static void gst_xvimage_buffer_pool_finalize (GObject * object) { GstXvImageBufferPool *pool = GST_XVIMAGE_BUFFER_POOL_CAST (object); GST_LOG_OBJECT (pool, "finalize XvImage buffer pool %p", pool); if (pool->caps) gst_caps_unref (pool->caps); if (pool->allocator) gst_object_unref (pool->allocator); G_OBJECT_CLASS (gst_xvimage_buffer_pool_parent_class)->finalize (object); }
/* This function handles GstXImageBuffer creation depending on XShm availability */ static GstFlowReturn xvimage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer, GstBufferPoolAcquireParams * params) { GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool); GstVideoInfo *info; GstBuffer *xvimage; GstMemory *mem; GError *err = NULL; info = &xvpool->info; xvimage = gst_buffer_new (); mem = gst_xvimage_allocator_alloc (xvpool->allocator, xvpool->im_format, info, xvpool->padded_width, xvpool->padded_height, &xvpool->crop, &err); if (mem == NULL) { gst_buffer_unref (xvimage); goto no_buffer; } gst_buffer_append_memory (xvimage, mem); if (xvpool->add_metavideo) { GST_DEBUG_OBJECT (pool, "adding GstVideoMeta"); gst_buffer_add_video_meta_full (xvimage, GST_VIDEO_FRAME_FLAG_NONE, GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info), info->offset, info->stride); } *buffer = xvimage; return GST_FLOW_OK; /* ERROR */ no_buffer: { GST_WARNING_OBJECT (pool, "can't create image: %s", err->message); g_clear_error (&err); return GST_FLOW_ERROR; } }
/* This function handles GstXImageBuffer creation depending on XShm availability */ static GstFlowReturn xvimage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer, GstBufferPoolAcquireParams * params) { GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool); GstXvImageBufferPoolPrivate *priv = xvpool->priv; GstVideoInfo *info; GstBuffer *xvimage; GstXvImageMeta *meta; info = &priv->info; xvimage = gst_buffer_new (); meta = gst_buffer_add_xvimage_meta (xvimage, xvpool); if (meta == NULL) { gst_buffer_unref (xvimage); goto no_buffer; } if (priv->add_metavideo) { GST_DEBUG_OBJECT (pool, "adding GstVideoMeta"); gst_buffer_add_video_meta_full (xvimage, GST_VIDEO_FRAME_FLAG_NONE, GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info), info->offset, info->stride); } *buffer = xvimage; return GST_FLOW_OK; /* ERROR */ no_buffer: { GST_WARNING_OBJECT (pool, "can't create image"); return GST_FLOW_ERROR; } }
static gboolean xvimage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config) { GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool); GstVideoInfo info; GstCaps *caps; guint size, min_buffers, max_buffers; GstXvContext *context; if (!gst_buffer_pool_config_get_params (config, &caps, &size, &min_buffers, &max_buffers)) goto wrong_config; if (caps == NULL) goto no_caps; /* now parse the caps from the config */ if (!gst_video_info_from_caps (&info, caps)) goto wrong_caps; GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height, caps); context = gst_xvimage_allocator_peek_context (xvpool->allocator); xvpool->im_format = gst_xvcontext_get_format_from_info (context, &info); if (xvpool->im_format == -1) goto unknown_format; if (xvpool->caps) gst_caps_unref (xvpool->caps); xvpool->caps = gst_caps_ref (caps); /* enable metadata based on config of the pool */ xvpool->add_metavideo = gst_buffer_pool_config_has_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); /* parse extra alignment info */ xvpool->need_alignment = gst_buffer_pool_config_has_option (config, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT); if (xvpool->need_alignment) { gst_buffer_pool_config_get_video_alignment (config, &xvpool->align); GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", xvpool->align.padding_top, xvpool->align.padding_left, xvpool->align.padding_left, xvpool->align.padding_bottom); /* do padding and alignment */ gst_video_info_align (&info, &xvpool->align); gst_buffer_pool_config_set_video_alignment (config, &xvpool->align); /* we need the video metadata too now */ xvpool->add_metavideo = TRUE; } else { gst_video_alignment_reset (&xvpool->align); } /* add the padding */ xvpool->padded_width = GST_VIDEO_INFO_WIDTH (&info) + xvpool->align.padding_left + xvpool->align.padding_right; xvpool->padded_height = GST_VIDEO_INFO_HEIGHT (&info) + xvpool->align.padding_top + xvpool->align.padding_bottom; xvpool->info = info; xvpool->crop.x = xvpool->align.padding_left; xvpool->crop.y = xvpool->align.padding_top; xvpool->crop.w = xvpool->info.width; xvpool->crop.h = xvpool->info.height; gst_buffer_pool_config_set_params (config, caps, info.size, min_buffers, max_buffers); return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config); /* ERRORS */ wrong_config: { GST_WARNING_OBJECT (pool, "invalid config"); return FALSE; } no_caps: { GST_WARNING_OBJECT (pool, "no caps in config"); return FALSE; } wrong_caps: { GST_WARNING_OBJECT (pool, "failed getting geometry from caps %" GST_PTR_FORMAT, caps); return FALSE; } unknown_format: { GST_WARNING_OBJECT (pool, "failed to get format from caps %" GST_PTR_FORMAT, caps); return FALSE; } }
static gboolean xvimage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config) { GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool); GstXvImageBufferPoolPrivate *priv = xvpool->priv; GstVideoInfo info; GstCaps *caps; if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL)) goto wrong_config; if (caps == NULL) goto no_caps; /* now parse the caps from the config */ if (!gst_video_info_from_caps (&info, caps)) goto wrong_caps; GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height, caps); priv->im_format = gst_xvimagesink_get_format_from_info (xvpool->sink, &info); if (priv->im_format == -1) goto unknown_format; if (priv->caps) gst_caps_unref (priv->caps); priv->caps = gst_caps_ref (caps); /* enable metadata based on config of the pool */ priv->add_metavideo = gst_buffer_pool_config_has_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); /* parse extra alignment info */ priv->need_alignment = gst_buffer_pool_config_has_option (config, GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT); if (priv->need_alignment) { gst_buffer_pool_config_get_video_alignment (config, &priv->align); GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", priv->align.padding_top, priv->align.padding_left, priv->align.padding_left, priv->align.padding_bottom); /* do padding and alignment */ gst_video_info_align (&info, &priv->align); /* we need the video metadata too now */ priv->add_metavideo = TRUE; } else { gst_video_alignment_reset (&priv->align); } /* add the padding */ priv->padded_width = GST_VIDEO_INFO_WIDTH (&info) + priv->align.padding_left + priv->align.padding_right; priv->padded_height = GST_VIDEO_INFO_HEIGHT (&info) + priv->align.padding_top + priv->align.padding_bottom; priv->info = info; return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config); /* ERRORS */ wrong_config: { GST_WARNING_OBJECT (pool, "invalid config"); return FALSE; } no_caps: { GST_WARNING_OBJECT (pool, "no caps in config"); return FALSE; } wrong_caps: { GST_WARNING_OBJECT (pool, "failed getting geometry from caps %" GST_PTR_FORMAT, caps); return FALSE; } unknown_format: { GST_WARNING_OBJECT (xvpool->sink, "failed to get format from caps %" GST_PTR_FORMAT, caps); GST_ELEMENT_ERROR (xvpool->sink, RESOURCE, WRITE, ("Failed to create output image buffer of %dx%d pixels", priv->info.width, priv->info.height), ("Invalid input caps %" GST_PTR_FORMAT, caps)); return FALSE;; } }