renamed AV_codec to toxmedia

1 files changed, 0 insertions, 825 deletions

diff --git a/toxmsi/AV_codec.c b/toxmsi/AV_codec.c
deleted file mode 100644
index 8a50c894..00000000
--- a/toxmsi/AV_codec.c
+++ /dev/null
@@ -1,825 +0,0 @@
-/* AV_codec.c
-//  *
- * Audio and video codec intitialisation, encoding/decoding and playback
- *
- *  Copyright (C) 2013 Tox project All Rights Reserved.
- *
- *  This file is part of Tox.
- *
- *  Tox is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  Tox 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 General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with Tox.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-/*----------------------------------------------------------------------------------*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include <stdio.h>
-#include <math.h>
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-#include <libswscale/swscale.h>
-#include <libavdevice/avdevice.h>
-#include <libavutil/opt.h>
-#include <AL/al.h>
-#include <AL/alc.h>
-#include <SDL/SDL.h>
-#include <SDL/SDL_thread.h>
-#include <pthread.h>
-#include <opus/opus.h>
-
-#include "toxmsi.h"
-#include "toxmsi_message.h"
-#include "../toxrtp/toxrtp_message.h"
-#include "../toxrtp/tests/test_helper.h"
-#include "phone.h"
-#include "AV_codec.h"
-
-SDL_Surface *screen;
-
-int display_received_frame(codec_state *cs, AVFrame *r_video_frame)
-{
-    AVPicture pict;
-    SDL_LockYUVOverlay(cs->video_picture.bmp);
-
-    pict.data[0] = cs->video_picture.bmp->pixels[0];
-    pict.data[1] = cs->video_picture.bmp->pixels[2];
-    pict.data[2] = cs->video_picture.bmp->pixels[1];
-    pict.linesize[0] = cs->video_picture.bmp->pitches[0];
-    pict.linesize[1] = cs->video_picture.bmp->pitches[2];
-    pict.linesize[2] = cs->video_picture.bmp->pitches[1];
-
-    /* Convert the image into YUV format that SDL uses */
-    sws_scale(cs->sws_SDL_r_ctx, (uint8_t const * const *)r_video_frame->data, r_video_frame->linesize, 0,
-              cs->video_decoder_ctx->height, pict.data, pict.linesize );
-
-    SDL_UnlockYUVOverlay(cs->video_picture.bmp);
-    SDL_Rect rect;
-    rect.x = 0;
-    rect.y = 0;
-    rect.w = cs->video_decoder_ctx->width;
-    rect.h = cs->video_decoder_ctx->height;
-    SDL_DisplayYUVOverlay(cs->video_picture.bmp, &rect);
-    return 1;
-}
-
-struct jitter_buffer {
-    rtp_msg_t **queue;
-    uint16_t capacity;
-    uint16_t size;
-    uint16_t front;
-    uint16_t rear;
-    uint8_t queue_ready;
-    uint16_t current_id;
-    uint32_t current_ts;
-    uint8_t id_set;
-};
-
-struct jitter_buffer *create_queue(int capacity)
-{
-    struct jitter_buffer *q;
-    q = (struct jitter_buffer *)calloc(sizeof(struct jitter_buffer),1);
-    q->queue = (rtp_msg_t **)calloc((sizeof(rtp_msg_t) * capacity),1);
-    int i = 0;
-
-    for (i = 0; i < capacity; ++i) {
-        q->queue[i] = NULL;
-    }
-
-    q->size = 0;
-    q->capacity = capacity;
-    q->front = 0;
-    q->rear = -1;
-    q->queue_ready = 0;
-    q->current_id = 0;
-    q->current_ts = 0;
-    q->id_set = 0;
-    return q;
-}
-
-/* returns 1 if 'a' has a higher sequence number than 'b' */
-uint8_t sequence_number_older(uint16_t sn_a, uint16_t sn_b, uint32_t ts_a, uint32_t ts_b)
-{
-    /* should be stable enough */
-    return (sn_a > sn_b || ts_a > ts_b);
-}
-
-/* success is 0 when there is nothing to dequeue, 1 when there's a good packet, 2 when there's a lost packet */
-rtp_msg_t *dequeue(struct jitter_buffer *q, int *success)
-{
-    if (q->size == 0 || q->queue_ready == 0) {
-        q->queue_ready = 0;
-        *success = 0;
-        return NULL;
-    }
-
