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libavcodec/hapdec : add support HapAlphaOnly

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Martin Vignali 2017-09-23 21:50:54 +02:00 committed by Michael Niedermayer
parent 45c15b7490
commit cab71e4e4e
2 changed files with 13 additions and 2 deletions
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1
libavcodec/hap.h
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@ -34,6 +34,7 @@ enum HapTextureFormat {
HAP_FMT_RGBDXT1 = 0x0B,
HAP_FMT_RGBADXT5 = 0x0E,
HAP_FMT_YCOCGDXT5 = 0x0F,
HAP_FMT_RGTC1 = 0x01,
};
enum HapCompressor {

14
libavcodec/hapdec.c
View File

@ -24,7 +24,7 @@
* @file
* Hap decoder
*
* Fourcc: Hap1, Hap5, HapY
* Fourcc: Hap1, Hap5, HapY, HapA, HapM
*
* https://github.com/Vidvox/hap/blob/master/documentation/HapVideoDRAFT.md
*/
@ -163,7 +163,8 @@ static int hap_parse_frame_header(AVCodecContext *avctx)
if ((avctx->codec_tag == MKTAG('H','a','p','1') && (section_type & 0x0F) != HAP_FMT_RGBDXT1) ||
(avctx->codec_tag == MKTAG('H','a','p','5') && (section_type & 0x0F) != HAP_FMT_RGBADXT5) ||
(avctx->codec_tag == MKTAG('H','a','p','Y') && (section_type & 0x0F) != HAP_FMT_YCOCGDXT5)) {
(avctx->codec_tag == MKTAG('H','a','p','Y') && (section_type & 0x0F) != HAP_FMT_YCOCGDXT5) ||
(avctx->codec_tag == MKTAG('H','a','p','A') && (section_type & 0x0F) != HAP_FMT_RGTC1)) {
av_log(avctx, AV_LOG_ERROR,
"Invalid texture format %#04x.\n", section_type & 0x0F);
return AVERROR_INVALIDDATA;
@ -403,6 +404,15 @@ static av_cold int hap_init(AVCodecContext *avctx)
ctx->tex_fun = ctx->dxtc.dxt5ys_block;
avctx->pix_fmt = AV_PIX_FMT_RGB0;
break;
case MKTAG('H','a','p','A'):
texture_name = "RGTC1";
ctx->tex_rat = 8;
ctx->tex_fun = ctx->dxtc.rgtc1u_block;
avctx->pix_fmt = AV_PIX_FMT_RGB0;
break;
case MKTAG('H','a','p','M'):
avpriv_report_missing_feature(avctx, "HapQAlpha");
return AVERROR_PATCHWELCOME;
default:
return AVERROR_DECODER_NOT_FOUND;
}