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examples: add video upload example
Add an example of a node that makes a video available. Improve buffer reuse in stream. Add more video formats
This commit is contained in:
Wim Taymans
parent
c7333c46cc
commit
db16de85bb
16 changed files with 466 additions and 93 deletions
272
pinos/examples/video-src.c
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272
pinos/examples/video-src.c
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/* Pinos
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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 <stdio.h>
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#include <sys/mman.h>
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#include <spa/include/spa/type-map.h>
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#include <spa/include/spa/format-utils.h>
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#include <spa/include/spa/video/format-utils.h>
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#include <spa/include/spa/format-builder.h>
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#include <spa/include/spa/props.h>
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#include <pinos/client/pinos.h>
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#include <pinos/client/sig.h>
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#include <spa/lib/debug.h>
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typedef struct {
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uint32_t format;
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uint32_t props;
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SpaTypeMediaType media_type;
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SpaTypeMediaSubtype media_subtype;
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SpaTypeFormatVideo format_video;
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SpaTypeVideoFormat video_format;
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} Type;
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static inline void
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init_type (Type *type, SpaTypeMap *map)
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{
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type->format = spa_type_map_get_id (map, SPA_TYPE__Format);
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type->props = spa_type_map_get_id (map, SPA_TYPE__Props);
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spa_type_media_type_map (map, &type->media_type);
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spa_type_media_subtype_map (map, &type->media_subtype);
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spa_type_format_video_map (map, &type->format_video);
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spa_type_video_format_map (map, &type->video_format);
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}
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#define WIDTH 320
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#define HEIGHT 240
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#define BPP 3
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#define STRIDE (BPP * WIDTH)
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typedef struct {
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Type type;
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bool running;
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PinosLoop *loop;
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SpaSource *timer;
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PinosContext *context;
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PinosListener on_state_changed;
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PinosStream *stream;
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PinosListener on_stream_state_changed;
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PinosListener on_stream_format_changed;
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uint8_t params_buffer[1024];
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int counter;
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} Data;
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static void
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on_timeout (SpaLoopUtils *utils,
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SpaSource *source,
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void *userdata)
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{
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Data *data = userdata;
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uint32_t id;
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SpaBuffer *buf;
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int i, j;
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uint8_t *p, *map;
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id = pinos_stream_get_empty_buffer (data->stream);
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if (id == SPA_ID_INVALID)
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return;
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buf = pinos_stream_peek_buffer (data->stream, id);
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if (buf->datas[0].type == SPA_DATA_TYPE_MEMFD) {
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map = mmap (NULL, buf->datas[0].maxsize + buf->datas[0].mapoffset, PROT_READ | PROT_WRITE,
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MAP_SHARED, buf->datas[0].fd, 0);
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p = SPA_MEMBER (map, buf->datas[0].mapoffset, uint8_t);
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}
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else if (buf->datas[0].type == SPA_DATA_TYPE_MEMPTR) {
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map = NULL;
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p = buf->datas[0].data;
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} else
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return;
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for (i = 0; i < HEIGHT; i++) {
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for (j = 0; j < WIDTH * BPP; j++) {
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p[j] = data->counter + j * i;
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}
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p += STRIDE;
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data->counter += 13;
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}
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if (map)
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munmap (map, buf->datas[0].maxsize);
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pinos_stream_send_buffer (data->stream, id);
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}
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static void
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on_stream_state_changed (PinosListener *listener,
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PinosStream *stream)
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{
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Data *data = SPA_CONTAINER_OF (listener, Data, on_stream_state_changed);
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printf ("stream state: \"%s\"\n", pinos_stream_state_as_string (stream->state));
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switch (stream->state) {
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case PINOS_STREAM_STATE_PAUSED:
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pinos_loop_update_timer (data->loop,
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data->timer,
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NULL,
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NULL,
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false);
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break;
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case PINOS_STREAM_STATE_STREAMING:
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{
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struct timespec timeout, interval;
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timeout.tv_sec = 0;
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timeout.tv_nsec = 1;
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interval.tv_sec = 0;
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interval.tv_nsec = 40 * SPA_NSEC_PER_MSEC;
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pinos_loop_update_timer (data->loop,
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data->timer,
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&timeout,
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&interval,
