static av_cold int decode_init(AVCodecContext *avctx)
{
MadContext *s = avctx->priv_data;
s->avctx = avctx;
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_blockdsp_init(&s->bdsp, avctx);
ff_bswapdsp_init(&s->bbdsp);
ff_idctdsp_init(&s->idsp, avctx);
ff_init_scantable_permutation(s->idsp.idct_permutation, FF_IDCT_PERM_NONE);
ff_init_scantable(s->idsp.idct_permutation, &s->scantable, ff_zigzag_direct);
ff_mpeg12_init_vlcs();
s->last_frame = av_frame_alloc();
if (!s->last_frame)
return AVERROR(ENOMEM);
return 0;
}
static av_cold int tqi_decode_init(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
MpegEncContext *s = &t->s;
s->avctx = avctx;
if(avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_EA;
dsputil_init(&s->dsp, avctx);
ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
s->qscale = 1;
avctx->time_base = (AVRational)
{
1, 15
};
avctx->pix_fmt = PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
av_cold void ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s,
int flip, int has_alpha)
{
int i;
s->avctx = avctx;
avctx->pix_fmt = has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
ff_dsputil_init(&s->dsp, avctx);
ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
ff_vp56dsp_init(&s->vp56dsp, avctx->codec->id);
ff_init_scantable_permutation(s->dsp.idct_permutation, s->vp3dsp.idct_perm);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable,ff_zigzag_direct);
for (i=0; i<4; i++) {
s->framep[i] = &s->frames[i];
avcodec_get_frame_defaults(&s->frames[i]);
}
s->framep[VP56_FRAME_UNUSED] = s->framep[VP56_FRAME_GOLDEN];
s->framep[VP56_FRAME_UNUSED2] = s->framep[VP56_FRAME_GOLDEN2];
s->edge_emu_buffer_alloc = NULL;
s->above_blocks = NULL;
s->macroblocks = NULL;
s->quantizer = -1;
s->deblock_filtering = 1;
s->golden_frame = 0;
s->filter = NULL;
s->has_alpha = has_alpha;
s->modelp = &s->model;
if (flip) {
s->flip = -1;
s->frbi = 2;
s->srbi = 0;
} else {
s->flip = 1;
s->frbi = 0;
s->srbi = 2;
}
}
static av_cold int tqi_decode_init(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
MpegEncContext *s = &t->s;
s->avctx = avctx;
ff_blockdsp_init(&s->bdsp, avctx);
ff_bswapdsp_init(&t->bsdsp);
ff_idctdsp_init(&s->idsp, avctx);
ff_init_scantable_permutation(s->idsp.idct_permutation, FF_IDCT_PERM_NONE);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
s->qscale = 1;
#ifdef IDE_COMPILE
avctx->time_base.num = 1;
avctx->time_base.den = 15;
#else
avctx->time_base = (AVRational){1, 15};
#endif
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
static int decode_init(AVCodecContext *avctx) {
MscDecoderContext * mscDecoderContext;
MscCodecContext * mscContext;
AVFrame * p;
const int scale = 1;
mscDecoderContext = avctx->priv_data;
mscContext = &mscDecoderContext->mscContext;
init_common(avctx, &mscDecoderContext->mscContext);
ff_init_scantable(mscContext->dsp.idct_permutation, &mscContext->scantable, scantab);
avctx->pix_fmt = PIX_FMT_YUV420P;
if(avctx->extradata_size < 1 || (mscContext->inv_qscale= avctx->extradata[0]) == 0) {
av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
mscContext->inv_qscale = 8;
}
for(int i = 0; i < 64; i++){
int index= scantab[i];
mscContext->intra_matrix[i]= 64 * scale * quant_intra_matrix[index] / mscContext->inv_qscale;
mscContext->non_intra_matrix[i]= 64 * scale * ff_mpeg1_default_non_intra_matrix[index] / mscContext->inv_qscale;
}
// allocate frame
p = avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
return AVERROR(ENOMEM);
}
p->qstride = mscContext->mb_width;
p->qscale_table = av_malloc( p->qstride * mscContext->mb_height);
p->quality = (32 * scale + mscContext->inv_qscale / 2) / mscContext->inv_qscale;
