gstreamer/subprojects/gstreamer-vaapi/gst/vaapi/gstvaapidecodedoc.c

227 lines
7.7 KiB
C

/*
* gstvaapidecodedoc.c - VA-API video decoders documentation
*
* Copyright (C) 2016 Intel Corporation
* Author: Victor Jaquez <victorx.jaquez@intel.com>
*
* 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 Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-vaapijpegdec
* @short_description: A VA-API based JPEG image decoder
*
* vaapijpegdec decodes a JPEG image to surfaces suitable for the
* vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/image.jpeg ! jpegparse ! vaapijpegdec ! imagefreeze ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapimpeg2dec
* @short_description: A VA-API based MPEG2 video decoder
*
* vaapimpeg2dec decodes from MPEG2 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/sample.mpg ! mpegpsdemux ! vaapimpeg2dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapimpeg4dec
* @short_description: A VA-API based MPEG4 video decoder
*
* vaapimpeg4dec decodes from MPEG4 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/sample.mpeg4 ! mpeg4videoparse ! vaapimpeg4dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapih263dec
* @short_description: A VA-API based H263 video decoder
*
* vaapih263dec decodes from H263 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/sample.h263 ! h263parse ! vaapih263dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapih264dec
* @short_description: A VA-API based H264 video decoder
*
* vaapih264dec decodes from H264 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/big_buck_bunny.mov ! qtdemux ! h264parse ! vaapih264dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapih265dec
* @short_description: A VA-API based H265 video decoder
*
* vaapih265dec decodes from H265 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=./sample.bin ! h265parse ! vaapih265dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapivc1dec
* @short_description: A VA-API based VC1 video decoder
*
* vaapivc1dec decodes from VC1 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=~/elephants_dream.wmv ! asfdemux ! vaapivc1dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapivp8dec
* @short_description: A VA-API based VP8 video decoder
*
* vaapivp8dec decodes from VP8 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 filesrc location=./sample.webm ! matroskademux ! vaapivp8dec ! vaapisink
* ]|
*/
/**
* SECTION:element-vaapivp9dec
* @short_description: A VA-API based VP9 video decoder
*
* vaapivp9dec decodes from VP9 bitstreams to surfaces suitable
* for the vaapisink or vaapipostproc elements using the installed
* [VA-API](https://wiki.freedesktop.org/www/Software/vaapi/) back-end.
*
* In the case of OpenGL based elements, the buffers have the
* #GstVideoGLTextureUploadMeta meta, which efficiently copies the
* content of the VA-API surface into a GL texture.
*
* Also it can deliver normal video buffers that can be rendered or
* processed by other elements, but the performance would be rather
* bad.
*
* ## Example launch line
* |[
* gst-launch-1.0 filesrc location=./sample.vp9.webm ! ivfparse ! vaapivp9dec ! vaapisink
* ]|
*/