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path: root/gst/rtpvp8/gstrtpvp8pay.c
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Diffstat (limited to 'gst/rtpvp8/gstrtpvp8pay.c')
-rw-r--r--gst/rtpvp8/gstrtpvp8pay.c442
1 files changed, 0 insertions, 442 deletions
diff --git a/gst/rtpvp8/gstrtpvp8pay.c b/gst/rtpvp8/gstrtpvp8pay.c
deleted file mode 100644
index 29d41c28b..000000000
--- a/gst/rtpvp8/gstrtpvp8pay.c
+++ /dev/null
@@ -1,442 +0,0 @@
-/*
- * gstrtpvp8pay.c - Source for GstRtpVP8Pay
- * Copyright (C) 2011 Sjoerd Simons <sjoerd@luon.net>
- * Copyright (C) 2011 Collabora Ltd.
- * Contact: Youness Alaoui <youness.alaoui@collabora.co.uk>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <gst/base/gstbitreader.h>
-#include <gst/rtp/gstrtppayloads.h>
-#include <gst/rtp/gstrtpbuffer.h>
-#include "dboolhuff.h"
-#include "gstrtpvp8pay.h"
-
-GST_DEBUG_CATEGORY_STATIC (gst_rtp_vp8_pay_debug);
-#define GST_CAT_DEFAULT gst_rtp_vp8_pay_debug
-
-#define DEFAULT_PICTURE_ID_MODE VP8_PAY_PICTURE_ID_7BITS
-
-G_DEFINE_TYPE (GstRtpVP8Pay, gst_rtp_vp8_pay, GST_TYPE_RTP_BASE_PAYLOAD);
-
-static GstStaticPadTemplate gst_rtp_vp8_pay_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("application/x-rtp, "
- "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ","
- "clock-rate = (int) 90000, encoding-name = (string) \"VP8-DRAFT-IETF-01\""));
-
-static GstStaticPadTemplate gst_rtp_vp8_pay_sink_template =
-GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/x-vp8"));
-
-static void
-gst_rtp_vp8_pay_init (GstRtpVP8Pay * obj)
-{
- /* TODO: Make it configurable */
- obj->picture_id_mode = DEFAULT_PICTURE_ID_MODE;
- if (obj->picture_id_mode == VP8_PAY_PICTURE_ID_7BITS)
- obj->picture_id = g_random_int_range (0, G_MAXUINT8) & 0x7F;
- else if (obj->picture_id_mode == VP8_PAY_PICTURE_ID_15BITS)
- obj->picture_id = g_random_int_range (0, G_MAXUINT16) & 0x7FFF;
-}
-
-static GstFlowReturn gst_rtp_vp8_pay_handle_buffer (GstRTPBasePayload * payload,
- GstBuffer * buffer);
-static gboolean gst_rtp_vp8_pay_sink_event (GstRTPBasePayload * payload,
- GstEvent * event);
-static gboolean gst_rtp_vp8_pay_set_caps (GstRTPBasePayload * payload,
- GstCaps * caps);
-
-
-static void
-gst_rtp_vp8_pay_class_init (GstRtpVP8PayClass * gst_rtp_vp8_pay_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (gst_rtp_vp8_pay_class);
- GstRTPBasePayloadClass *pay_class =
- GST_RTP_BASE_PAYLOAD_CLASS (gst_rtp_vp8_pay_class);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_rtp_vp8_pay_sink_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_rtp_vp8_pay_src_template));
-
- gst_element_class_set_static_metadata (element_class, "RTP VP8 payloader",
- "Codec/Payloader/Network/RTP",
- "Puts VP8 video in RTP packets)", "Sjoerd Simons <sjoerd@luon.net>");
-
- pay_class->handle_buffer = gst_rtp_vp8_pay_handle_buffer;
- pay_class->sink_event = gst_rtp_vp8_pay_sink_event;
- pay_class->set_caps = gst_rtp_vp8_pay_set_caps;
-
- GST_DEBUG_CATEGORY_INIT (gst_rtp_vp8_pay_debug, "rtpvp8pay", 0,
- "VP8 Video RTP Payloader");
-}
-
-static gboolean