memset(p->qscale_table, p->quality, p->qstride * mscContext->mb_height);
return 0;
}
int BIKPlayer::video_init(int w, int h)
{
int bw, bh, blocks;
int i;
if (!bink_trees[15].table) {
for (i = 0; i < 16; i++) {
const int maxbits = bink_tree_lens[i][15];
bink_trees[i].table = table + i*128;
bink_trees[i].table_allocated = 1 << maxbits;
bink_trees[i].init_vlc(maxbits, 16, bink_tree_lens[i], 1, 1,
bink_tree_bits[i], 1, 1, INIT_VLC_LE);
}
}
memset(&c_pic,0, sizeof(AVFrame));
memset(&c_last,0, sizeof(AVFrame));
if (w<(signed) header.width || h<(signed) header.height) {
//movie dimensions are higher than available screen
return 1;
}
ff_init_scantable(&c_scantable, bink_scan);
bw = (header.width + 7) >> 3;
bh = (header.height + 7) >> 3;
blocks = bw * bh;
for (i = 0; i < BINK_NB_SRC; i++) {
c_bundle[i].data = (uint8_t *) av_malloc(blocks * 64);
//not enough memory
if(!c_bundle[i].data) {
return 2;
}
c_bundle[i].data_end = (uint8_t *) c_bundle[i].data + blocks * 64;
}
return 0;
}
static int dnxhd_init_vlc(DNXHDContext *ctx, int cid)
{
if (!ctx->cid_table) {
int index;
if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
return -1;
}
ctx->cid_table = &ff_dnxhd_cid_table[index];
init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
ctx->cid_table->ac_bits, 1, 1,
ctx->cid_table->ac_codes, 2, 2, 0);
init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, ctx->cid_table->bit_depth+4,
ctx->cid_table->dc_bits, 1, 1,
ctx->cid_table->dc_codes, 1, 1, 0);
init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
ctx->cid_table->run_bits, 1, 1,
ctx->cid_table->run_codes, 2, 2, 0);
ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, ff_zigzag_direct);
}
return 0;
}
static av_cold int speedhq_decode_init(AVCodecContext *avctx)
{
int ret;
static AVOnce init_once = AV_ONCE_INIT;
SHQContext * const s = avctx->priv_data;
s->avctx = avctx;
ret = ff_thread_once(&init_once, speedhq_static_init);
if (ret)
return AVERROR_UNKNOWN;
ff_blockdsp_init(&s->bdsp, avctx);
ff_idctdsp_init(&s->idsp, avctx);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
switch (avctx->codec_tag) {
case MKTAG('S', 'H', 'Q', '0'):
s->subsampling = SHQ_SUBSAMPLING_420;
s->alpha_type = SHQ_NO_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
break;
case MKTAG('S', 'H', 'Q', '1'):
s->subsampling = SHQ_SUBSAMPLING_420;
s->alpha_type = SHQ_RLE_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
break;
case MKTAG('S', 'H', 'Q', '2'):
s->subsampling = SHQ_SUBSAMPLING_422;
s->alpha_type = SHQ_NO_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
break;
case MKTAG('S', 'H', 'Q', '3'):
s->subsampling = SHQ_SUBSAMPLING_422;
s->alpha_type = SHQ_RLE_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
break;
case MKTAG('S', 'H', 'Q', '4'):
s->subsampling = SHQ_SUBSAMPLING_444;
s->alpha_type = SHQ_NO_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
break;
case MKTAG('S', 'H', 'Q', '5'):
s->subsampling = SHQ_SUBSAMPLING_444;
s->alpha_type = SHQ_RLE_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
break;
case MKTAG('S', 'H', 'Q', '7'):
s->subsampling = SHQ_SUBSAMPLING_422;
s->alpha_type = SHQ_DCT_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
break;
case MKTAG('S', 'H', 'Q', '9'):
s->subsampling = SHQ_SUBSAMPLING_444;
s->alpha_type = SHQ_DCT_ALPHA;
avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown NewTek SpeedHQ FOURCC provided (%08X)\n",
avctx->codec_tag);
return AVERROR_INVALIDDATA;
}
/* This matches what NDI's RGB -> Y'CbCr 4:2:2 converter uses. */
avctx->colorspace = AVCOL_SPC_BT470BG;
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
return 0;
}