-    int front = q->front;
-
-    if (q->id_set == 0) {
-        q->current_id = q->queue[front]->_header->_sequence_number;
-        q->current_ts = q->queue[front]->_header->_timestamp;
-        q->id_set = 1;
-    } else {
-        int next_id = q->queue[front]->_header->_sequence_number;
-        int next_ts = q->queue[front]->_header->_timestamp;
-
-        /* if this packet is indeed the expected packet */
-        if (next_id == (q->current_id + 1) % _MAX_SEQU_NUM) {
-            q->current_id = next_id;
-            q->current_ts = next_ts;
-        } else {
-            if (sequence_number_older(next_id, q->current_id, next_ts, q->current_ts)) {
-                printf("nextid: %d current: %d\n", next_id, q->current_id);
-                q->current_id = (q->current_id + 1) % _MAX_SEQU_NUM;
-                *success = 2; /* tell the decoder the packet is lost */
-                return NULL;
-            } else {
-                /* packet too old */
-                printf("packet too old\n");
-                *success = 0;
-                return NULL;
-            }
-        }
-    }
-
-    q->size--;
-    q->front++;
-
-    if (q->front == q->capacity)
-        q->front = 0;
-
-    *success = 1;
-    q->current_id = q->queue[front]->_header->_sequence_number;
-    q->current_ts = q->queue[front]->_header->_timestamp;
-    return q->queue[front];
-}
-
-int empty_queue(struct jitter_buffer *q)
-{
-    while (q->size > 0) {
-        q->size--;
-        /* FIXME: */
-        /* rtp_free_msg(cs->_rtp_video, q->queue[q->front]); */
-        q->front++;
-
-        if (q->front == q->capacity)
-            q->front = 0;
-    }
-
-    q->id_set = 0;
-    q->queue_ready = 0;
-    return 0;
-}
-
-int queue(struct jitter_buffer *q, rtp_msg_t *pk)
-{
-    if (q->size == q->capacity) {
-        printf("buffer full, emptying buffer...\n");
-        empty_queue(q);
-        return 0;
-    }
-
-    if (q->size > 8)
-        q->queue_ready = 1;
-
-    ++q->size;
-    ++q->rear;
-
-    if (q->rear == q->capacity)
-        q->rear = 0;
-
-    q->queue[q->rear] = pk;
-
-    int a;
-    int b;
-    int j;
-    a = q->rear;
-
-    for (j = 0; j < q->size - 1; ++j) {
-        b = a - 1;
-
-        if (b < 0)
-            b += q->capacity;
-
-        if (sequence_number_older(q->queue[b]->_header->_sequence_number, q->queue[a]->_header->_sequence_number,
-                                  q->queue[b]->_header->_timestamp, q->queue[a]->_header->_timestamp)) {
-            rtp_msg_t *temp;
-            temp = q->queue[a];
-            q->queue[a] = q->queue[b];
-            q->queue[b] = temp;
-            printf("had to swap\n");
-        } else {
-            break;
-        }
-
-        a -= 1;
-
-        if (a < 0)
-            a += q->capacity;
-    }
-
-    if (pk)
-        return 1;
-
-    return 0;
-}
-
-int init_receive_audio(codec_state *cs)
-{
-    int err = OPUS_OK;
-    cs->audio_decoder = opus_decoder_create(48000, 1, &err);
-    opus_decoder_init(cs->audio_decoder, 48000, 1);
-    printf("init audio decoder successful\n");
-    return 1;
-}
-
-int init_receive_video(codec_state *cs)
-{
-    cs->video_decoder = avcodec_find_decoder(VIDEO_CODEC);
-
-    if (!cs->video_decoder) {
-        printf("init video_decoder failed\n");
-        return 0;
-    }
-
-    cs->video_decoder_ctx = avcodec_alloc_context3(cs->video_decoder);
-
-    if (!cs->video_decoder_ctx) {
-        printf("init video_decoder_ctx failed\n");
-        return 0;
-    }
-
-    if (avcodec_open2(cs->video_decoder_ctx, cs->video_decoder, NULL) < 0) {
-        printf("opening video decoder failed\n");
-        return 0;
-    }
-
