/rtp/gstrtph263depay.c: (gst_rtp_h263_depay_setcaps), (gst_rtp_h263_depay_process): Clean up caps negotiation. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph263pay.c: (gst_rtp_h263_pay_setcaps), (gst_rtp_h263_pay_flush), (gst_rtp_h263_pay_handle_buffer): * gst/rtp/gstrtph263pay.h: Don't ignore the return value of set_outcaps. Do some more timestamps. * gst/rtp/gstrtph263pdepay.c: (gst_rtp_h263p_depay_setcaps), (gst_rtp_h263p_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph263ppay.c: (gst_rtp_h263p_pay_class_init), (gst_rtp_h263p_pay_setcaps), (gst_rtp_h263p_pay_flush), (gst_rtp_h263p_pay_handle_buffer): * gst/rtp/gstrtph263ppay.h: Don't ignore the return value of set_outcaps. Do some more timestamps. * gst/rtp/gstrtph264depay.c: (gst_rtp_h264_depay_setcaps), (gst_rtp_h264_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. Fix possible caps leak. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtph264pay.c: (gst_rtp_h264_pay_setcaps): Add some more debug info. * gst/rtp/gstrtpilbcdepay.c: (gst_rtp_ilbc_depay_setcaps), (gst_rtp_ilbc_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpilbcpay.c: (gst_rtpilbcpay_sink_setcaps): Clean up caps negotiation. * gst/rtp/gstrtpmp1sdepay.c: (gst_rtp_mp1s_depay_setcaps), (gst_rtp_mp1s_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp2tdepay.c: (gst_rtp_mp2t_depay_setcaps), (gst_rtp_mp2t_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4adepay.c: (gst_rtp_mp4a_depay_setcaps), (gst_rtp_mp4a_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpmp4apay.c: (gst_rtp_mp4a_pay_new_caps), (gst_rtp_mp4a_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmp4gdepay.c: (gst_rtp_mp4g_depay_setcaps), (gst_rtp_mp4g_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4gpay.c: (gst_rtp_mp4g_pay_finalize), (gst_rtp_mp4g_pay_new_caps), (gst_rtp_mp4g_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmp4vdepay.c: (gst_rtp_mp4v_depay_setcaps), (gst_rtp_mp4v_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. No need to set caps on buffers, subclass does that for us. * gst/rtp/gstrtpmp4vpay.c: (gst_rtp_mp4v_pay_new_caps), (gst_rtp_mp4v_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmpadepay.c: (gst_rtp_mpa_depay_setcaps), (gst_rtp_mpa_depay_process): Clean up caps negotiation. Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtpmpapay.c: (gst_rtp_mpa_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpmpvdepay.c: (gst_rtp_mpv_depay_setcaps), (gst_rtp_mpv_depay_process): Clean up caps negotiation. Actually set output caps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpmpvpay.c: (gst_rtp_mpv_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtppcmadepay.c: (gst_rtp_pcma_depay_setcaps), (gst_rtp_pcma_depay_process): Clean up caps negotiation. Set output buffer duration because we can. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtppcmapay.c: (gst_rtp_pcma_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtppcmudepay.c: (gst_rtp_pcmu_depay_setcaps), (gst_rtp_pcmu_depay_process): Clean up caps negotiation. Use the marker bit to set the DISCONT flag on outgoing buffers. * gst/rtp/gstrtppcmupay.c: (gst_rtp_pcmu_pay_setcaps): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpspeexdepay.c: (gst_rtp_speex_depay_init), (gst_rtp_speex_depay_setcaps), (gst_rtp_speex_depay_process): Clean up caps negotiation. Set output caps on the pad and header buffers. Set duration on output buffers because we can. * gst/rtp/gstrtpspeexpay.c: (gst_rtp_speex_pay_parse_ident): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpsv3vdepay.c: (gst_rtp_sv3v_depay_setcaps), (gst_rtp_sv3v_depay_process): Clean up caps negotiation. No need to validate the buffer, the base class does that for us. No need to set caps out output buffers, subclass does that. * gst/rtp/gstrtptheoradepay.c: (gst_rtp_theora_depay_setcaps), (gst_rtp_theora_depay_process): Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtptheorapay.c: (gst_rtp_theora_pay_class_init), (gst_rtp_theora_pay_flush_packet), (encode_base64), (gst_rtp_theora_pay_finish_headers), (gst_rtp_theora_pay_parse_id), (gst_rtp_theora_pay_handle_buffer): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpvorbisdepay.c: (gst_rtp_vorbis_depay_setcaps), (gst_rtp_vorbis_depay_process): Don't ignore the return value of setcaps. No need to validate the buffer, the base class does that for us. * gst/rtp/gstrtpvorbispay.c: (gst_rtp_vorbis_pay_finish_headers): Don't ignore the return value of set_outcaps. * gst/rtp/gstrtpvrawdepay.c: (gst_rtp_vraw_depay_setcaps): Clean up caps negotiation, don't ignore setcaps return. * gst/rtp/gstrtpvrawpay.c: (gst_rtp_vraw_pay_setcaps): Don't ignore the return value of set_outcaps.
