diff options
Diffstat (limited to 'libavcodec/hapdec.c')
-rw-r--r-- | libavcodec/hapdec.c | 163 |
1 files changed, 123 insertions, 40 deletions
diff --git a/libavcodec/hapdec.c b/libavcodec/hapdec.c index 1770718..8fd4aa9 100644 --- a/libavcodec/hapdec.c +++ b/libavcodec/hapdec.c @@ -3,20 +3,22 @@ * Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com> * Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com> * - * This file is part of Libav. + * HapQA and HAPAlphaOnly added by Jokyo Images * - * Libav is free software; you can redistribute it and/or + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -24,7 +26,7 @@ * @file * Hap decoder * - * Fourcc: Hap1, Hap5, HapY + * Fourcc: Hap1, Hap5, HapY, HapA, HapM * * https://github.com/Vidvox/hap/blob/master/documentation/HapVideoDRAFT.md */ @@ -60,7 +62,7 @@ static int parse_section_header(GetByteContext *gbc, int *section_size, *section_size = bytestream2_get_le32(gbc); } - if (*section_size > bytestream2_get_bytes_left(gbc)) + if (*section_size > bytestream2_get_bytes_left(gbc) || *section_size < 0) return AVERROR_INVALIDDATA; else return 0; @@ -157,13 +159,16 @@ static int hap_parse_frame_header(AVCodecContext *avctx) const char *compressorstr; int i, ret; - ret = parse_section_header(gbc, §ion_size, §ion_type); + ret = parse_section_header(gbc, &ctx->texture_section_size, §ion_type); if (ret != 0) return ret; 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) || + ((avctx->codec_tag == MKTAG('H','a','p','M') && (section_type & 0x0F) != HAP_FMT_RGTC1) && + (section_type & 0x0F) != HAP_FMT_YCOCGDXT5)) { av_log(avctx, AV_LOG_ERROR, "Invalid texture format %#04x.\n", section_type & 0x0F); return AVERROR_INVALIDDATA; @@ -176,7 +181,7 @@ static int hap_parse_frame_header(AVCodecContext *avctx) if (ret == 0) { ctx->chunks[0].compressor = section_type & 0xF0; ctx->chunks[0].compressed_offset = 0; - ctx->chunks[0].compressed_size = section_size; + ctx->chunks[0].compressed_size = ctx->texture_section_size; } if (ctx->chunks[0].compressor == HAP_COMP_NONE) { compressorstr = "none"; @@ -265,8 +270,8 @@ static int decompress_chunks_thread(AVCodecContext *avctx, void *arg, return 0; } -static int decompress_texture_thread(AVCodecContext *avctx, void *arg, - int slice, int thread_nb) +static int decompress_texture_thread_internal(AVCodecContext *avctx, void *arg, + int slice, int thread_nb, int texture_num) { HapContext *ctx = avctx->priv_data; AVFrame *frame = arg; @@ -294,58 +299,117 @@ static int decompress_texture_thread(AVCodecContext *avctx, void *arg, uint8_t *p = frame->data[0] + y * frame->linesize[0] * TEXTURE_BLOCK_H; int off = y * w_block; for (x = 0; x < w_block; x++) { - ctx->tex_fun(p + x * 16, frame->linesize[0], - d + (off + x) * ctx->tex_rat); + if (texture_num == 0) { + ctx->tex_fun(p + x * 4 * ctx->uncompress_pix_size, frame->linesize[0], + d + (off + x) * ctx->tex_rat); + } else { + ctx->tex_fun2(p + x * 4 * ctx->uncompress_pix_size, frame->linesize[0], + d + (off + x) * ctx->tex_rat2); + } } } return 0; } +static int decompress_texture_thread(AVCodecContext *avctx, void *arg, + int slice, int thread_nb) +{ + return decompress_texture_thread_internal(avctx, arg, slice, thread_nb, 0); +} + +static int decompress_texture2_thread(AVCodecContext *avctx, void *arg, + int slice, int thread_nb) +{ + return decompress_texture_thread_internal(avctx, arg, slice, thread_nb, 1); +} + static int hap_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { HapContext *ctx = avctx->priv_data; ThreadFrame tframe; - int ret, i; + int ret, i, t; + int tex_size; + int section_size; + enum HapSectionType section_type; + int start_texture_section = 0; + int tex_rat[2] = {0, 0}; bytestream2_init(&ctx->gbc, avpkt->data, avpkt->size); - /* Check for section header */ - ret = hap_parse_frame_header(avctx); - if (ret < 0) - return ret; + tex_rat[0] = ctx->tex_rat; + + /* check for multi texture header */ + if (ctx->texture_count == 2) { + ret = parse_section_header(&ctx->gbc, §ion_size, §ion_type); + if (ret != 0) + return ret; + if ((section_type & 0x0F) != 0x0D) { + av_log(avctx, AV_LOG_ERROR, "Invalid section type in 2 textures mode %#04x.