mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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164 lines
6.5 KiB
C
164 lines
6.5 KiB
C
/* Simple Plugin API
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* Copyright (C) 2016 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 <stdint.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <spa/video/raw.h>
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#include <spa/video/format.h>
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#include <spa/format-builder.h>
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#include <lib/props.h>
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typedef struct {
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uint32_t key;
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uint32_t type;
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off_t offset;
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} ParseInfo;
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static const ParseInfo raw_parse_info[] = {
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{ SPA_PROP_ID_VIDEO_INFO, SPA_POD_TYPE_BYTES, offsetof (SpaVideoInfo, info.raw) },
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{ SPA_PROP_ID_VIDEO_FORMAT, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.format) },
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{ SPA_PROP_ID_VIDEO_SIZE, SPA_POD_TYPE_RECTANGLE, offsetof (SpaVideoInfo, info.raw.size) },
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{ SPA_PROP_ID_VIDEO_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.raw.framerate) },
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{ SPA_PROP_ID_VIDEO_MAX_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.raw.max_framerate) },
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{ SPA_PROP_ID_VIDEO_VIEWS, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.views) },
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{ SPA_PROP_ID_VIDEO_INTERLACE_MODE, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.interlace_mode) },
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{ SPA_PROP_ID_VIDEO_PIXEL_ASPECT_RATIO, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.raw.pixel_aspect_ratio) },
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{ SPA_PROP_ID_VIDEO_MULTIVIEW_MODE, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.multiview_mode) },
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{ SPA_PROP_ID_VIDEO_MULTIVIEW_FLAGS, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.multiview_flags) },
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{ SPA_PROP_ID_VIDEO_CHROMA_SITE, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.chroma_site) },
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{ SPA_PROP_ID_VIDEO_COLOR_RANGE, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.color_range) },
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{ SPA_PROP_ID_VIDEO_COLOR_MATRIX, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.color_matrix) },
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{ SPA_PROP_ID_VIDEO_TRANSFER_FUNCTION, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.transfer_function) },
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{ SPA_PROP_ID_VIDEO_COLOR_PRIMARIES, SPA_POD_TYPE_INT, offsetof (SpaVideoInfo, info.raw.color_primaries) },
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{ 0, }
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};
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static const ParseInfo h264_parse_info[] = {
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{ SPA_PROP_ID_VIDEO_INFO, SPA_POD_TYPE_BYTES, offsetof (SpaVideoInfo, info.h264) },
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{ SPA_PROP_ID_VIDEO_SIZE, SPA_POD_TYPE_RECTANGLE, offsetof (SpaVideoInfo, info.h264.size) },
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{ SPA_PROP_ID_VIDEO_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.h264.framerate) },
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{ SPA_PROP_ID_VIDEO_MAX_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.h264.max_framerate) },
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{ 0, }
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};
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static const ParseInfo mjpg_parse_info[] = {
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{ SPA_PROP_ID_VIDEO_INFO, SPA_POD_TYPE_BYTES, offsetof (SpaVideoInfo, info.h264) },
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{ SPA_PROP_ID_VIDEO_SIZE, SPA_POD_TYPE_RECTANGLE, offsetof (SpaVideoInfo, info.h264.size) },
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{ SPA_PROP_ID_VIDEO_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.h264.framerate) },
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{ SPA_PROP_ID_VIDEO_MAX_FRAMERATE, SPA_POD_TYPE_FRACTION, offsetof (SpaVideoInfo, info.h264.max_framerate) },
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{ 0, }
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};
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static const ParseInfo *
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parse_info_find (const ParseInfo *info, uint32_t key, uint32_t type)
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{
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while (info->key) {
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if (info->key == key && info->type == type)
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return info;
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info++;
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}
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return NULL;
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}
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SpaResult
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spa_format_video_parse (const SpaFormat *format,
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SpaVideoInfo *info)
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{
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SpaPODProp *prop;
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const ParseInfo *pinfo, *find;
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if (format->body.media_type.value != SPA_MEDIA_TYPE_VIDEO)
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return SPA_RESULT_INVALID_MEDIA_TYPE;
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info->media_type = format->body.media_type.value;
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info->media_subtype = format->body.media_subtype.value;
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switch (info->media_subtype) {
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case SPA_MEDIA_SUBTYPE_RAW:
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pinfo = raw_parse_info;
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break;
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case SPA_MEDIA_SUBTYPE_H264:
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pinfo = h264_parse_info;
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break;
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case SPA_MEDIA_SUBTYPE_MJPG:
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pinfo = mjpg_parse_info;
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break;
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case SPA_MEDIA_SUBTYPE_DV:
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case SPA_MEDIA_SUBTYPE_MPEGTS:
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case SPA_MEDIA_SUBTYPE_H263:
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case SPA_MEDIA_SUBTYPE_MPEG1:
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case SPA_MEDIA_SUBTYPE_MPEG2:
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case SPA_MEDIA_SUBTYPE_MPEG4:
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case SPA_MEDIA_SUBTYPE_XVID:
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case SPA_MEDIA_SUBTYPE_VC1:
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case SPA_MEDIA_SUBTYPE_VP8:
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case SPA_MEDIA_SUBTYPE_VP9:
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case SPA_MEDIA_SUBTYPE_JPEG:
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case SPA_MEDIA_SUBTYPE_BAYER:
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return SPA_RESULT_NOT_IMPLEMENTED;
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default:
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return SPA_RESULT_INVALID_ARGUMENTS;
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}
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SPA_FORMAT_FOREACH (format, prop) {
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if ((find = parse_info_find (pinfo, prop->body.key, prop->body.value.type))) {
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memcpy (SPA_MEMBER (info, find->offset, void),
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SPA_POD_BODY (&prop->body.value),
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SPA_POD_BODY_SIZE (&prop->body.value));
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}
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}
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return SPA_RESULT_OK;
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}
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SpaResult
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spa_format_filter (const SpaFormat *format,
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const SpaFormat *filter,
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SpaPODBuilder *result)
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{
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SpaPODFrame f;
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SpaResult res;
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if (format == NULL || result == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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if (filter == NULL) {
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spa_pod_builder_raw (result, format, SPA_POD_SIZE (format), true);
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return SPA_RESULT_OK;
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}
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if (filter->body.media_type.value != format->body.media_type.value ||
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filter->body.media_subtype.value != format->body.media_subtype.value)
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return SPA_RESULT_INVALID_MEDIA_TYPE;
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spa_pod_builder_push_format (result, &f,
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filter->body.media_type.value,
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filter->body.media_subtype.value);
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res = spa_props_filter (result,
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SPA_POD_CONTENTS (SpaFormat, format),
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SPA_POD_CONTENTS_SIZE (SpaFormat, format),
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SPA_POD_CONTENTS (SpaFormat, filter),
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SPA_POD_CONTENTS_SIZE (SpaFormat, filter));
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spa_pod_builder_pop (result, &f);
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return res;
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}
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