mirror of
https://github.com/tuxbox-neutrino/libstb-hal.git
synced 2025-08-26 23:13:16 +02:00
raspi: use decoder implementation from pidvbip
* remove ilclient * use a decoder implementation similar to pidvbip instead, see https://github.com/linuxstb/pidvbip * video is decoded in hardware (videocore) * audio is decoded by libavcodec * add a AVDec wrapper class for both audio and video decoders * very raw, needs more polishing. But decodes audio and video :-) * only tested with h264
This commit is contained in:
Stefan Seyfried
265
raspi/codec.c
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265
raspi/codec.c
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/*
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* this code is originally from
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* pidvbip - tvheadend client for the Raspberry Pi
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* (C) Dave Chapman 2012-2013
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*
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* adaption for libstb-hal
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* (C) Stefan Seyfried 2013
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* codec.c -- audio / video codec queue functions
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*/
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#include "config.h"
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#include <stdio.h>
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#include <pthread.h>
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#include "codec.h"
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void codec_queue_init(struct codec_t* codec)
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{
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codec->queue_head = NULL;
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codec->queue_tail = NULL;
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codec->queue_count = 0;
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codec->is_running = 1;
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codec->PTS = -1;
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pthread_mutex_init(&codec->queue_mutex,NULL);
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pthread_cond_init(&codec->queue_count_cv,NULL);
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pthread_cond_init(&codec->resume_cv,NULL);
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pthread_mutex_init(&codec->PTS_mutex,NULL);
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pthread_mutex_init(&codec->isrunning_mutex,NULL);
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}
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int codec_is_running(struct codec_t* codec)
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{
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int res;
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pthread_mutex_lock(&codec->isrunning_mutex);
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res = codec->is_running;
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pthread_mutex_unlock(&codec->isrunning_mutex);
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return res;
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}
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void codec_flush_queue(struct codec_t* codec)
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{
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/* Empty the queue */
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pthread_mutex_lock(&codec->queue_mutex);
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struct codec_queue_t* p = codec->queue_head;
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while (p) {
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struct codec_queue_t* tmp = p;
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p = p->next;
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codec_queue_free_item(codec,tmp);
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}
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codec->queue_count = 0;
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codec->queue_head = NULL;
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codec->queue_tail = NULL;
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pthread_mutex_unlock(&codec->queue_mutex);
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}
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static void codec_stop0(struct codec_t* codec, int msg)
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{
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struct codec_queue_t* new = malloc(sizeof(struct codec_queue_t));
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if (new == NULL) {
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fprintf(stderr,"FATAL ERROR: out of memory adding to queue\n");
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exit(1);
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}
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pthread_mutex_lock(&codec->queue_mutex);
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pthread_mutex_lock(&codec->isrunning_mutex);
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codec->is_running = 0;
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pthread_mutex_unlock(&codec->isrunning_mutex);
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/* Empty the queue */
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struct codec_queue_t* p = codec->queue_head;
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while (p) {
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struct codec_queue_t* tmp = p;
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p = p->next;
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codec_queue_free_item(codec,tmp);
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}
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new->msgtype = msg;
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new->data = NULL;
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new->next = NULL;
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new->prev = NULL;
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codec->queue_head = new;
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codec->queue_tail = new;
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if (codec->queue_count == 0) {
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pthread_cond_signal(&codec->queue_count_cv);
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}
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codec->queue_count=1;
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codec_set_pts(codec,-1);
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pthread_mutex_unlock(&codec->queue_mutex);
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}
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void codec_stop(struct codec_t* codec)
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{
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codec_stop0(codec, MSG_STOP);
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}
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void codec_new_channel(struct codec_t* codec)
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{
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codec_stop0(codec, MSG_NEW_CHANNEL);
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}
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void codec_send_message(struct codec_t* codec, int m, void* data)
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{
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struct codec_queue_t* new = malloc(sizeof(struct codec_queue_t));
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if (new == NULL) {
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fprintf(stderr,"FATAL ERROR: out of memory adding to queue\n");
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exit(1);
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}
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new->msgtype = m;
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new->data = data;
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pthread_mutex_lock(&codec->queue_mutex);
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/* End to end of queue */
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if (codec->queue_tail == NULL) {
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new->next = NULL;
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new->prev = NULL;
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codec->queue_head = new;
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codec->queue_tail = new;
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pthread_cond_signal(&codec->queue_count_cv);
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} else {
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new->next = NULL;
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new->prev = codec->queue_tail;
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new->prev->next = new;
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codec->queue_tail = new;
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}
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codec->queue_count++;
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pthread_mutex_unlock(&codec->queue_mutex);
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}
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void codec_pause(struct codec_t* codec)
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{
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codec_send_message(codec, MSG_PAUSE, NULL);
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}
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void codec_resume(struct codec_t* codec)
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{
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pthread_cond_signal(&codec->resume_cv);
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}
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void codec_queue_add_item(struct codec_t* codec, struct packet_t* packet, int msgtype)
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{
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if (packet == NULL) {
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fprintf(stderr,"ERROR: Adding NULL packet to queue, skipping\n");
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return;
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}
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struct codec_queue_t* new = malloc(sizeof(struct codec_queue_t));
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if (new == NULL) {
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fprintf(stderr,"FATAL ERROR: out of memory adding to queue\n");
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exit(1);
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}
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new->msgtype = msgtype;
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new->data = packet;
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pthread_mutex_lock(&codec->queue_mutex);
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if (codec->is_running) {
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if (codec->queue_head == NULL) {
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new->next = NULL;
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new->prev = NULL;
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codec->queue_head = new;
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codec->queue_tail = new;
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pthread_cond_signal(&codec->queue_count_cv);
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} else {
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new->next = codec->queue_head;
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new->prev = NULL;
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new->next->prev = new;
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codec->queue_head = new;
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}
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codec->queue_count++;
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} else {
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fprintf(stderr,"Dropping packet - codec is stopped.\n");
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free(packet);
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}
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pthread_mutex_unlock(&codec->queue_mutex);
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}
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void codec_queue_free_item(__attribute__((unused))struct codec_t* codec, struct codec_queue_t* item)
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{
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if (item == NULL)
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return;
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if (item->data) {
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free(item->data->buf);
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free(item->data);
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}
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free(item);
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}
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struct codec_queue_t* codec_queue_get_next_item(struct codec_t* codec)
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{
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struct codec_queue_t* item;
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pthread_mutex_lock(&codec->queue_mutex);
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while (codec->queue_tail == NULL)
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pthread_cond_wait(&codec->queue_count_cv,&codec->queue_mutex);
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item = codec->queue_tail;
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codec->queue_tail = codec->queue_tail->prev;
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if (codec->queue_tail == NULL) {
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codec->queue_head = NULL;
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} else {
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codec->queue_tail->next = NULL;
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}
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codec->queue_count--;
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pthread_mutex_unlock(&codec->queue_mutex);
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return item;
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}
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void codec_set_pts(struct codec_t* codec, int64_t PTS)
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{
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pthread_mutex_lock(&codec->PTS_mutex);
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codec->PTS = PTS;
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pthread_mutex_unlock(&codec->PTS_mutex);
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}
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int64_t codec_get_pts(struct codec_t* codec)
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{
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int64_t PTS;
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pthread_mutex_lock(&codec->PTS_mutex);
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PTS = codec->PTS;
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pthread_mutex_unlock(&codec->PTS_mutex);
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return PTS;
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}
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