mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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fca3e1d85d
Do not use dynamic types anymore. The reason is that it's difficult: - to maintain a shared type database over a network. - the extra overhead when translating between processes and for maintaining the translation tables. - race conditions in translating in RT-threads, this is a problem because we want to make event streams. We now have simple enums with types and extension points for all types. This is also nicer to use in general. We don't need the mapper anymore or pass strings around as types. There is a parallel type info system to get more info about ids and enums and their hierarchy. It can also be used for debugging.
360 lines
11 KiB
C
360 lines
11 KiB
C
/* Spa
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* Copyright (C) 2017 Wim Taymans <wim.taymans@gmail.com>
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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 St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <spa/support/log-impl.h>
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#include <spa/pod/pod.h>
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#include <spa/pod/builder.h>
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#include <spa/pod/parser.h>
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#include <spa/param/video/format-utils.h>
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#include <spa/debug/pod.h>
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#include <spa/debug/format.h>
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#include <spa/debug/types.h>
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#if 0
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/* { video/raw,
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* format: (int 1) { 1 2 },
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* size: (rect (320 240)) { (1 1) (MAX MAX) },
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* framerate: (frac (25 1)) { (0 1) (MAX 1) },
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*
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* "(object $format
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* (id $video) (id $raw)
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* (prop $format (int $I420) { $I420 $YUY2 } )
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* (prop $size (rect (320 240)) [ (1 1) (MAX MAX) ] )
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* (prop $framerate (frac (25 1))))
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* "
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*
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*/
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bool: true | false
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int: <num>
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float: <num.frac>
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string: "<string>"
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bytes: "$<base64>"
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pointer: "@<pointer>"
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rectangle: "<width>x<height>"
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fraction: "<num>/<denom>"
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bitmask: "|<bits>"
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array: "[<values>,...]"
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object: "{<key>: <value>,...}"
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key: "<name>"
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"format": "S16LE",
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"format": [ "S16LE", "S24LE" ],
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"size": "320x240",
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"+size": [ "320x240", { "min": "320x240", "max": "640x480", "step": "8x8" ],
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"-size": [ "320x240", ["320x240", "640x480", "512x400"] ],
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"schema.size": { "default": "320x240",
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"flags": ["range", "optional"],
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"values": ["320x240", "640x480", "8x8"] }
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"size-schema":
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{ "default": "320x240",
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"values": ["320x240", "640x480"]
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},
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"size-schema":
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{ "default": "320x240",
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"values": { "min": "320x240", "max": "640x480", "step": "8x8" }
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},
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"size-alt": { "def": "320x240", "type": "range", "vals": ["320x240", "640x480", "8x8"] },
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"size-alt": { "def": "320x240", "type": "enum", "vals": ["320x240", "640x480"],
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{
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"type": "audio/raw",
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"format": ["S16LE", "enum", "S16LE", "S24LE" ],
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"size": [ "320x240", "range", "320x240", "640x480" ],
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"framerate": [ "25/1", "range", "25/1", "30/1" ]
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}
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{ "type": "audio", "subtype": "raw",
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"format": "S16LE",
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"size": { "min": "320x240", "max": "640x480", "step": "8x8" },
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"framerate": [ "25/1", "30/1" ] }
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* JSON based format description
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[ <type>,
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[ <media-type>, <media-subtype> ],
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{
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<key> : [ <type>, <value>, [ <value>, ... ] ],
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...
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}
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]
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<type> = "123.."
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1: s = string : "value"
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i = int : <number>
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f = float : <float>
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b = bool : true | false
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R = rectangle : [ <width>, <height> ]
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F = fraction : [ <num>, <denom> ]
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2: - = default (only default value present)
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e = enum : [ <value>, ... ]
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f = flags : [ <number> ]
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m = min/max : [ <min>, <max> ]
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s = min/max/step : [ <min>, <max>, <step> ]
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3: u = unset : value is unset, choose from options or default
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o = optional : value does not need to be set
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r = readonly : value is read only
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d = deprecated : value is deprecated
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[ "Format",
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[ "video", "raw"],
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{
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"format" : [ "se", "I420", [ "I420", "YUY2" ] ],
