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synced 2025-11-02 09:01:50 -05:00
Rework pay/depay elements
Rename the payloader and depayloader to pinospay/pinosdepay because they now store data in a pinos specific format. Subclass GstElement because they are not real transform elements. Rework/remove some buffer functions that are not used by some more performant ones.
This commit is contained in:
Wim Taymans
parent
eada50916a
commit
c2cf359076
13 changed files with 582 additions and 660 deletions
254
src/gst/gstpinospay.c
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254
src/gst/gstpinospay.c
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/* GStreamer
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* Copyright (C) 2014 William Manley <will@williammanley.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstpinospay
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*
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* The pinospay element converts regular GStreamer buffers into the format
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* expected by Pinos.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 -v videotestsrc ! video/x-raw,format=RGB,width=1920,height=1080 \
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* ! pinospay ! fdsink fd=1 \
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* | gst-launch-1.0 fdsrc fd=0 ! fddepay \
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* ! video/x-raw,format=RGB,width=1920,height=1080 ! autovideosink
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* ]|
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* Video frames are created in the first gst-launch-1.0 process and displayed
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* by the second with no copying.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/allocators/gstfdmemory.h>
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#include <gst/base/gstbasetransform.h>
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#include "gstpinospay.h"
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#include "gsttmpfileallocator.h"
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#include <gst/net/gstnetcontrolmessagemeta.h>
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#include <gio/gunixfdmessage.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <client/pinos.h>
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GST_DEBUG_CATEGORY_STATIC (gst_pinos_pay_debug_category);
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#define GST_CAT_DEFAULT gst_pinos_pay_debug_category
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/* prototypes */
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/* pad templates */
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static GstStaticPadTemplate gst_pinos_pay_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-pinos"));
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static GstStaticPadTemplate gst_pinos_pay_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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/* class initialization */
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G_DEFINE_TYPE_WITH_CODE (GstPinosPay, gst_pinos_pay, GST_TYPE_ELEMENT,
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GST_DEBUG_CATEGORY_INIT (gst_pinos_pay_debug_category, "pinospay", 0,
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"debug category for pinospay element"));
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/* propose allocation query parameters for input buffers */
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static gboolean
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gst_pinos_pay_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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GstPinosPay *pay = GST_PINOS_PAY (parent);
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gboolean res = FALSE;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_ALLOCATION:
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{
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GST_DEBUG_OBJECT (pay, "propose_allocation");
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gst_query_add_allocation_param (query, pay->allocator, NULL);
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res = TRUE;
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break;
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}
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default:
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res = gst_pad_query_default (pad, parent, query);
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break;
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}
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return res;
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}
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static gboolean
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gst_pinos_pay_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstPinosPay *pay = GST_PINOS_PAY (parent);
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gboolean res = FALSE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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caps = gst_caps_new_empty_simple ("application/x-pinos");
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res = gst_pad_push_event (pay->srcpad, gst_event_new_caps (caps));
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gst_caps_unref (caps);
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gst_event_unref (event);
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break;
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}
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default:
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res = gst_pad_event_default (pad, parent, event);
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break;
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}
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return res;
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}
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static GstMemory *
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gst_pinos_pay_get_fd_memory (GstPinosPay * tmpfilepay, GstBuffer * buffer)
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{
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GstMemory *mem = NULL;
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if (gst_buffer_n_memory (buffer) == 1
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&& gst_is_fd_memory (gst_buffer_peek_memory (buffer, 0)))
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mem = gst_buffer_get_memory (buffer, 0);
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else {
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GstMapInfo info;
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GstAllocationParams params = {0, 0, 0, 0, { NULL, }};
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gsize size = gst_buffer_get_size (buffer);
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GST_INFO_OBJECT (tmpfilepay, "Buffer cannot be payloaded without copying");
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mem = gst_allocator_alloc (tmpfilepay->allocator, size, ¶ms);
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if (!gst_memory_map (mem, &info, GST_MAP_WRITE))