-gst_rtp_vp8_pay_parse_frame (GstRtpVP8Pay * self, GstBuffer * buffer)
-{
- GstBitReader *reader = NULL;
- guint8 *data;
- gsize size;
- GstMapInfo map;
- int i;
- gboolean keyframe;
- guint32 partition0_size;
- guint8 version;
- guint8 tmp8 = 0;
- guint8 partitions;
- guint offset;
- BOOL_DECODER bc;
- guint8 *pdata;
-
- if (G_UNLIKELY (gst_buffer_get_size (buffer) < 3))
- goto error;
-
- if (!gst_buffer_map (buffer, &map, GST_MAP_READ) || !map.data)
- goto error;
-
- data = map.data;
- size = map.size;
- reader = gst_bit_reader_new (data, size);
-
- self->is_keyframe = keyframe = ((data[0] & 0x1) == 0);
- version = (data[0] >> 1) & 0x7;
-
- if (G_UNLIKELY (version > 3)) {
- GST_ERROR_OBJECT (self, "Unknown VP8 version %u", version);
- goto error;
- }
-
- /* keyframe, version and show_frame use 5 bits */
- partition0_size = data[2] << 11 | data[1] << 3 | (data[0] >> 5);
-
- /* Include the uncompressed data blob in the first partition */
- offset = keyframe ? 10 : 3;
- partition0_size += offset;
-
- if (!gst_bit_reader_skip (reader, 24))
- goto error;
-
- if (keyframe) {
- /* check start tag: 0x9d 0x01 0x2a */
- if (!gst_bit_reader_get_bits_uint8 (reader, &tmp8, 8) || tmp8 != 0x9d)
- goto error;
-
- if (!gst_bit_reader_get_bits_uint8 (reader, &tmp8, 8) || tmp8 != 0x01)
- goto error;
-
- if (!gst_bit_reader_get_bits_uint8 (reader, &tmp8, 8) || tmp8 != 0x2a)
- goto error;
-
- /* Skip horizontal size code (16 bits) vertical size code (16 bits) */
- if (!gst_bit_reader_skip (reader, 32))
- goto error;
- }
-
- offset = keyframe ? 10 : 3;
- vp8dx_start_decode (&bc, data + offset, size - offset);
-
- if (keyframe) {
- /* color space (1 bit) and clamping type (1 bit) */
- vp8dx_decode_bool (&bc, 0x80);
- vp8dx_decode_bool (&bc, 0x80);
- }
-
- /* segmentation_enabled */
- if (vp8dx_decode_bool (&bc, 0x80)) {
- guint8 update_mb_segmentation_map = vp8dx_decode_bool (&bc, 0x80);
- guint8 update_segment_feature_data = vp8dx_decode_bool (&bc, 0x80);
-
- if (update_segment_feature_data) {
- /* skip segment feature mode */
- vp8dx_decode_bool (&bc, 0x80);
-
- /* quantizer update */
- for (i = 0; i < 4; i++) {
- /* skip flagged quantizer value (7 bits) and sign (1 bit) */
- if (vp8dx_decode_bool (&bc, 0x80))
- vp8_decode_value (&bc, 8);
- }
-
- /* loop filter update */
- for (i = 0; i < 4; i++) {
- /* skip flagged lf update value (6 bits) and sign (1 bit) */
- if (vp8dx_decode_bool (&bc, 0x80))
- vp8_decode_value (&bc, 7);
- }
- }
-
- if (update_mb_segmentation_map) {
- /* segment prob update */
- for (i = 0; i < 3; i++) {
- /* skip flagged segment prob */
- if (vp8dx_decode_bool (&bc, 0x80))
- vp8_decode_value (&bc, 8);
- }
- }
- }
-
- /* skip filter type (1 bit), loop filter level (6 bits) and
- * sharpness level (3 bits) */
- vp8_decode_value (&bc, 1);
- vp8_decode_value (&bc, 6);
- vp8_decode_value (&bc, 3);
-
- /* loop_filter_adj_enabled */
- if (vp8dx_decode_bool (&bc, 0x80)) {
-
- /* delta update */
- if (vp8dx_decode_bool (&bc, 0x80)) {
-
- for (i = 0; i < 8; i++) {
- /* 8 updates, 1 bit indicate whether there is one and if follow by a