2008-10-27 11:03:53 +00:00
if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
clock_rate = 90000; /* default */
depayload->clock_rate = clock_rate;
/* we really need the encode property to figure out the frame size, it's also
* required by the spec */
if (!(encode = gst_structure_get_string (structure, "encode")))
goto no_encode;
/* figure out the size of one frame */
if (!parse_encode (rtpdvdepay, encode))
goto unknown_encode;
/* check the media, this tells us that the stream has video or not */
if (!(media = gst_structure_get_string (structure, "media")))
goto no_media;
systemstream = FALSE;
if (!strcmp (media, "audio")) {
/* we need a demuxer for audio only */
systemstream = TRUE;
} else if (!strcmp (media, "video")) {
const gchar *audio;
/* check the optional audio field, if it's present and set to bundled, we
* are dealing with a system stream. */
if ((audio = gst_structure_get_string (structure, "audio"))) {
if (!strcmp (audio, "bundled"))
systemstream = TRUE;
}
}
/* allocate accumulator */
rtpdvdepay->acc = gst_buffer_new_and_alloc (rtpdvdepay->frame_size);
/* Initialize the new accumulator frame.
* If the previous frame exists, copy that into the accumulator frame.
* This way, missing packets in the stream won't show up badly. */
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data = gst_buffer_map (rtpdvdepay->acc, &size, NULL, GST_MAP_WRITE);
memset (data, 0, rtpdvdepay->frame_size);
gst_buffer_unmap (rtpdvdepay->acc, data, size);
srccaps = gst_caps_new_simple ("video/x-dv",
"systemstream", G_TYPE_BOOLEAN, systemstream,
"width", G_TYPE_INT, rtpdvdepay->width,
"height", G_TYPE_INT, rtpdvdepay->height,
"framerate", GST_TYPE_FRACTION, rtpdvdepay->rate_num,
rtpdvdepay->rate_denom, NULL);
ret = gst_pad_set_caps (depayload->srcpad, srccaps);
gst_caps_unref (srccaps);
return ret;
/* ERRORS */
no_encode:
{
GST_ERROR_OBJECT (rtpdvdepay, "required encode property not found in caps");
return FALSE;
}
unknown_encode:
{
GST_ERROR_OBJECT (rtpdvdepay, "unknown encode property %s found", encode);
return FALSE;
}
no_media:
{
GST_ERROR_OBJECT (rtpdvdepay, "required media property not found in caps");
return FALSE;
}
}
/* A DV frame consists of a bunch of 80-byte DIF blocks.
* Each DIF block contains a 3-byte header telling where in the DV frame the
* DIF block should go. We use this information to calculate its position.
*/
static guint
calculate_difblock_location (guint8 * block)
{
gint block_type, dif_sequence, dif_block;
guint location;
block_type = block[0] >> 5;
dif_sequence = block[1] >> 4;
dif_block = block[2];
location = dif_sequence * 150;
switch (block_type) {
case 0: /* Header block, no offset */
break;
case 1: /* Subcode block */
location += (1 + dif_block);
break;
case 2: /* VAUX block */
location += (3 + dif_block);
break;
case 3: /* Audio block */
location += (6 + dif_block * 16);
break;
case 4: /* Video block */
location += (7 + (dif_block / 15) + dif_block);
break;
default: /* Something bogus */
GST_DEBUG ("UNKNOWN BLOCK");
location = -1;
break;
}
return location;
}
/* Process one RTP packet. Accumulate RTP payload in the proper place in a DV
* frame, and return that frame if we detect a new frame, or NULL otherwise.