-    printf("init video decoder successful\n");
-    return 1;
-}
-
-int init_send_video(codec_state *cs)
-{
-    cs->video_input_format = av_find_input_format(VIDEO_DRIVER);
-
-    if (avformat_open_input(&cs->video_format_ctx, DEFAULT_WEBCAM, cs->video_input_format, NULL) != 0) {
-        printf("opening video_input_format failed\n");
-        return 0;
-    }
-
-    avformat_find_stream_info(cs->video_format_ctx, NULL);
-    av_dump_format(cs->video_format_ctx, 0, DEFAULT_WEBCAM, 0);
-
-    int i;
-
-    for (i = 0; i < cs->video_format_ctx->nb_streams; ++i) {
-        if (cs->video_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-            cs->video_stream = i;
-            break;
-        }
-    }
-
-    cs->webcam_decoder_ctx = cs->video_format_ctx->streams[cs->video_stream]->codec;
-    cs->webcam_decoder = avcodec_find_decoder(cs->webcam_decoder_ctx->codec_id);
-
-    if (cs->webcam_decoder == NULL) {
-        printf("Unsupported codec\n");
-        return 0;
-    }
-
-    if (cs->webcam_decoder_ctx == NULL) {
-        printf("init webcam_decoder_ctx failed\n");
-        return 0;
-    }
-
-    if (avcodec_open2(cs->webcam_decoder_ctx, cs->webcam_decoder, NULL) < 0) {
-        printf("opening webcam decoder failed\n");
-        return 0;
-    }
-
-    cs->video_encoder = avcodec_find_encoder(VIDEO_CODEC);
-
-    if (!cs->video_encoder) {
-        printf("init video_encoder failed\n");
-        return 0;
-    }
-
-    cs->video_encoder_ctx = avcodec_alloc_context3(cs->video_encoder);
-
-    if (!cs->video_encoder_ctx) {
-        printf("init video_encoder_ctx failed\n");
-        return 0;
-    }
-
-    cs->video_encoder_ctx->bit_rate = VIDEO_BITRATE;
-    cs->video_encoder_ctx->rc_min_rate = cs->video_encoder_ctx->rc_max_rate = cs->video_encoder_ctx->bit_rate;
-    av_opt_set_double(cs->video_encoder_ctx->priv_data, "max-intra-rate", 90, 0);
-    av_opt_set(cs->video_encoder_ctx->priv_data, "quality", "realtime", 0);
-
-    cs->video_encoder_ctx->thread_count = 4;
-    cs->video_encoder_ctx->rc_buffer_aggressivity = 0.95;
-    cs->video_encoder_ctx->rc_buffer_size = VIDEO_BITRATE * 6;
-    cs->video_encoder_ctx->profile = 3;
-    cs->video_encoder_ctx->qmax = 54;
-    cs->video_encoder_ctx->qmin = 4;
-    AVRational myrational = {1, 25};
-    cs->video_encoder_ctx->time_base = myrational;
-    cs->video_encoder_ctx->gop_size = 99999;
-    cs->video_encoder_ctx->pix_fmt = PIX_FMT_YUV420P;
-    cs->video_encoder_ctx->width = cs->webcam_decoder_ctx->width;
-    cs->video_encoder_ctx->height = cs->webcam_decoder_ctx->height;
-
-    if (avcodec_open2(cs->video_encoder_ctx, cs->video_encoder, NULL) < 0) {
-        printf("opening video encoder failed\n");
-        return 0;
-    }
-
-    printf("init video encoder successful\n");
-    return 1;
-}
-
-int init_send_audio(codec_state *cs)
-{
-    cs->support_send_audio = 0;
-
-    const ALchar *pDeviceList = alcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER);
-    int i = 0;
-    const ALchar *device_names[20];
-
-    if (pDeviceList) {
-        printf("\nAvailable Capture Devices are:\n");
-
-        while (*pDeviceList) {
-            device_names[i] = pDeviceList;
-            printf("%d) %s\n", i, device_names[i]);
-            pDeviceList += strlen(pDeviceList) + 1;
-            ++i;
-        }
-    }
-
-    printf("enter capture device number: \n");
-    char dev[2];
-    fgets(dev, sizeof(dev), stdin);
-    cs->audio_capture_device = alcCaptureOpenDevice(device_names[dev[0] - 48], AUDIO_SAMPLE_RATE, AL_FORMAT_MONO16,
-                               AUDIO_FRAME_SIZE * 4);
-
-    if (alcGetError(cs->audio_capture_device) != AL_NO_ERROR) {