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return NULL;
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gst_buffer_extract (buffer, 0, info.data, size);
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gst_memory_unmap (mem, &info);
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}
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return mem;
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}
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static GstFlowReturn
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gst_pinos_pay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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GstPinosPay *pay = GST_PINOS_PAY (parent);
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GstMemory *fdmem = NULL;
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GError *err = NULL;
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GstBuffer *outbuf;
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PinosBuffer pbuf;
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PinosBufferBuilder builder;
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PinosBufferHeader hdr;
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PinosPacketFDPayload p;
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gsize size;
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gpointer data;
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GSocketControlMessage *msg;
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hdr.flags = 0;
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hdr.seq = GST_BUFFER_OFFSET (buffer);
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hdr.pts = GST_BUFFER_PTS (buffer) + GST_ELEMENT_CAST (pay)->base_time;
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hdr.dts_offset = 0;
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pinos_buffer_builder_init (&builder);
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pinos_buffer_builder_set_header (&builder, &hdr);
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fdmem = gst_pinos_pay_get_fd_memory (pay, buffer);
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p.fd_index = pinos_buffer_builder_add_fd (&builder, gst_fd_memory_get_fd (fdmem), &err);
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if (p.fd_index == -1)
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goto add_fd_failed;
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p.id = 0;
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p.offset = fdmem->offset;
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p.size = fdmem->size;
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pinos_buffer_builder_add_fd_payload (&builder, &p);
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pinos_buffer_builder_end (&builder, &pbuf);
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gst_memory_unref(fdmem);
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fdmem = NULL;
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data = pinos_buffer_steal (&pbuf, &size, &msg);
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outbuf = gst_buffer_new_wrapped (data, size);
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GST_BUFFER_PTS (outbuf) = GST_BUFFER_PTS (buffer);
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GST_BUFFER_DTS (outbuf) = GST_BUFFER_DTS (buffer);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
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GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buffer);
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GST_BUFFER_OFFSET_END (outbuf) = GST_BUFFER_OFFSET_END (buffer);
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gst_buffer_unref (buffer);
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gst_buffer_add_net_control_message_meta (outbuf, msg);
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g_object_unref (msg);
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return gst_pad_push (pay->srcpad, outbuf);
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/* ERRORS */
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add_fd_failed:
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{
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GST_WARNING_OBJECT (pay, "Adding fd failed: %s", err->message);
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gst_memory_unref(fdmem);
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g_clear_error (&err);
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return GST_FLOW_ERROR;
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}
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}
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static void
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gst_pinos_pay_finalize (GObject * object)
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{
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GstPinosPay *pay = GST_PINOS_PAY (object);
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GST_DEBUG_OBJECT (pay, "finalize");
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g_object_unref (pay->allocator);
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G_OBJECT_CLASS (gst_pinos_pay_parent_class)->finalize (object);
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}
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static void
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gst_pinos_pay_init (GstPinosPay * pay)
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{
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pay->srcpad = gst_pad_new_from_static_template (&gst_pinos_pay_src_template, "src");
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gst_element_add_pad (GST_ELEMENT (pay), pay->srcpad);
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pay->sinkpad = gst_pad_new_from_static_template (&gst_pinos_pay_sink_template, "sink");
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gst_pad_set_chain_function (pay->sinkpad, gst_pinos_pay_chain);
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gst_pad_set_event_function (pay->sinkpad, gst_pinos_pay_sink_event);
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gst_pad_set_query_function (pay->sinkpad, gst_pinos_pay_query);
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gst_element_add_pad (GST_ELEMENT (pay), pay->sinkpad);
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pay->allocator = gst_tmpfile_allocator_new ();
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}
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static void
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gst_pinos_pay_class_init (GstPinosPayClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_pinos_pay_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_pinos_pay_sink_template));
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gst_element_class_set_static_metadata (element_class,
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"Pinos Payloader", "Generic",
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"Pinos Payloader for zero-copy IPC with Pinos",
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"Wim Taymans <wim.taymans@gmail.com>");
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gobject_class->finalize = gst_pinos_pay_finalize;
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}
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