mirror of
https://git.ffmpeg.org/ffmpeg.git
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263 lines
9.5 KiB
C
263 lines
9.5 KiB
C
/*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/**
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* Thread message API test
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/frame.h"
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#include "libavutil/threadmessage.h"
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#include "libavutil/thread.h" // not public
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struct sender_data {
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int id;
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pthread_t tid;
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int workload;
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AVThreadMessageQueue *queue;
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};
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/* same as sender_data but shuffled for testing purpose */
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struct receiver_data {
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pthread_t tid;
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int workload;
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int id;
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AVThreadMessageQueue *queue;
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};
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struct message {
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AVFrame *frame;
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// we add some junk in the message to make sure the message size is >
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// sizeof(void*)
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int magic;
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};
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#define MAGIC 0xdeadc0de
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static void free_frame(void *arg)
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{
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struct message *msg = arg;
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av_assert0(msg->magic == MAGIC);
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av_frame_free(&msg->frame);
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}
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static void *sender_thread(void *arg)
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{
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int i, ret = 0;
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struct sender_data *wd = arg;
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av_log(NULL, AV_LOG_INFO, "sender #%d: workload=%d\n", wd->id, wd->workload);
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for (i = 0; i < wd->workload; i++) {
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if (rand() % wd->workload < wd->workload / 10) {
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av_log(NULL, AV_LOG_INFO, "sender #%d: flushing the queue\n", wd->id);
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av_thread_message_flush(wd->queue);
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} else {
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char *val;
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AVDictionary *meta = NULL;
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struct message msg = {
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.magic = MAGIC,
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.frame = av_frame_alloc(),
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};
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if (!msg.frame) {
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ret = AVERROR(ENOMEM);
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break;
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}
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/* we add some metadata to identify the frames */
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val = av_asprintf("frame %d/%d from sender %d",
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i + 1, wd->workload, wd->id);
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if (!val) {
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av_frame_free(&msg.frame);
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ret = AVERROR(ENOMEM);
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break;
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}
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ret = av_dict_set(&meta, "sig", val, AV_DICT_DONT_STRDUP_VAL);
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if (ret < 0) {
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av_frame_free(&msg.frame);
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break;
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}
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msg.frame->metadata = meta;
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/* allocate a real frame in order to simulate "real" work */
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msg.frame->format = AV_PIX_FMT_RGBA;
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msg.frame->width = 320;
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msg.frame->height = 240;
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ret = av_frame_get_buffer(msg.frame, 32);
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if (ret < 0) {
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av_frame_free(&msg.frame);
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break;
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}
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/* push the frame in the common queue */
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av_log(NULL, AV_LOG_INFO, "sender #%d: sending my work (%d/%d frame:%p)\n",
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wd->id, i + 1, wd->workload, msg.frame);
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ret = av_thread_message_queue_send(wd->queue, &msg, 0);
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if (ret < 0) {
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av_frame_free(&msg.frame);
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break;
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}
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}
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}
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av_log(NULL, AV_LOG_INFO, "sender #%d: my work is done here (%s)\n",
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wd->id, av_err2str(ret));
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av_thread_message_queue_set_err_recv(wd->queue, ret < 0 ? ret : AVERROR_EOF);
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return NULL;
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}
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static void *receiver_thread(void *arg)
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{
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int i, ret = 0;
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struct receiver_data *rd = arg;
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for (i = 0; i < rd->workload; i++) {
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if (rand() % rd->workload < rd->workload / 10) {
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av_log(NULL, AV_LOG_INFO, "receiver #%d: flushing the queue, "
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"discarding %d message(s)\n", rd->id,
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av_thread_message_queue_nb_elems(rd->queue));
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av_thread_message_flush(rd->queue);
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} else {
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struct message msg;
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AVDictionary *meta;
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AVDictionaryEntry *e;
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ret = av_thread_message_queue_recv(rd->queue, &msg, 0);
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if (ret < 0)
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break;