-        printf("could not start capture device! %d\n", alcGetError(cs->audio_capture_device));
-        return 0;
-    }
-
-    int err = OPUS_OK;
-    cs->audio_bitrate = AUDIO_BITRATE;
-    cs->audio_encoder = opus_encoder_create(AUDIO_SAMPLE_RATE, 1, OPUS_APPLICATION_VOIP, &err);
-    err = opus_encoder_ctl(cs->audio_encoder, OPUS_SET_BITRATE(cs->audio_bitrate));
-    err = opus_encoder_ctl(cs->audio_encoder, OPUS_SET_COMPLEXITY(10));
-    err = opus_encoder_ctl(cs->audio_encoder, OPUS_SET_SIGNAL(OPUS_SIGNAL_VOICE));
-
-    opus_encoder_init(cs->audio_encoder, AUDIO_SAMPLE_RATE, 1, OPUS_APPLICATION_VOIP);
-
-    int nfo;
-    err = opus_encoder_ctl(cs->audio_encoder, OPUS_GET_LOOKAHEAD(&nfo));
-    /* printf("Encoder lookahead delay : %d\n", nfo); */
-    printf("init audio encoder successful\n");
-
-    return 1;
-}
-
-int init_encoder(codec_state *cs)
-{
-    avdevice_register_all();
-    avcodec_register_all();
-    avdevice_register_all();
-    av_register_all();
-
-    pthread_mutex_init(&cs->rtp_msg_mutex_lock, NULL);
-    pthread_mutex_init(&cs->avcodec_mutex_lock, NULL);
-
-    cs->support_send_video = init_send_video(cs);
-    cs->support_send_audio = init_send_audio(cs);
-
-    cs->send_audio = 1;
-    cs->send_video = 1;
-
-    return 1;
-}
-
-int init_decoder(codec_state *cs)
-{
-    avdevice_register_all();
-    avcodec_register_all();
-    avdevice_register_all();
-    av_register_all();
-
-    cs->receive_video = 0;
-    cs->receive_audio = 0;
-
-    cs->support_receive_video = init_receive_video(cs);
-    cs->support_receive_audio = init_receive_audio(cs);
-
-    cs->receive_audio = 1;
-    cs->receive_video = 1;
-
-    return 1;
-}
-
-int video_encoder_refresh(codec_state *cs, int bps)
-{
-    if (cs->video_encoder_ctx)
-        avcodec_close(cs->video_encoder_ctx);
-
-    cs->video_encoder = avcodec_find_encoder(VIDEO_CODEC);
-
-    if (!cs->video_encoder) {
-        printf("init video_encoder failed\n");
-        return -1;
-    }
-
-    cs->video_encoder_ctx = avcodec_alloc_context3(cs->video_encoder);
-
-    if (!cs->video_encoder_ctx) {
-        printf("init video_encoder_ctx failed\n");
-        return -1;
-    }
-
-    cs->video_encoder_ctx->bit_rate = bps;
-    cs->video_encoder_ctx->rc_min_rate = cs->video_encoder_ctx->rc_max_rate = cs->video_encoder_ctx->bit_rate;
-    av_opt_set_double(cs->video_encoder_ctx->priv_data, "max-intra-rate", 90, 0);
-    av_opt_set(cs->video_encoder_ctx->priv_data, "quality", "realtime", 0);
-
-    cs->video_encoder_ctx->thread_count = 4;
-    cs->video_encoder_ctx->rc_buffer_aggressivity = 0.95;
-    cs->video_encoder_ctx->rc_buffer_size = bps * 6;
-    cs->video_encoder_ctx->profile = 0;
-    cs->video_encoder_ctx->qmax = 54;
-    cs->video_encoder_ctx->qmin = 4;
-    AVRational myrational = {1, 25};
-    cs->video_encoder_ctx->time_base = myrational;
-    cs->video_encoder_ctx->gop_size = 99999;
-    cs->video_encoder_ctx->pix_fmt = PIX_FMT_YUV420P;
-    cs->video_encoder_ctx->width = cs->webcam_decoder_ctx->width;
-    cs->video_encoder_ctx->height = cs->webcam_decoder_ctx->height;
-
-    if (avcodec_open2(cs->video_encoder_ctx, cs->video_encoder, NULL) < 0) {
-        printf("opening video encoder failed\n");
-        return -1;
-    }
-    return 0;
-}
-
-void *encode_video_thread(void *arg)
-{
-    codec_state *cs = (codec_state *)arg;
-    AVPacket pkt1, *packet = &pkt1;
-    int p = 0;
-    int err;
-    int got_packet;
-    rtp_msg_t *s_video_msg;
-    int video_frame_finished;
-    AVFrame *s_video_frame;
-    AVFrame *webcam_frame;
-    s_video_frame = avcodec_alloc_frame();