- * 7 bit update */
- if (vp8dx_decode_bool (&bc, 0x80))
- vp8_decode_value (&bc, 7);
- }
- }
- }
-
- if (vp8dx_bool_error (&bc))
- goto error;
-
- tmp8 = vp8_decode_value (&bc, 2);
-
- partitions = 1 << tmp8;
-
- /* Check if things are still sensible */
- if (partition0_size + (partitions - 1) * 3 >= size)
- goto error;
-
- /* partition data is right after the mode partition */
- pdata = data + partition0_size;
-
- /* Set up mapping */
- self->n_partitions = partitions + 1;
- self->partition_offset[0] = 0;
- self->partition_size[0] = partition0_size + (partitions - 1) * 3;
-
- self->partition_offset[1] = self->partition_size[0];
- for (i = 1; i < partitions; i++) {
- guint psize = (pdata[2] << 16 | pdata[1] << 8 | pdata[0]);
-
- pdata += 3;
- self->partition_size[i] = psize;
- self->partition_offset[i + 1] = self->partition_offset[i] + psize;
- }
-
- /* Check that our partition offsets and sizes don't go outsize the buffer
- * size. */
- if (self->partition_offset[i] >= size)
- goto error;
-
- self->partition_size[i] = size - self->partition_offset[i];
-
- self->partition_offset[i + 1] = size;
-
- gst_bit_reader_free (reader);
- gst_buffer_unmap (buffer, &map);
- return TRUE;
-
-error:
- GST_DEBUG ("Failed to parse frame");
- if (reader) {
- gst_bit_reader_free (reader);
- gst_buffer_unmap (buffer, &map);
- }
- return FALSE;
-}
-
-static guint
-gst_rtp_vp8_offset_to_partition (GstRtpVP8Pay * self, guint offset)
-{
- int i;
-
- for (i = 0; i < self->n_partitions; i++) {
- if (offset >= self->partition_offset[i] &&
- offset < self->partition_offset[i + 1])
- return i;
- }
-
- return i;
-}
-
-static gsize
-gst_rtp_vp8_calc_header_len (GstRtpVP8Pay * self)
-{
- switch (self->picture_id_mode) {
- case VP8_PAY_PICTURE_ID_7BITS:
- return 3;
- case VP8_PAY_PICTURE_ID_15BITS:
- return 4;
- case VP8_PAY_NO_PICTURE_ID:
- default:
- return 1;
- }
-}
-
-
-static gsize
-gst_rtp_vp8_calc_payload_len (GstRtpVP8Pay * self)
-{
- GstRTPBasePayload *payload = GST_RTP_BASE_PAYLOAD (self);
- return gst_rtp_buffer_calc_payload_len (GST_RTP_BASE_PAYLOAD_MTU (payload) -
- gst_rtp_vp8_calc_header_len (self), 0, 0);
-}
-
-/* When growing the vp8 header keep gst_rtp_vp8_calc_payload_len in sync */
-static GstBuffer *
-gst_rtp_vp8_create_header_buffer (GstRtpVP8Pay * self, guint8 partid,
- gboolean start, gboolean mark, GstBuffer * in)
-{
- GstBuffer *out;
- guint8 *p;
- GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
-
- out = gst_rtp_buffer_new_allocate (gst_rtp_vp8_calc_header_len (self), 0, 0);
- gst_rtp_buffer_map (out, GST_MAP_READWRITE, &rtpbuffer);
- p = gst_rtp_buffer_get_payload (&rtpbuffer);
- /* X=0,R=0,N=0,S=start,PartID=partid */
- p[0] = (start << 4) | partid;
- if (self->picture_id_mode != VP8_PAY_NO_PICTURE_ID) {
- /* Enable X=1 */
- p[0] |= 0x80;
- /* X: I=1,L=0,T=0,K=0,RSV=0 */
- p[1] = 0x80;
- if (self->picture_id_mode == VP8_PAY_PICTURE_ID_7BITS) {
- /* I: 7 bit picture_id */
- p[2] = self->picture_id & 0x7F;
- } else {
- /* I: 15 bit picture_id */
- p[2] = 0x80 | ((self->picture_id & 0x7FFF) >> 8);
