353 lines
9.9 KiB
C
353 lines
9.9 KiB
C
/* PipeWire
|
|
*
|
|
* Copyright © 2018 Wim Taymans
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
[title]
|
|
Video source using \ref pw_stream.
|
|
[title]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <math.h>
|
|
|
|
#include <spa/param/video/format-utils.h>
|
|
|
|
#include <pipewire/pipewire.h>
|
|
|
|
#define BPP 3
|
|
#define CURSOR_WIDTH 64
|
|
#define CURSOR_HEIGHT 64
|
|
#define CURSOR_BPP 4
|
|
|
|
#define MAX_BUFFERS 64
|
|
|
|
#define M_PI_M2 ( M_PI + M_PI )
|
|
|
|
struct data {
|
|
struct pw_main_loop *loop;
|
|
struct spa_source *timer;
|
|
|
|
struct pw_context *context;
|
|
struct pw_core *core;
|
|
|
|
struct pw_stream *stream;
|
|
struct spa_hook stream_listener;
|
|
|
|
struct spa_video_info_raw format;
|
|
int32_t stride;
|
|
|
|
int counter;
|
|
uint32_t seq;
|
|
|
|
double crop;
|
|
double accumulator;
|
|
int res;
|
|
};
|
|
|
|
static void draw_elipse(uint32_t *dst, int width, int height, uint32_t color)
|
|
{
|
|
int i, j, r1, r2, r12, r22, r122;
|
|
|
|
r1 = width/2;
|
|
r12 = r1 * r1;
|
|
r2 = height/2;
|
|
r22 = r2 * r2;
|
|
r122 = r12 * r22;
|
|
|
|
for (i = -r2; i < r2; i++) {
|
|
for (j = -r1; j < r1; j++) {
|
|
dst[(i + r2)*width+(j+r1)] =
|
|
(i * i * r12 + j * j * r22 <= r122) ? color : 0x00000000;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void on_process(void *userdata)
|
|
{
|
|
struct data *data = userdata;
|
|
struct pw_buffer *b;
|
|
struct spa_buffer *buf;
|
|
uint32_t i, j;
|
|
uint8_t *p;
|
|
struct spa_meta *m;
|
|
struct spa_meta_header *h;
|
|
struct spa_meta_region *mc;
|
|
struct spa_meta_cursor *mcs;
|
|
|
|
if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
|
|
pw_log_warn("out of buffers: %m");
|
|
return;
|
|
}
|
|
|
|
buf = b->buffer;
|
|
if ((p = buf->datas[0].data) == NULL)
|
|
return;
|
|
|
|
if ((h = spa_buffer_find_meta_data(buf, SPA_META_Header, sizeof(*h)))) {
|
|
#if 0
|
|
struct timespec now;
|
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
|
h->pts = SPA_TIMESPEC_TO_NSEC(&now);
|
|
#else
|
|
h->pts = -1;
|
|
#endif
|
|
h->flags = 0;
|
|
h->seq = data->seq++;
|
|
h->dts_offset = 0;
|
|
}
|
|
if ((m = spa_buffer_find_meta(buf, SPA_META_VideoDamage))) {
|
|
struct spa_meta_region *r = spa_meta_first(m);
|
|
|
|
if (spa_meta_check(r, m)) {
|
|
r->region.position = SPA_POINT(0,0);
|
|
r->region.size = data->format.size;
|
|
r++;
|
|
}
|
|
if (spa_meta_check(r, m))
|
|
r->region = SPA_REGION(0,0,0,0);
|
|
}
|
|
if ((mc = spa_buffer_find_meta_data(buf, SPA_META_VideoCrop, sizeof(*mc)))) {
|
|
data->crop = (sin(data->accumulator) + 1.0) * 32.0;
|
|
mc->region.position.x = data->crop;
|
|
mc->region.position.y = data->crop;
|
|
mc->region.size.width = data->format.size.width - data->crop*2;
|
|
mc->region.size.height = data->format.size.height - data->crop*2;
|
|
}
|
|
if ((mcs = spa_buffer_find_meta_data(buf, SPA_META_Cursor, sizeof(*mcs)))) {
|
|
struct spa_meta_bitmap *mb;
|
|
uint32_t *bitmap, color;
|
|
|
|
mcs->id = 1;
|
|
mcs->position.x = (sin(data->accumulator) + 1.0) * 160.0 + 80;
|
|
mcs->position.y = (cos(data->accumulator) + 1.0) * 100.0 + 50;
|
|
mcs->hotspot.x = 0;