-    webcam_frame = avcodec_alloc_frame();
-    AVPacket enc_video_packet;
-
-    uint8_t *buffer;
-    int numBytes;
-    /* Determine required buffer size and allocate buffer */
-    numBytes = avpicture_get_size(PIX_FMT_YUV420P, cs->webcam_decoder_ctx->width, cs->webcam_decoder_ctx->height);
-    buffer = (uint8_t *)av_calloc(numBytes * sizeof(uint8_t),1);
-    avpicture_fill((AVPicture *)s_video_frame, buffer, PIX_FMT_YUV420P, cs->webcam_decoder_ctx->width,
-                   cs->webcam_decoder_ctx->height);
-    cs->sws_ctx = sws_getContext(cs->webcam_decoder_ctx->width, cs->webcam_decoder_ctx->height,
-                                 cs->webcam_decoder_ctx->pix_fmt, cs->webcam_decoder_ctx->width, cs->webcam_decoder_ctx->height, PIX_FMT_YUV420P,
-                                 SWS_BILINEAR, NULL, NULL, NULL);
-
-    while (!cs->quit && cs->send_video) {
-
-        if (av_read_frame(cs->video_format_ctx, packet) < 0) {
-            printf("error reading frame\n");
-
-            if (cs->video_format_ctx->pb->error != 0)
-                break;
-
-            continue;
-        }
-
-        if (packet->stream_index == cs->video_stream) {
-            if (avcodec_decode_video2(cs->webcam_decoder_ctx, webcam_frame, &video_frame_finished, packet) < 0) {
-                printf("couldn't decode\n");
-                continue;
-            }
-
-            av_free_packet(packet);
-            sws_scale(cs->sws_ctx, (uint8_t const * const *)webcam_frame->data, webcam_frame->linesize, 0,
-                      cs->webcam_decoder_ctx->height, s_video_frame->data, s_video_frame->linesize);
-            /* create a new I-frame every 60 frames */
-            ++p;
-
-            if (p == 60) {
-
-                s_video_frame->pict_type = AV_PICTURE_TYPE_BI ;
-            } else if (p == 61) {
-                s_video_frame->pict_type = AV_PICTURE_TYPE_I ;
-                p = 0;
-            } else {
-                s_video_frame->pict_type = AV_PICTURE_TYPE_P ;
-            }
-
-            if (video_frame_finished) {
-                err = avcodec_encode_video2(cs->video_encoder_ctx, &enc_video_packet, s_video_frame, &got_packet);
-
-                if (err < 0) {
-                    printf("could not encode video frame\n");
-                    continue;
-                }
-
-                if (!got_packet) {
-                    continue;
-                }
-
-                pthread_mutex_lock(&cs->rtp_msg_mutex_lock);
-                THREADLOCK()
-
-                if (!enc_video_packet.data) fprintf(stderr, "video packet data is NULL\n");
-
-                s_video_msg = rtp_msg_new ( cs->_rtp_video, enc_video_packet.data, enc_video_packet.size ) ;
-
-                if (!s_video_msg) {
-                    printf("invalid message\n");
-                }
-
-                rtp_send_msg ( cs->_rtp_video, s_video_msg, cs->_networking );
-                THREADUNLOCK()
-                pthread_mutex_unlock(&cs->rtp_msg_mutex_lock);
-                av_free_packet(&enc_video_packet);
-            }
-        } else {
-            av_free_packet(packet);
-        }
-    }
-
-    /* clean up codecs */
-    pthread_mutex_lock(&cs->avcodec_mutex_lock);
-    av_free(buffer);
-    av_free(webcam_frame);
-    av_free(s_video_frame);
-    sws_freeContext(cs->sws_ctx);
-    avcodec_close(cs->webcam_decoder_ctx);
-    avcodec_close(cs->video_encoder_ctx);
-    pthread_mutex_unlock(&cs->avcodec_mutex_lock);
-    pthread_exit ( NULL );
-}
-
-void *encode_audio_thread(void *arg)
-{
-    codec_state *cs = (codec_state *)arg;
-    rtp_msg_t *s_audio_msg;
-    unsigned char encoded_data[4096];
-    int encoded_size = 0;