* We assume a DV frame is 144000 bytes. That should accomodate PAL as well as
* NTSC.
*/
static GstBuffer *
gst_rtp_dv_depay_process (GstBaseRTPDepayload * base, GstBuffer * in)
{
GstBuffer *out = NULL;
guint8 *payload;
guint32 rtp_ts;
guint payload_len, location;
GstRTPDVDepay *dvdepay = GST_RTP_DV_DEPAY (base);
gboolean marker;
2011-04-07 17:04:33 +00:00
GstRTPBuffer rtp = { NULL, };
2011-04-07 17:04:33 +00:00
gst_rtp_buffer_map (in, GST_MAP_READ, &rtp);
marker = gst_rtp_buffer_get_marker (&rtp);
/* Check if the received packet contains (the start of) a new frame, we do
* this by checking the RTP timestamp. */
2011-04-07 17:04:33 +00:00
rtp_ts = gst_rtp_buffer_get_timestamp (&rtp);
/* we cannot copy the packet yet if the marker is set, we will do that below
* after taking out the data */
if (dvdepay->prev_ts != -1 && rtp_ts != dvdepay->prev_ts && !marker) {
/* the timestamp changed */
GST_DEBUG_OBJECT (dvdepay, "new frame with ts %u, old ts %u", rtp_ts,
dvdepay->prev_ts);
/* return copy of accumulator. */
out = gst_buffer_copy (dvdepay->acc);
}
/* Extract the payload */
2011-04-07 17:04:33 +00:00
payload_len = gst_rtp_buffer_get_payload_len (&rtp);
payload = gst_rtp_buffer_get_payload (&rtp);
/* copy all DIF chunks in their place. */
while (payload_len >= 80) {
guint offset;
/* Calculate where in the frame the payload should go */
location = calculate_difblock_location (payload);
if (location < 6) {
/* part of a header, set the flag to mark that we have the header. */
dvdepay->header_mask |= (1 << location);
GST_LOG_OBJECT (dvdepay, "got header at location %d, now %02x", location,
dvdepay->header_mask);
} else {
GST_LOG_OBJECT (dvdepay, "got block at location %d", location);
}
/* get the byte offset of the dif block */
offset = location * 80;
/* And copy it in, provided the location is sane. */
if (offset >= 0 && offset <= dvdepay->frame_size - 80)
2011-04-07 17:04:33 +00:00
gst_buffer_fill (dvdepay->acc, offset, payload, 80);
payload += 80;
payload_len -= 80;
}
2011-04-07 17:04:33 +00:00
gst_rtp_buffer_unmap (&rtp);
if (marker) {
GST_DEBUG_OBJECT (dvdepay, "marker bit complete frame %u", rtp_ts);
/* only copy the frame when we have a complete header */
if (dvdepay->header_mask == 0x3f) {
/* The marker marks the end of a frame that we need to push. The next frame
* will change the timestamp but we won't copy the accumulator again because
* we set the prev_ts to -1. */
out = gst_buffer_copy (dvdepay->acc);
} else {
GST_WARNING_OBJECT (dvdepay, "waiting for frame headers %02x",
dvdepay->header_mask);
}
dvdepay->prev_ts = -1;
} else {
/* save last timestamp */
dvdepay->prev_ts = rtp_ts;
}
return out;
}
static void
gst_rtp_dv_depay_reset (GstRTPDVDepay * depay)
{
if (depay->acc)
gst_buffer_unref (depay->acc);
depay->acc = NULL;
depay->prev_ts = -1;
depay->header_mask = 0;
}
static GstStateChangeReturn
gst_rtp_dv_depay_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstRTPDVDepay *depay = GST_RTP_DV_DEPAY (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_rtp_dv_depay_reset (depay);
break;
default:
break;
}
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element, transition), GST_STATE_CHANGE_FAILURE);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_rtp_dv_depay_reset (depay);
break;
default:
break;
}
return ret;
}
gboolean
gst_rtp_dv_depay_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "rtpdvdepay",
GST_RANK_SECONDARY, GST_TYPE_RTP_DV_DEPAY);
}