\n", section_type); + return AVERROR_INVALIDDATA; + } + start_texture_section = 4; + tex_rat[1] = ctx->tex_rat2; + } /* Get the output frame ready to receive data */ tframe.f = data; ret = ff_thread_get_buffer(avctx, &tframe, 0); if (ret < 0) return ret; - ff_thread_finish_setup(avctx); - - /* Unpack the DXT texture */ - if (hap_can_use_tex_in_place(ctx)) { - /* Only DXTC texture compression in a contiguous block */ - ctx->tex_data = ctx->gbc.buffer; - } else { - /* Perform the second-stage decompression */ - ret = av_reallocp(&ctx->tex_buf, ctx->tex_size); + + for (t = 0; t < ctx->texture_count; t++) { + bytestream2_seek(&ctx->gbc, start_texture_section, SEEK_SET); + + /* Check for section header */ + ret = hap_parse_frame_header(avctx); if (ret < 0) return ret; - avctx->execute2(avctx, decompress_chunks_thread, NULL, - ctx->chunk_results, ctx->chunk_count); + start_texture_section += ctx->texture_section_size + 4; - for (i = 0; i < ctx->chunk_count; i++) { - if (ctx->chunk_results[i] < 0) - return ctx->chunk_results[i]; + if (avctx->codec->update_thread_context) + ff_thread_finish_setup(avctx); + + /* Unpack the DXT texture */ + if (hap_can_use_tex_in_place(ctx)) { + /* Only DXTC texture compression in a contiguous block */ + ctx->tex_data = ctx->gbc.buffer; + tex_size = FFMIN(ctx->texture_section_size, bytestream2_get_bytes_left(&ctx->gbc)); + } else { + /* Perform the second-stage decompression */ + ret = av_reallocp(&ctx->tex_buf, ctx->tex_size); + if (ret < 0) + return ret; + + avctx->execute2(avctx, decompress_chunks_thread, NULL, + ctx->chunk_results, ctx->chunk_count); + + for (i = 0; i < ctx->chunk_count; i++) { + if (ctx->chunk_results[i] < 0) + return ctx->chunk_results[i]; + } + + ctx->tex_data = ctx->tex_buf; + tex_size = ctx->tex_size; } - ctx->tex_data = ctx->tex_buf; - } + if (tex_size < (avctx->coded_width / TEXTURE_BLOCK_W) + *(avctx->coded_height / TEXTURE_BLOCK_H) + *tex_rat[t]) { + av_log(avctx, AV_LOG_ERROR, "Insufficient data\n"); + return AVERROR_INVALIDDATA; + } - /* Use the decompress function on the texture, one block per thread */ - avctx->execute2(avctx, decompress_texture_thread, tframe.f, NULL, ctx->slice_count); + /* Use the decompress function on the texture, one block per thread */ + if (t == 0){ + avctx->execute2(avctx, decompress_texture_thread, tframe.f, NULL, ctx->slice_count); + } else{ + tframe.f = data; + avctx->execute2(avctx, decompress_texture2_thread, tframe.f, NULL, ctx->slice_count); + } + } /* Frame is ready to be output */ tframe.f->pict_type = AV_PICTURE_TYPE_I; @@ -371,26 +435,45 @@ static av_cold int hap_init(AVCodecContext *avctx) avctx->coded_width = FFALIGN(avctx->width, TEXTURE_BLOCK_W); avctx->coded_height = FFALIGN(avctx->height, TEXTURE_BLOCK_H); - /* Technically only one mode has alpha, but 32 bits are easier to handle */ - avctx->pix_fmt = AV_PIX_FMT_RGBA; - ff_texturedsp_init(&ctx->dxtc); + ctx->texture_count = 1; + ctx->uncompress_pix_size = 4; + switch (avctx->codec_tag) { case MKTAG('H','a','p','1'): texture_name = "DXT1"; ctx->tex_rat = 8; ctx->tex_fun = ctx->dxtc.dxt1_block; + avctx->pix_fmt = AV_PIX_FMT_RGB0; break; case MKTAG('H','a','p','5'): texture_name = "DXT5"; ctx->tex_rat = 16; ctx->tex_fun = ctx->dxtc.dxt5_block; + avctx->pix_fmt = AV_PIX_FMT_RGBA; break; case MKTAG('H','a','p','Y'): texture_name = "DXT5-YCoCg-scaled"; ctx->tex_rat = 16; 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_gray_block; + avctx->pix_fmt = AV_PIX_FMT_GRAY8; + ctx->uncompress_pix_size = 1; + break; + case MKTAG('H','a','p','M'): + texture_name = "DXT5-YCoCg-scaled / RGTC1"; + ctx->tex_rat = 16; + ctx->tex_rat2 = 8; + ctx->tex_fun = ctx->dxtc.dxt5ys_block; + ctx->tex_fun2 = ctx->dxtc.rgtc1u_alpha_block; + avctx->pix_fmt = AV_PIX_FMT_RGBA; + ctx->texture_count = 2; break; default: return AVERROR_DECODER_NOT_FOUND; @@ -415,7 +498,7 @@ static av_cold int hap_close(AVCodecContext *avctx) AVCodec ff_hap_decoder = { .name = "hap", - .long_name = NULL_IF_CONFIG_SMALL("Vidvox Hap decoder"), + .long_name = NULL_IF_CONFIG_SMALL("Vidvox Hap"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_HAP, .init = hap_init, |