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"size" : [ "Rmu", [320, 240], [[ 640, 480], [1024,786]]],
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"framerate" : [ "Fsu", [25, 1], [[ 0, 1], [65536,1]]]
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}
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]
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[ "Format",
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[ "audio", "raw"],
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{
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"format" : [ "se", "S16LE", [ "F32LE", "S16LE" ] ],
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"rate" : [ "imu", 44100, [8000, 96000]],
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"channels" : [ "imu", 1, [1, 4096]]
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"interleaved" : [ "beo", true ]
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}
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]
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spa_build(SPA_MEDIA_TYPE_VIDEO, SPA_MEDIA_SUBTYPE_RAW,
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SPA_FORMAT_VIDEO_format, SPA_PROP_TYPE_ID,
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video_format.I420
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SPA_POD_PROP_FLAG_UNSET |
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SPA_PROP_RANGE_ENUM, 2,
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video_format.I420,
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video_format.YUY2,
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SPA_FORMAT_VIDEO_size, SPA_PROP_TYPE_RECTANGLE,
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320, 240,
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SPA_POD_PROP_FLAG_UNSET |
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SPA_PROP_RANGE_MIN_MAX,
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1, 1,
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INT32_MAX, INT32_MAX,
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SPA_FORMAT_VIDEO_framerate, SPA_PROP_TYPE_FRACTION, 25, 1,
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SPA_POD_PROP_FLAG_UNSET | SPA_PROP_RANGE_MIN_MAX, 0, 1, INT32_MAX, 1, 0);
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#endif
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static void do_static_struct(void)
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{
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struct _test_format {
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struct spa_pod_object fmt;
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struct {
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struct spa_pod_id media_type SPA_ALIGNED(8);
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struct spa_pod_id media_subtype SPA_ALIGNED(8);
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struct spa_pod_prop prop_format SPA_ALIGNED(8);
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struct {
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uint32_t def_format;
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uint32_t enum_format[2];
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} format_vals;
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struct spa_pod_prop prop_size SPA_ALIGNED(8);
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struct {
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struct spa_rectangle def_size;
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struct spa_rectangle min_size;
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struct spa_rectangle max_size;
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} size_vals;
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struct spa_pod_prop prop_framerate SPA_ALIGNED(8);
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struct {
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struct spa_fraction def_framerate;
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struct spa_fraction min_framerate;
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struct spa_fraction max_framerate;
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} framerate_vals;
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} props;
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} test_format = {
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SPA_POD_OBJECT_INIT(sizeof(test_format.props) + sizeof(struct spa_pod_object_body),
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0, SPA_ID_OBJECT_Format),
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{
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SPA_POD_ID_INIT(SPA_MEDIA_TYPE_video),
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SPA_POD_ID_INIT(SPA_MEDIA_SUBTYPE_raw),
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SPA_POD_PROP_INIT(sizeof(test_format.props.format_vals) +
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sizeof(struct spa_pod_prop_body),
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SPA_FORMAT_VIDEO_format,
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SPA_POD_PROP_RANGE_ENUM | SPA_POD_PROP_FLAG_UNSET,
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sizeof(uint32_t), SPA_POD_TYPE_ID),
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{
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SPA_VIDEO_FORMAT_I420,
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{ SPA_VIDEO_FORMAT_I420, SPA_VIDEO_FORMAT_YUY2 }
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},
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SPA_POD_PROP_INIT(sizeof(test_format.props.size_vals) +
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sizeof(struct spa_pod_prop_body),
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SPA_FORMAT_VIDEO_size,
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SPA_POD_PROP_RANGE_MIN_MAX | SPA_POD_PROP_FLAG_UNSET,
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sizeof(struct spa_rectangle), SPA_POD_TYPE_RECTANGLE),
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{
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SPA_RECTANGLE(320,243),
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SPA_RECTANGLE(1,1), SPA_RECTANGLE(INT32_MAX, INT32_MAX)
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},
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SPA_POD_PROP_INIT(sizeof(test_format.props.framerate_vals) +
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sizeof(struct spa_pod_prop_body),
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SPA_FORMAT_VIDEO_framerate,
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SPA_POD_PROP_RANGE_MIN_MAX | SPA_POD_PROP_FLAG_UNSET,
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sizeof(struct spa_fraction), SPA_POD_TYPE_FRACTION),
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{
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SPA_FRACTION(25,1),
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SPA_FRACTION(0,1), SPA_FRACTION(INT32_MAX,1)
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}
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}
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};
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spa_debug_pod(0, spa_debug_types, &test_format.fmt.pod);
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spa_debug_format(0, NULL, &test_format.fmt.pod);
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{
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uint32_t format = -1;
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int res;
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struct spa_fraction frac = { -1, -1 };
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res = spa_pod_object_parse(&test_format.fmt.pod,
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":", SPA_FORMAT_VIDEO_format, "I", &format,
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":", SPA_FORMAT_VIDEO_framerate, "F", &frac, NULL);
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printf("%d format %d num %d denom %d\n", res, format, frac.num, frac.denom);
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spa_pod_fixate(&test_format.fmt.pod);