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av_assert0(msg.magic == MAGIC);
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meta = msg.frame->metadata;
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e = av_dict_get(meta, "sig", NULL, 0);
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av_log(NULL, AV_LOG_INFO, "got \"%s\" (%p)\n", e->value, msg.frame);
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av_frame_free(&msg.frame);
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}
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}
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av_log(NULL, AV_LOG_INFO, "consumed enough (%d), stop\n", i);
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av_thread_message_queue_set_err_send(rd->queue, ret < 0 ? ret : AVERROR_EOF);
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return NULL;
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}
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static int get_workload(int minv, int maxv)
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{
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return maxv == minv ? maxv : rand() % (maxv - minv) + minv;
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}
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int main(int ac, char **av)
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{
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int i, ret = 0;
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int max_queue_size;
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int nb_senders, sender_min_load, sender_max_load;
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int nb_receivers, receiver_min_load, receiver_max_load;
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struct sender_data *senders;
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struct receiver_data *receivers;
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AVThreadMessageQueue *queue = NULL;
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if (ac != 8) {
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av_log(NULL, AV_LOG_ERROR, "%s <max_queue_size> "
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"<nb_senders> <sender_min_send> <sender_max_send> "
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"<nb_receivers> <receiver_min_recv> <receiver_max_recv>\n", av[0]);
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return 1;
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}
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max_queue_size = atoi(av[1]);
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nb_senders = atoi(av[2]);
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sender_min_load = atoi(av[3]);
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sender_max_load = atoi(av[4]);
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nb_receivers = atoi(av[5]);
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receiver_min_load = atoi(av[6]);
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receiver_max_load = atoi(av[7]);
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if (max_queue_size <= 0 ||
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nb_senders <= 0 || sender_min_load <= 0 || sender_max_load <= 0 ||
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nb_receivers <= 0 || receiver_min_load <= 0 || receiver_max_load <= 0) {
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av_log(NULL, AV_LOG_ERROR, "negative values not allowed\n");
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return 1;
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}
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av_log(NULL, AV_LOG_INFO, "qsize:%d / %d senders sending [%d-%d] / "
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"%d receivers receiving [%d-%d]\n", max_queue_size,
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nb_senders, sender_min_load, sender_max_load,
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nb_receivers, receiver_min_load, receiver_max_load);
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senders = av_mallocz_array(nb_senders, sizeof(*senders));
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receivers = av_mallocz_array(nb_receivers, sizeof(*receivers));
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if (!senders || !receivers) {
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ret = AVERROR(ENOMEM);
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goto end;
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}
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ret = av_thread_message_queue_alloc(&queue, max_queue_size, sizeof(struct message));
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if (ret < 0)
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goto end;
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av_thread_message_queue_set_free_func(queue, free_frame);
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#define SPAWN_THREADS(type) do { \
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for (i = 0; i < nb_##type##s; i++) { \
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struct type##_data *td = &type##s[i]; \
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\
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td->id = i; \
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td->queue = queue; \
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td->workload = get_workload(type##_min_load, type##_max_load); \
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\
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ret = pthread_create(&td->tid, NULL, type##_thread, td); \
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if (ret) { \
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const int err = AVERROR(ret); \
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av_log(NULL, AV_LOG_ERROR, "Unable to start " AV_STRINGIFY(type) \
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" thread: %s\n", av_err2str(err)); \
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goto end; \
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} \
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} \
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} while (0)
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#define WAIT_THREADS(type) do { \
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for (i = 0; i < nb_##type##s; i++) { \
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struct type##_data *td = &type##s[i]; \
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\
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ret = pthread_join(td->tid, NULL); \
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if (ret) { \
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const int err = AVERROR(ret); \
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av_log(NULL, AV_LOG_ERROR, "Unable to join " AV_STRINGIFY(type) \
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" thread: %s\n", av_err2str(err)); \
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goto end; \
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} \
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} \
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} while (0)
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SPAWN_THREADS(receiver);
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SPAWN_THREADS(sender);
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WAIT_THREADS(sender);
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WAIT_THREADS(receiver);
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end:
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av_thread_message_queue_free(&queue);
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av_freep(&senders);
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av_freep(&receivers);
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if (ret < 0 && ret != AVERROR_EOF) {
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av_log(NULL, AV_LOG_ERROR, "Error: %s\n", av_err2str(ret));
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return 1;
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}
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return 0;
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}
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