- p[3] = self->picture_id & 0xFF;
- }
- }
-
- gst_rtp_buffer_set_marker (&rtpbuffer, mark);
-
- gst_rtp_buffer_unmap (&rtpbuffer);
-
- GST_BUFFER_DURATION (out) = GST_BUFFER_DURATION (in);
- GST_BUFFER_PTS (out) = GST_BUFFER_PTS (in);
-
- return out;
-}
-
-
-static guint
-gst_rtp_vp8_payload_next (GstRtpVP8Pay * self,
- GstBufferList * list, guint offset, GstBuffer * buffer)
-{
- guint partition;
- GstBuffer *header;
- GstBuffer *sub;
- GstBuffer *out;
- gboolean mark;
- gsize remaining;
- gsize available;
-
- remaining = gst_buffer_get_size (buffer) - offset;
- available = gst_rtp_vp8_calc_payload_len (self);
- if (available > remaining)
- available = remaining;
-
- partition = gst_rtp_vp8_offset_to_partition (self, offset);
- g_assert (partition < self->n_partitions);
-
- mark = (remaining == available);
- /* whole set of partitions, payload them and done */
- header = gst_rtp_vp8_create_header_buffer (self, partition,
- offset == self->partition_offset[partition], mark, buffer);
- sub = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL, offset, available);
-
- out = gst_buffer_append (header, sub);
-
- gst_buffer_list_insert (list, -1, out);
-
- return available;
-}
-
-
-static GstFlowReturn
-gst_rtp_vp8_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer)
-{
- GstRtpVP8Pay *self = GST_RTP_VP8_PAY (payload);
- GstFlowReturn ret;
- GstBufferList *list;
- guint offset;
-
- if (G_UNLIKELY (!gst_rtp_vp8_pay_parse_frame (self, buffer))) {
- g_message ("Failed to parse frame");
- return GST_FLOW_ERROR;
- }
-
- list = gst_buffer_list_new ();
-
- for (offset = 0; offset < gst_buffer_get_size (buffer);)
- offset += gst_rtp_vp8_payload_next (self, list, offset, buffer);
-
- ret = gst_rtp_base_payload_push_list (payload, list);
-
- /* Incremenent and wrap the picture id if it overflows */
- if ((self->picture_id_mode == VP8_PAY_PICTURE_ID_7BITS &&
- ++self->picture_id >= 0x80) ||
- (self->picture_id_mode == VP8_PAY_PICTURE_ID_15BITS &&
- ++self->picture_id >= 0x8000))
- self->picture_id = 0;
-
- return ret;
-}
-
-static gboolean
-gst_rtp_vp8_pay_sink_event (GstRTPBasePayload * payload, GstEvent * event)
-{
- GstRtpVP8Pay *self = GST_RTP_VP8_PAY (payload);
-
- if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_START) {
- if (self->picture_id_mode == VP8_PAY_PICTURE_ID_7BITS)
- self->picture_id = g_random_int_range (0, G_MAXUINT8) & 0x7F;
- else if (self->picture_id_mode == VP8_PAY_PICTURE_ID_15BITS)
- self->picture_id = g_random_int_range (0, G_MAXUINT16) & 0x7FFF;
- }
-
- return GST_RTP_BASE_PAYLOAD_CLASS (gst_rtp_vp8_pay_parent_class)->sink_event
- (payload, event);
-}
-
-static gboolean
-gst_rtp_vp8_pay_set_caps (GstRTPBasePayload * payload, GstCaps * caps)
-{
- gst_rtp_base_payload_set_options (payload, "video", TRUE,
- "VP8-DRAFT-IETF-01", 90000);
- return gst_rtp_base_payload_set_outcaps (payload, NULL);
-}
-
-gboolean
-gst_rtp_vp8_pay_plugin_init (GstPlugin * plugin)
-{
- return gst_element_register (plugin, "rtpvp8pay",
- GST_RANK_MARGINAL, GST_TYPE_RTP_VP8_PAY);
-}
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