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/**
* @file daala/decode.c Experimental video-codec using Daala -- decoder
*
* Copyright (C) 2010 - 2015 Creytiv.com
*/
#include <string.h>
#include <re.h>
#include <rem.h>
#include <baresip.h>
#include <daala/daaladec.h>
#include "daala.h"
struct viddec_state {
daala_dec_ctx *dec;
bool got_headers;
daala_info di;
daala_comment dc;
daala_setup_info *ds;
struct {
bool valid;
size_t n_frame;
size_t n_header;
size_t n_keyframe;
size_t n_packet;
} stats;
};
static void dump_stats(const struct viddec_state *vds)
{
re_printf("~~~~~ Daala Decoder stats ~~~~~\n");
re_printf("num frames: %zu\n", vds->stats.n_frame);
re_printf("num headers: %zu\n", vds->stats.n_header);
re_printf("key-frames packets: %zu\n", vds->stats.n_keyframe);
re_printf("total packets: %zu\n", vds->stats.n_packet);
}
static void destructor(void *arg)
{
struct viddec_state *vds = arg;
if (vds->stats.valid)
dump_stats(vds);
if (vds->dec)
daala_decode_free(vds->dec);
if (vds->ds)
daala_setup_free(vds->ds);
daala_comment_clear(&vds->dc);
daala_info_clear(&vds->di);
}
int daala_decode_update(struct viddec_state **vdsp, const struct vidcodec *vc,
const char *fmtp)
{
struct viddec_state *vds;
int err = 0;
(void)vc;
(void)fmtp;
if (!vdsp)
return EINVAL;
vds = *vdsp;
if (vds)
return 0;
vds = mem_zalloc(sizeof(*vds), destructor);
if (!vds)
return ENOMEM;
daala_info_init(&vds->di);
daala_comment_init(&vds->dc);
if (err)
mem_deref(vds);
else
*vdsp = vds;
return err;
}
int daala_decode(struct viddec_state *vds, struct vidframe *frame,
bool *intra, bool marker, uint16_t seq, struct mbuf *mb)
{
daala_packet dp;
bool ishdr;
int i, r, err = 0;
(void)seq;
if (!vds || !frame || !mb)
return EINVAL;
*intra = false;
++vds->stats.n_packet;
++vds->stats.valid;
memset(&dp, 0, sizeof(dp));
dp.packet = mbuf_buf(mb);
dp.bytes = mbuf_get_left(mb);
dp.b_o_s = marker;
ishdr = daala_packet_isheader(&dp);
if (ishdr)
++vds->stats.n_header;
else if (daala_packet_iskeyframe(&dp) > 0) {
++vds->stats.n_keyframe;
*intra = true;
}
if (daala_packet_isheader(&dp)) {
r = daala_decode_header_in(&vds->di, &vds->dc, &vds->ds,
&dp);
if (r < 0) {
warning("daala: decoder: decode_header_in failed"
" (ret = %d)\n",
r);
return EPROTO;
}
else if (r == 0) {
vds->got_headers = true;
info("daala: all headers received\n");
vds->dec = daala_decode_create(&vds->di, vds->ds);
if (!vds->dec) {
warning("daala: decoder: alloc failed\n");
return ENOMEM;
}
}
else {
/* waiting for more headers */
}
}
else {
daala_image img;
if (!vds->got_headers) {
warning("daala: decode: still waiting for headers\n");
return EPROTO;
}
r = daala_decode_packet_in(vds->dec, &dp);
if (r < 0) {
warning("daala: decode: packet_in error (%d)\n", r);
return EPROTO;
}
r = daala_decode_img_out(vds->dec, &img);
if (r != 1) {
warning("daala: decode: img_out error (%d)\n", r);
return EPROTO;
}
for (i=0; i<3; i++) {
frame->data[i] = img.planes[i].data;
frame->linesize[i] = img.planes[i].ystride;
}
frame->size.w = img.width;
frame->size.h = img.height;
frame->fmt = VID_FMT_YUV420P;
++vds->stats.n_frame;
}
return err;
}
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