-    int16_t frame[4096];
-    int frame_size = AUDIO_FRAME_SIZE;
-    ALint sample = 0;
-    alcCaptureStart(cs->audio_capture_device);
-
-    while (!cs->quit && cs->send_audio) {
-        alcGetIntegerv(cs->audio_capture_device, ALC_CAPTURE_SAMPLES, (ALCsizei)sizeof(ALint), &sample);
-
-        if (sample >= frame_size) {
-            alcCaptureSamples(cs->audio_capture_device, frame, frame_size);
-            encoded_size = opus_encode(cs->audio_encoder, frame, frame_size, encoded_data, 480);
-
-            if (encoded_size <= 0) {
-                printf("Could not encode audio packet\n");
-            } else {
-                pthread_mutex_lock(&cs->rtp_msg_mutex_lock);
-                THREADLOCK()
-                rtp_set_payload_type(cs->_rtp_audio, 96);
-                s_audio_msg = rtp_msg_new (cs->_rtp_audio, encoded_data, encoded_size) ;
-                rtp_send_msg ( cs->_rtp_audio, s_audio_msg, cs->_networking );
-                pthread_mutex_unlock(&cs->rtp_msg_mutex_lock);
-                THREADUNLOCK()
-            }
-        } else {
-            usleep(1000);
-        }
-    }
-
-    /* clean up codecs */
-    pthread_mutex_lock(&cs->avcodec_mutex_lock);
-    alcCaptureStop(cs->audio_capture_device);
-    alcCaptureCloseDevice(cs->audio_capture_device);
-
-    pthread_mutex_unlock(&cs->avcodec_mutex_lock);
-    pthread_exit ( NULL );
-}
-
-
-int video_decoder_refresh(codec_state *cs, int width, int height)
-{
-    printf("need to refresh\n");
-    screen = SDL_SetVideoMode(width, height, 0, 0);
-
-    if (cs->video_picture.bmp)
-        SDL_FreeYUVOverlay(cs->video_picture.bmp);
-
-    cs->video_picture.bmp = SDL_CreateYUVOverlay(width, height, SDL_YV12_OVERLAY, screen);
-    cs->sws_SDL_r_ctx = sws_getContext(width, height, cs->video_decoder_ctx->pix_fmt, width, height, PIX_FMT_YUV420P,
-                                       SWS_BILINEAR, NULL, NULL, NULL);
-    return 1;
-}
-
-void *decode_video_thread(void *arg)
-{
-    codec_state *cs = (codec_state *)arg;
-    cs->video_stream = 0;
-    rtp_msg_t *r_msg;
-    int dec_frame_finished;
-    AVFrame *r_video_frame;
-    r_video_frame = avcodec_alloc_frame();
-    AVPacket dec_video_packet;
-    av_new_packet (&dec_video_packet, 65536);
-    int width = 0;
-    int height = 0;
-
-    while (!cs->quit && cs->receive_video) {
-        r_msg = rtp_recv_msg ( cs->_rtp_video );
-
-        if (r_msg) {
-            memcpy(dec_video_packet.data, r_msg->_data, r_msg->_length);
-            dec_video_packet.size = r_msg->_length;
-            avcodec_decode_video2(cs->video_decoder_ctx, r_video_frame, &dec_frame_finished, &dec_video_packet);
-
-            if (dec_frame_finished) {
-                if (cs->video_decoder_ctx->width != width || cs->video_decoder_ctx->height != height) {
-                    width = cs->video_decoder_ctx->width;
-                    height = cs->video_decoder_ctx->height;
-                    printf("w: %d h%d \n", width, height);
-                    video_decoder_refresh(cs, width, height);
-                }
-
-                display_received_frame(cs, r_video_frame);
-            } else {
-                /* TODO: request the sender to create a new i-frame immediatly */
-                printf("bad video packet\n");
-            }
-
-            rtp_free_msg(cs->_rtp_video, r_msg);
-        }
-
-        usleep(1000);
-    }
-
-    printf("vend\n");
-    /* clean up codecs */
-    pthread_mutex_lock(&cs->avcodec_mutex_lock);
-    av_free(r_video_frame);
-    avcodec_close(cs->video_decoder_ctx);
-    pthread_mutex_unlock(&cs->avcodec_mutex_lock);
-    pthread_exit ( NULL );