|
|
mcs->hotspot.y = 0;
|
|
mcs->bitmap_offset = sizeof(struct spa_meta_cursor);
|
|
|
|
mb = SPA_PTROFF(mcs, mcs->bitmap_offset, struct spa_meta_bitmap);
|
|
mb->format = SPA_VIDEO_FORMAT_ARGB;
|
|
mb->size.width = CURSOR_WIDTH;
|
|
mb->size.height = CURSOR_HEIGHT;
|
|
mb->stride = CURSOR_WIDTH * CURSOR_BPP;
|
|
mb->offset = sizeof(struct spa_meta_bitmap);
|
|
|
|
bitmap = SPA_PTROFF(mb, mb->offset, uint32_t);
|
|
color = (cos(data->accumulator) + 1.0) * (1 << 23);
|
|
color |= 0xff000000;
|
|
|
|
draw_elipse(bitmap, mb->size.width, mb->size.height, color);
|
|
}
|
|
|
|
for (i = 0; i < data->format.size.height; i++) {
|
|
for (j = 0; j < data->format.size.width * BPP; j++) {
|
|
p[j] = data->counter + j * i;
|
|
}
|
|
p += data->stride;
|
|
data->counter += 13;
|
|
}
|
|
|
|
data->accumulator += M_PI_M2 / 50.0;
|
|
if (data->accumulator >= M_PI_M2)
|
|
data->accumulator -= M_PI_M2;
|
|
|
|
buf->datas[0].chunk->offset = 0;
|
|
buf->datas[0].chunk->size = data->format.size.height * data->stride;
|
|
buf->datas[0].chunk->stride = data->stride;
|
|
|
|
pw_stream_queue_buffer(data->stream, b);
|
|
}
|
|
|
|
static void on_timeout(void *userdata, uint64_t expirations)
|
|
{
|
|
struct data *data = userdata;
|
|
pw_log_trace("timeout");
|
|
pw_stream_trigger_process(data->stream);
|
|
}
|
|
|
|
static void on_stream_state_changed(void *_data, enum pw_stream_state old, enum pw_stream_state state,
|
|
const char *error)
|
|
{
|
|
struct data *data = _data;
|
|
|
|
printf("stream state: \"%s\"\n", pw_stream_state_as_string(state));
|
|
|
|
switch (state) {
|
|
case PW_STREAM_STATE_ERROR:
|
|
case PW_STREAM_STATE_UNCONNECTED:
|
|
pw_main_loop_quit(data->loop);
|
|
break;
|
|
|
|
case PW_STREAM_STATE_PAUSED:
|
|
printf("node id: %d\n", pw_stream_get_node_id(data->stream));
|
|
pw_loop_update_timer(pw_main_loop_get_loop(data->loop),
|
|
data->timer, NULL, NULL, false);
|
|
break;
|
|
case PW_STREAM_STATE_STREAMING:
|
|
{
|
|
struct timespec timeout, interval;
|
|
|
|
timeout.tv_sec = 0;
|
|
timeout.tv_nsec = 1;
|
|
interval.tv_sec = 0;
|
|
interval.tv_nsec = 40 * SPA_NSEC_PER_MSEC;
|
|
|
|
if (pw_stream_is_driving(data->stream))
|
|
pw_loop_update_timer(pw_main_loop_get_loop(data->loop),
|
|
data->timer, &timeout, &interval, false);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
|
|
{
|
|
struct data *data = _data;
|
|
struct pw_stream *stream = data->stream;
|
|
uint8_t params_buffer[1024];
|
|
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
|
|
const struct spa_pod *params[5];
|
|
|
|
if (param == NULL || id != SPA_PARAM_Format)
|
|
return;
|
|
|
|
spa_format_video_raw_parse(param, &data->format);
|
|
|
|
data->stride = SPA_ROUND_UP_N(data->format.size.width * BPP, 4);
|
|
|
|
params[0] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers,
|
|
SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(8, 2, MAX_BUFFERS),
|
|
SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1),
|
|
SPA_PARAM_BUFFERS_size, SPA_POD_Int(data->stride * data->format.size.height),
|
|
SPA_PARAM_BUFFERS_stride, SPA_POD_Int(data->stride),
|
|
SPA_PARAM_BUFFERS_align, SPA_POD_Int(16));
|
|
|
|
