static av_cold int jpg_init(AVCodecContext *avctx, JPGContext *c)
{
int ret;
ret = build_vlc(&c->dc_vlc[0], avpriv_mjpeg_bits_dc_luminance,
avpriv_mjpeg_val_dc, 12, 0);
if (ret)
return ret;
ret = build_vlc(&c->dc_vlc[1], avpriv_mjpeg_bits_dc_chrominance,
avpriv_mjpeg_val_dc, 12, 0);
if (ret)
return ret;
ret = build_vlc(&c->ac_vlc[0], avpriv_mjpeg_bits_ac_luminance,
avpriv_mjpeg_val_ac_luminance, 251, 1);
if (ret)
return ret;
ret = build_vlc(&c->ac_vlc[1], avpriv_mjpeg_bits_ac_chrominance,
avpriv_mjpeg_val_ac_chrominance, 251, 1);
if (ret)
return ret;
ff_blockdsp_init(&c->bdsp, avctx);
ff_idctdsp_init(&c->idsp, avctx);
ff_init_scantable(c->idsp.idct_permutation, &c->scantable,
ff_zigzag_direct);
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
ASV1Context *const a = avctx->priv_data;
const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
int i;
if (avctx->extradata_size < 1) {
av_log(avctx, AV_LOG_WARNING, "No extradata provided\n");
}
ff_asv_common_init(avctx);
ff_blockdsp_init(&a->bdsp, avctx);
ff_idctdsp_init(&a->idsp, avctx);
init_vlcs(a);
ff_init_scantable(a->idsp.idct_permutation, &a->scantable, ff_asv_scantab);
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
if (avctx->extradata_size < 1 || (a->inv_qscale = avctx->extradata[0]) == 0) {
av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
if (avctx->codec_id == AV_CODEC_ID_ASV1)
a->inv_qscale = 6;
else
a->inv_qscale = 10;
}
for (i = 0; i < 64; i++) {
int index = ff_asv_scantab[i];
a->intra_matrix[i] = 64 * scale * ff_mpeg1_default_intra_matrix[index] /
a->inv_qscale;
}
return 0;
}
static av_cold int tqi_decode_init(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
ff_blockdsp_init(&t->bdsp, avctx);
ff_bswapdsp_init(&t->bsdsp);
ff_idctdsp_init(&t->idsp, avctx);
ff_init_scantable_permutation(t->idsp.idct_permutation, FF_IDCT_PERM_NONE);
ff_init_scantable(t->idsp.idct_permutation, &t->intra_scantable, ff_zigzag_direct);
avctx->framerate = (AVRational){ 15, 1 };
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
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;
avctx->time_base = (AVRational){1, 15};
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
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 decode_init(AVCodecContext *avctx)
{
ProresContext *ctx = avctx->priv_data;
uint8_t idct_permutation[64];
avctx->bits_per_raw_sample = 10;
ff_blockdsp_init(&ctx->bdsp, avctx);
ff_proresdsp_init(&ctx->prodsp, avctx);
ff_init_scantable_permutation(idct_permutation,
ctx->prodsp.idct_permutation_type);
permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
JvContext *s = avctx->priv_data;
if (!avctx->width || !avctx->height ||
(avctx->width & 7) || (avctx->height & 7)) {
av_log(avctx, AV_LOG_ERROR, "Invalid video dimensions: %dx%d\n",
avctx->width, avctx->height);
return AVERROR(EINVAL);
}
s->frame = av_frame_alloc();
if (!s->frame)
return AVERROR(ENOMEM);
avctx->pix_fmt = AV_PIX_FMT_PAL8;
ff_blockdsp_init(&s->bdsp, avctx);
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
ProresContext *ctx = avctx->priv_data;
uint8_t idct_permutation[64];
avctx->bits_per_raw_sample = 10;
ff_blockdsp_init(&ctx->bdsp, avctx);
ff_proresdsp_init(&ctx->prodsp, avctx);
ff_init_scantable_permutation(idct_permutation,
ctx->prodsp.idct_permutation_type);
permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
switch (avctx->codec_tag) {
case MKTAG('a','p','c','o'):
avctx->profile = FF_PROFILE_PRORES_PROXY;
break;
case MKTAG('a','p','c','s'):
avctx->profile = FF_PROFILE_PRORES_LT;
break;
case MKTAG('a','p','c','n'):
avctx->profile = FF_PROFILE_PRORES_STANDARD;
break;
case MKTAG('a','p','c','h'):
avctx->profile = FF_PROFILE_PRORES_HQ;
break;
case MKTAG('a','p','4','h'):
avctx->profile = FF_PROFILE_PRORES_4444;
break;
case MKTAG('a','p','4','x'):
avctx->profile = FF_PROFILE_PRORES_XQ;
break;
default:
avctx->profile = FF_PROFILE_UNKNOWN;
av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
}
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
ProresContext *ctx = avctx->priv_data;
uint8_t idct_permutation[64];
avctx->bits_per_raw_sample = 10;
ff_blockdsp_init(&ctx->bdsp, avctx);
ff_proresdsp_init(&ctx->prodsp, avctx);
switch (avctx->codec_tag) {
case MKTAG('a', 'p', 'c', 'h'):
avctx->pix_fmt = PIX_FMT_YUV422P10;
break;
case MKTAG('a', 'p', 'c', 'n'):
avctx->pix_fmt = PIX_FMT_YUV422P10;
break;
case MKTAG('a', 'p', 'c', 's'):
avctx->pix_fmt = PIX_FMT_YUV422P10;
break;
case MKTAG('a', 'p', 'c', 'o'):
avctx->pix_fmt = PIX_FMT_YUV422P10;
break;
case MKTAG('a', 'p', '4', 'h'):
avctx->pix_fmt = PIX_FMT_YUV444P10;
break;
default:
av_log(avctx, AV_LOG_WARNING, "Unknown ProRes FOURCC provided (%08X)\n",
avctx->codec_tag);
}
ff_init_scantable_permutation(idct_permutation,
ctx->prodsp.idct_permutation_type);
permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
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;
}
