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Rework formats

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Use a POD for the format body. This allows us to more easily build
and copy the formats.
Remove obsolete code to make video and audio formats.
Use SpaVideo/AudioInfo to keep track of formats. Make functions to parse
the format into the structures.
Update plugins
This commit is contained in:
Wim Taymans 2017-02-24 09:28:18 +01:00
parent 7fc73953cd
commit 16b62de53a
34 changed files with 1096 additions and 1579 deletions
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179
spa/include/spa/format-builder.h Normal file
View file

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/* Simple Plugin API
* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#ifndef __SPA_FORMAT_BUILDER_H__
#define __SPA_FORMAT_BUILDER_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdarg.h>
#include <spa/format.h>
#include <spa/pod-builder.h>
static inline off_t
spa_pod_builder_push_format (SpaPODBuilder *builder,
SpaPODFrame *frame,
uint32_t media_type,
uint32_t media_subtype)
{
SpaFormat f = { media_type, media_subtype, { { 0, 0 }, { 0, 0 } } };
off_t offset;
offset = spa_pod_builder_raw (builder, &f, sizeof(f) - sizeof(SpaPODObject), false);
if (spa_pod_builder_push_object (builder, frame, 0, 0) == -1)
offset = -1;
return offset;
}
static inline void
spa_pod_builder_format_propv (SpaPODBuilder *builder,
uint32_t propid,
va_list args)
{
while (propid != 0) {
int type, n_alternatives = -1;
SpaPODProp *prop = NULL;
SpaPODFrame f;
off_t off;
if ((off = spa_pod_builder_push_prop (builder, &f, propid, SPA_POD_PROP_FLAG_READWRITE)) != -1)
prop = SPA_MEMBER (builder->data, off, SpaPODProp);
type = va_arg (args, uint32_t);
while (n_alternatives != 0) {
switch (type) {
case SPA_POD_TYPE_INVALID:
break;
case SPA_POD_TYPE_BOOL:
spa_pod_builder_bool (builder, va_arg (args, int));
break;
case SPA_POD_TYPE_INT:
spa_pod_builder_int (builder, va_arg (args, int32_t));
break;
case SPA_POD_TYPE_LONG:
spa_pod_builder_long (builder, va_arg (args, int64_t));
break;
case SPA_POD_TYPE_FLOAT:
spa_pod_builder_float (builder, va_arg (args, double));
break;
case SPA_POD_TYPE_DOUBLE:
spa_pod_builder_double (builder, va_arg (args, double));
break;
case SPA_POD_TYPE_STRING:
{
const char *str = va_arg (args, char *);
uint32_t len = va_arg (args, uint32_t);
spa_pod_builder_string (builder, str, len);
break;
}
case SPA_POD_TYPE_RECTANGLE:
{
uint32_t width = va_arg (args, uint32_t), height = va_arg (args, uint32_t);
spa_pod_builder_rectangle (builder, width, height);
break;
}
case SPA_POD_TYPE_FRACTION:
{
uint32_t num = va_arg (args, uint32_t), denom = va_arg (args, uint32_t);
spa_pod_builder_fraction (builder, num, denom);
break;
}
case SPA_POD_TYPE_BITMASK:
break;
case SPA_POD_TYPE_ARRAY:
case SPA_POD_TYPE_STRUCT:
case SPA_POD_TYPE_OBJECT:
case SPA_POD_TYPE_PROP:
break;
}
if (n_alternatives == -1) {
uint32_t flags = va_arg (args, uint32_t);
if (prop)
prop->body.flags = flags;
switch (flags & SPA_POD_PROP_RANGE_MASK) {
case SPA_POD_PROP_RANGE_NONE:
n_alternatives = 0;
break;
case SPA_POD_PROP_RANGE_MIN_MAX:
n_alternatives = 2;
break;
case SPA_POD_PROP_RANGE_STEP:
n_alternatives = 3;
break;
case SPA_POD_PROP_RANGE_ENUM:
case SPA_POD_PROP_RANGE_MASK:
n_alternatives = va_arg (args, int);
break;
}
} else
n_alternatives--;
}
spa_pod_builder_pop (builder, &f);
propid = va_arg (args, uint32_t);
}
}
static inline void
spa_pod_builder_format_prop (SpaPODBuilder *builder,
uint32_t propid, ...)
{
va_list args;
va_start (args, propid);
spa_pod_builder_format_propv (builder, propid, args);
va_end (args);
}
static inline off_t
spa_pod_builder_format (SpaPODBuilder *builder,
uint32_t media_type,
uint32_t media_subtype,
uint32_t propid, ...)
{
SpaPODFrame f;
va_list args;
off_t off;
off = spa_pod_builder_push_format (builder, &f, media_type, media_subtype);
va_start (args, propid);
spa_pod_builder_format_propv (builder, propid, args);
va_end (args);
spa_pod_builder_pop (builder, &f);
return off;
}
SpaResult
spa_format_filter (const SpaFormat *format,
const SpaFormat *filter,
SpaPODBuilder *result);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* __SPA_FORMAT_BUILDER_H__ */