-}
-
-void *decode_audio_thread(void *arg)
-{
-    codec_state *cs = (codec_state *)arg;
-    rtp_msg_t *r_msg;
-
-    int frame_size = AUDIO_FRAME_SIZE;
-    int data_size;
-
-    ALCdevice *dev;
-    ALCcontext *ctx;
-    ALuint source, *buffers;
-    dev = alcOpenDevice(NULL);
-    ctx = alcCreateContext(dev, NULL);
-    alcMakeContextCurrent(ctx);
-    int openal_buffers = 5;
-
-    buffers = calloc(sizeof(ALuint) * openal_buffers,1);
-    alGenBuffers(openal_buffers, buffers);
-    alGenSources((ALuint)1, &source);
-    alSourcei(source, AL_LOOPING, AL_FALSE);
-
-    ALuint buffer;
-    ALint val;
-
-    ALenum error;
-    uint16_t zeros[frame_size];
-    int i;
-
-    for (i = 0; i < frame_size; i++) {
-        zeros[i] = 0;
-    }
-
-    for (i = 0; i < openal_buffers; ++i) {
-        alBufferData(buffers[i], AL_FORMAT_MONO16, zeros, frame_size, 48000);
-    }
-
-    alSourceQueueBuffers(source, openal_buffers, buffers);
-    alSourcePlay(source);
-
-    if (alGetError() != AL_NO_ERROR) {
-        fprintf(stderr, "Error starting audio\n");
-        cs->quit = 1;
-    }
-
-    struct jitter_buffer *j_buf = NULL;
-
-    j_buf = create_queue(20);
-
-    int success = 0;
-
-    int dec_frame_len;
-
-    opus_int16 PCM[frame_size];
-
-    while (!cs->quit && cs->receive_audio) {
-        THREADLOCK()
-        r_msg = rtp_recv_msg ( cs->_rtp_audio );
-
-        if (r_msg) {
-            /* push the packet into the queue */
-            queue(j_buf, r_msg);
-        }
-
-        /* grab a packet from the queue */
-        success = 0;
-        alGetSourcei(source, AL_BUFFERS_PROCESSED, &val);
-
-        if (val > 0)
-            r_msg = dequeue(j_buf, &success);
-
-        if (success > 0) {
-            /* good packet */
-            if (success == 1) {
-                dec_frame_len = opus_decode(cs->audio_decoder, r_msg->_data, r_msg->_length, PCM, frame_size, 0);
-                rtp_free_msg(cs->_rtp_audio, r_msg);
-            }
-
-            /* lost packet  */
-            if (success == 2) {
-                printf("lost packet\n");
-                dec_frame_len = opus_decode(cs->audio_decoder, NULL, 0, PCM, frame_size, 1);
-            }
-
-            if (dec_frame_len > 0) {
-                alGetSourcei(source, AL_BUFFERS_PROCESSED, &val);
-
-                if (val <= 0)
-                    continue;
-
-                alSourceUnqueueBuffers(source, 1, &buffer);
-                data_size = av_samples_get_buffer_size(NULL, 1, dec_frame_len, AV_SAMPLE_FMT_S16, 1);
-                alBufferData(buffer, AL_FORMAT_MONO16, PCM, data_size, 48000);
-                int error = alGetError();
-
-                if (error != AL_NO_ERROR) {
-                    fprintf(stderr, "Error setting buffer %d\n", error);
-                    break;
-                }
-
-                alSourceQueueBuffers(source, 1, &buffer);
-
-                if (alGetError() != AL_NO_ERROR) {
-                    fprintf(stderr, "error: could not buffer audio\n");
-                    break;
-                }
-
-                alGetSourcei(source, AL_SOURCE_STATE, &val);
-
-                if (val != AL_PLAYING)
-                    alSourcePlay(source);
-
-
-            }
-        }
-
-        THREADUNLOCK()
-        usleep(1000);
-    }
-
-    /* clean up codecs */
-    pthread_mutex_lock(&cs->avcodec_mutex_lock);
-
-    /* clean up openal */
-    alDeleteSources(1, &source);
-    alDeleteBuffers(openal_buffers, buffers);
-    alcMakeContextCurrent(NULL);
-    alcDestroyContext(ctx);
-    alcCloseDevice(dev);
-    pthread_mutex_unlock(&cs->avcodec_mutex_lock);
-    pthread_exit ( NULL );
-}