params[1] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
|
|
SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header)));
|
|
|
|
params[2] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoDamage),
|
|
SPA_PARAM_META_size, SPA_POD_CHOICE_RANGE_Int(
|
|
sizeof(struct spa_meta_region) * 16,
|
|
sizeof(struct spa_meta_region) * 1,
|
|
sizeof(struct spa_meta_region) * 16));
|
|
params[3] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoCrop),
|
|
SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_region)));
|
|
#define CURSOR_META_SIZE(w,h) (sizeof(struct spa_meta_cursor) + \
|
|
sizeof(struct spa_meta_bitmap) + w * h * CURSOR_BPP)
|
|
params[4] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
|
|
SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Cursor),
|
|
SPA_PARAM_META_size, SPA_POD_Int(
|
|
CURSOR_META_SIZE(CURSOR_WIDTH,CURSOR_HEIGHT)));
|
|
|
|
pw_stream_update_params(stream, params, 5);
|
|
}
|
|
|
|
static const struct pw_stream_events stream_events = {
|
|
PW_VERSION_STREAM_EVENTS,
|
|
.process = on_process,
|
|
.state_changed = on_stream_state_changed,
|
|
.param_changed = on_stream_param_changed,
|
|
};
|
|
|
|
static void do_quit(void *userdata, int signal_number)
|
|
{
|
|
struct data *data = userdata;
|
|
pw_main_loop_quit(data->loop);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct data data = { 0, };
|
|
const struct spa_pod *params[1];
|
|
uint8_t buffer[1024];
|
|
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
|
|
|
|
pw_init(&argc, &argv);
|
|
|
|
data.loop = pw_main_loop_new(NULL);
|
|
|
|
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGINT, do_quit, &data);
|
|
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGTERM, do_quit, &data);
|
|
|
|
data.context = pw_context_new(pw_main_loop_get_loop(data.loop), NULL, 0);
|
|
|
|
data.timer = pw_loop_add_timer(pw_main_loop_get_loop(data.loop), on_timeout, &data);
|
|
|
|
data.core = pw_context_connect(data.context, NULL, 0);
|
|
if (data.core == NULL) {
|
|
fprintf(stderr, "can't connect: %m\n");
|
|
data.res = -errno;
|
|
goto cleanup;
|
|
}
|
|
|
|
data.stream = pw_stream_new(data.core, "video-src",
|
|
pw_properties_new(
|
|
PW_KEY_MEDIA_CLASS, "Video/Source",
|
|
NULL));
|
|
|
|
params[0] = spa_pod_builder_add_object(&b,
|
|
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
|
|
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
|
|
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
|
|
SPA_FORMAT_VIDEO_format, SPA_POD_Id(SPA_VIDEO_FORMAT_RGB),
|
|
SPA_FORMAT_VIDEO_size, SPA_POD_CHOICE_RANGE_Rectangle(
|
|
&SPA_RECTANGLE(320, 240),
|
|
&SPA_RECTANGLE(1, 1),
|
|
&SPA_RECTANGLE(4096, 4096)),
|
|
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&SPA_FRACTION(25, 1)));
|
|
|
|
pw_stream_add_listener(data.stream,
|
|
&data.stream_listener,
|
|
&stream_events,
|
|
&data);
|
|
|
|
pw_stream_connect(data.stream,
|
|
PW_DIRECTION_OUTPUT,
|
|
PW_ID_ANY,
|
|
PW_STREAM_FLAG_DRIVER |
|
|
PW_STREAM_FLAG_MAP_BUFFERS,
|
|
params, 1);
|
|
|
|
pw_main_loop_run(data.loop);
|
|
|
|
cleanup:
|
|
pw_context_destroy(data.context);
|
|
pw_main_loop_destroy(data.loop);
|
|
pw_deinit();
|
|
|
|
return data.res;
|
|
}
|