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false);
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break;
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}
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default:
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break;
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}
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}
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#define PROP(f,key,type,...) \
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SPA_POD_PROP (f,key,0,type,1,__VA_ARGS__)
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#define PROP_U_MM(f,key,type,...) \
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SPA_POD_PROP (f,key,SPA_POD_PROP_FLAG_UNSET | \
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SPA_POD_PROP_RANGE_MIN_MAX,type,3,__VA_ARGS__)
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static void
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on_stream_format_changed (PinosListener *listener,
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PinosStream *stream,
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SpaFormat *format)
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{
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Data *data = SPA_CONTAINER_OF (listener, Data, on_stream_format_changed);
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PinosContext *ctx = stream->context;
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SpaPODBuilder b = { NULL };
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SpaPODFrame f[2];
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SpaAllocParam *params[2];
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spa_pod_builder_init (&b, data->params_buffer, sizeof (data->params_buffer));
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spa_pod_builder_object (&b, &f[0], 0, ctx->type.alloc_param_buffers.Buffers,
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PROP (&f[1], ctx->type.alloc_param_buffers.size, SPA_POD_TYPE_INT, STRIDE * HEIGHT),
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PROP (&f[1], ctx->type.alloc_param_buffers.stride, SPA_POD_TYPE_INT, STRIDE),
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PROP_U_MM (&f[1], ctx->type.alloc_param_buffers.buffers, SPA_POD_TYPE_INT, 32, 2, 32),
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PROP (&f[1], ctx->type.alloc_param_buffers.align, SPA_POD_TYPE_INT, 16));
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params[0] = SPA_POD_BUILDER_DEREF (&b, f[0].ref, SpaAllocParam);
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spa_pod_builder_object (&b, &f[0], 0, ctx->type.alloc_param_meta_enable.MetaEnable,
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PROP (&f[1], ctx->type.alloc_param_meta_enable.type, SPA_POD_TYPE_INT, SPA_META_TYPE_HEADER));
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params[1] = SPA_POD_BUILDER_DEREF (&b, f[0].ref, SpaAllocParam);
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pinos_stream_finish_format (stream, SPA_RESULT_OK, params, 2);
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}
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static void
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on_state_changed (PinosListener *listener,
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PinosContext *context)
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{
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Data *data = SPA_CONTAINER_OF (listener, Data, on_state_changed);
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switch (context->state) {
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case PINOS_CONTEXT_STATE_ERROR:
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printf ("context error: %s\n", context->error);
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data->running = false;
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break;
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case PINOS_CONTEXT_STATE_CONNECTED:
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{
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SpaFormat *formats[1];
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uint8_t buffer[1024];
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SpaPODBuilder b = SPA_POD_BUILDER_INIT (buffer, sizeof (buffer));
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SpaPODFrame f[2];
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printf ("context state: \"%s\"\n", pinos_context_state_as_string (context->state));
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data->stream = pinos_stream_new (context, "video-src", NULL);
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spa_pod_builder_format (&b, &f[0], data->type.format,
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data->type.media_type.video, data->type.media_subtype.raw,
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PROP (&f[1], data->type.format_video.format, SPA_POD_TYPE_ID, data->type.video_format.RGB),
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PROP (&f[1], data->type.format_video.size, SPA_POD_TYPE_RECTANGLE, WIDTH, HEIGHT),
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PROP (&f[1], data->type.format_video.framerate, SPA_POD_TYPE_FRACTION, 25, 1));
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formats[0] = SPA_POD_BUILDER_DEREF (&b, f[0].ref, SpaFormat);
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pinos_signal_add (&data->stream->state_changed,
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&data->on_stream_state_changed,
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on_stream_state_changed);
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pinos_signal_add (&data->stream->format_changed,
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&data->on_stream_format_changed,
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on_stream_format_changed);
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pinos_stream_connect (data->stream,
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PINOS_DIRECTION_OUTPUT,
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PINOS_STREAM_MODE_BUFFER,
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NULL,
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PINOS_STREAM_FLAG_NONE,
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1,
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formats);
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break;
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}
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default:
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printf ("context state: \"%s\"\n", pinos_context_state_as_string (context->state));
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break;
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}
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}
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int
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main (int argc, char *argv[])
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{
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Data data = { 0, };
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pinos_init (&argc, &argv);
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data.loop = pinos_loop_new ();
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data.running = true;
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data.context = pinos_context_new (data.loop, "video-src", NULL);
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init_type (&data.type, data.context->type.map);
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data.timer = pinos_loop_add_timer (data.loop, on_timeout, &data);
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pinos_signal_add (&data.context->state_changed,
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&data.on_state_changed,
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on_state_changed);
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pinos_context_connect (data.context);
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pinos_loop_enter (data.loop);
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while (data.running) {
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pinos_loop_iterate (data.loop, -1);
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}
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pinos_loop_leave (data.loop);
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pinos_context_destroy (data.context);
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pinos_loop_destroy (data.loop);
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return 0;
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}
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