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res = spa_pod_object_parse(&test_format.fmt.pod,
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":", SPA_FORMAT_VIDEO_format, "I", &format,
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":", SPA_FORMAT_VIDEO_framerate, "F", &frac, NULL);
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printf("%d format %d num %d denom %d\n", res, format, frac.num, frac.denom);
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}
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}
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int main(int argc, char *argv[])
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{
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struct spa_pod_builder b = { NULL, };
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uint8_t buffer[1024];
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struct spa_pod_object *fmt;
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spa_pod_builder_init(&b, buffer, sizeof(buffer));
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spa_pod_builder_push_object(&b, 0, SPA_ID_OBJECT_Format);
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spa_pod_builder_id(&b, SPA_MEDIA_TYPE_video);
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spa_pod_builder_id(&b, SPA_MEDIA_SUBTYPE_raw);
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spa_pod_builder_push_prop(&b, SPA_FORMAT_VIDEO_format,
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SPA_POD_PROP_RANGE_ENUM | SPA_POD_PROP_FLAG_UNSET);
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spa_pod_builder_id(&b, SPA_VIDEO_FORMAT_I420);
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spa_pod_builder_id(&b, SPA_VIDEO_FORMAT_I420);
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spa_pod_builder_id(&b, SPA_VIDEO_FORMAT_YUY2);
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spa_pod_builder_pop(&b);
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struct spa_rectangle size_min_max[] = { {1, 1}, {INT32_MAX, INT32_MAX} };
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spa_pod_builder_push_prop(&b,
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SPA_FORMAT_VIDEO_size,
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SPA_POD_PROP_RANGE_MIN_MAX | SPA_POD_PROP_FLAG_UNSET);
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spa_pod_builder_rectangle(&b, 320, 240);
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spa_pod_builder_raw(&b, size_min_max, sizeof(size_min_max));
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spa_pod_builder_pop(&b);
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struct spa_fraction rate_min_max[] = { {0, 1}, {INT32_MAX, 1} };
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spa_pod_builder_push_prop(&b,
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SPA_FORMAT_VIDEO_framerate,
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SPA_POD_PROP_RANGE_MIN_MAX | SPA_POD_PROP_FLAG_UNSET);
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spa_pod_builder_fraction(&b, 25, 1);
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spa_pod_builder_raw(&b, rate_min_max, sizeof(rate_min_max));
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spa_pod_builder_pop(&b);
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fmt = spa_pod_builder_pop(&b);
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spa_debug_pod(0, spa_debug_types, &fmt->pod);
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spa_pod_builder_init(&b, buffer, sizeof(buffer));
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fmt = spa_pod_builder_object(&b,
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0, SPA_ID_OBJECT_Format,
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"I", SPA_MEDIA_TYPE_video,
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"I", SPA_MEDIA_SUBTYPE_raw,
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":", SPA_FORMAT_VIDEO_format, "Ieu", SPA_VIDEO_FORMAT_I420,
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2, SPA_VIDEO_FORMAT_I420,
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SPA_VIDEO_FORMAT_YUY2,
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":", SPA_FORMAT_VIDEO_size, "Rru", &SPA_RECTANGLE(320,241),
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2, &SPA_RECTANGLE(1,1),
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&SPA_RECTANGLE(INT32_MAX,INT32_MAX),
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":", SPA_FORMAT_VIDEO_framerate, "Fru", &SPA_FRACTION(25,1),
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2, &SPA_FRACTION(0,1),
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&SPA_FRACTION(INT32_MAX,1));
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spa_debug_pod(0, spa_debug_types, &fmt->pod);
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spa_debug_format(0, NULL, &fmt->pod);
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spa_pod_builder_init(&b, buffer, sizeof(buffer));
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/*
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* ( "Format",
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* ("video", "raw" ),
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* {
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* "format": ( "seu", "I420", ( "I420","YUY2" ) ),
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* "size": ( "Rru", (320, 242), ( (1,1), (MAX, MAX)) ),
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* "framerate": ( "Fru", (25, 1), ( (0,1), (MAX, 1)) )
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* }
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* )
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*/
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fmt = spa_pod_builder_add(&b,
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"<", 0, SPA_ID_OBJECT_Format,
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"I", SPA_MEDIA_TYPE_video,
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"I", SPA_MEDIA_SUBTYPE_raw,
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":", SPA_FORMAT_VIDEO_format, "Ieu", SPA_VIDEO_FORMAT_I420,
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2, SPA_VIDEO_FORMAT_I420,
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SPA_VIDEO_FORMAT_YUY2,
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":", SPA_FORMAT_VIDEO_size, "Rru", &SPA_RECTANGLE(320,242),
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2, &SPA_RECTANGLE(1,1),
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&SPA_RECTANGLE(INT32_MAX,INT32_MAX),
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":", SPA_FORMAT_VIDEO_framerate, "Fru", &SPA_FRACTION(25,1),
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2, &SPA_FRACTION(0,1),
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&SPA_FRACTION(INT32_MAX,1),
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">", NULL);
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spa_debug_pod(0, spa_debug_types, &fmt->pod);
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spa_debug_format(0, NULL, &fmt->pod);
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do_static_struct();
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#if 0
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printf("media type is enum %d\n", spa_type_is_a(SPA_TYPE__MediaType, SPA_TYPE_ENUM_BASE));
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printf("media sybtype is enum %d\n",
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spa_type_is_a(SPA_TYPE__MediaSubtype, SPA_TYPE_ENUM_BASE));
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printf("format is enum %d\n", spa_type_is_a(SPA_TYPE__Format, SPA_TYPE_ENUM_BASE));
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printf("format is pod %d\n", spa_type_is_a(SPA_TYPE__Format, SPA_TYPE_POD_BASE));
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printf("format is object %d\n", spa_type_is_a(SPA_TYPE__Format, SPA_TYPE_POD_OBJECT_BASE));
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#endif
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return 0;
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}
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