| /* |
| * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com> |
| * |
| * 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. |
| * |
| * 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * CFHD Video Decoder |
| */ |
| |
| #include "libavutil/buffer.h" |
| #include "libavutil/common.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| |
| #include "avcodec.h" |
| #include "internal.h" |
| #include "bytestream.h" |
| #include "thread.h" |
| #include "cfhd.h" |
| |
| #define SUBBAND_COUNT 10 |
| |
| static av_cold int cfhd_decode_init(AVCodecContext *avctx) |
| { |
| CFHDContext *s = avctx->priv_data; |
| |
| avctx->bits_per_raw_sample = 10; |
| s->avctx = avctx; |
| avctx->width = 0; |
| avctx->height = 0; |
| |
| return ff_cfhd_init_vlcs(s); |
| } |
| |
| static void init_plane_defaults(CFHDContext *s) |
| { |
| s->subband_num = 0; |
| s->level = 0; |
| s->subband_num_actual = 0; |
| } |
| |
| static void init_frame_defaults(CFHDContext *s) |
| { |
| s->coded_width = 0; |
| s->coded_height = 0; |
| s->bpc = 10; |
| s->channel_cnt = 4; |
| s->subband_cnt = 10; |
| s->channel_num = 0; |
| s->lowpass_precision = 16; |
| s->quantisation = 1; |
| s->wavelet_depth = 3; |
| s->pshift = 1; |
| s->codebook = 0; |
| init_plane_defaults(s); |
| } |
| |
| /* TODO: merge with VLC tables or use LUT */ |
| static inline int dequant_and_decompand(int level, int quantisation) |
| { |
| int64_t abslevel = abs(level); |
| return (abslevel + ((768 * abslevel * abslevel * abslevel) / (255 * 255 * 255))) * FFSIGN(level) * quantisation; |
| } |
| |
| static inline void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, |
| int16_t *high, ptrdiff_t high_stride, int len, uint8_t clip) |
| { |
| int16_t tmp; |
| |
| int i; |
| for (i = 0; i < len; i++) { |
| if (i == 0) { |
| tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3; |
| output[(2*i+0)*out_stride] = (tmp + high[0*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); |
| |
| tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3; |
| output[(2*i+1)*out_stride] = (tmp - high[0*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); |
| } else if (i == len-1) { |
| tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3; |
| output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); |
| |
| tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3; |
| output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); |
| } else { |
| tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3; |
| output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); |
| |
| tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3; |
| output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1; |
| if (clip) |
| output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); |
| } |
| } |
| } |
| |
| static void horiz_filter(int16_t *output, int16_t *low, int16_t *high, int width) |
| { |
| filter(output, 1, low, 1, high, 1, width, 0); |
| } |
| |
| static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high, int width, uint8_t clip) |
| { |
| filter(output, 1, low, 1, high, 1, width, clip); |
| } |
| |
| static void vert_filter(int16_t *output, int out_stride, int16_t *low, int low_stride, |
| int16_t *high, int high_stride, int len) |
| { |
| filter(output, out_stride, low, low_stride, high, high_stride, len, 0); |
| } |
| |
| static void free_buffers(AVCodecContext *avctx) |
| { |
| CFHDContext *s = avctx->priv_data; |
| int i; |
| |
| for (i = 0; i < 3; i++) { |
| av_freep(&s->plane[i].idwt_buf); |
| av_freep(&s->plane[i].idwt_tmp); |
| } |
| s->a_height = 0; |
| s->a_width = 0; |
| } |
| |
| static int alloc_buffers(AVCodecContext *avctx) |
| { |
| CFHDContext *s = avctx->priv_data; |
| int i, j, k, ret; |
| |
| if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0) |
| return ret; |
| |
| avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_x_shift, &s->chroma_y_shift); |
| |
| for (i = 0; i < 3; i++) { |
| int width = i ? avctx->width >> s->chroma_x_shift : avctx->width; |
| int height = i ? avctx->height >> s->chroma_y_shift : avctx->height; |
| int stride = FFALIGN(width / 8, 8) * 8; |
| int w8, h8, w4, h4, w2, h2; |
| height = FFALIGN(height / 8, 2) * 8; |
| s->plane[i].width = width; |
| s->plane[i].height = height; |
| s->plane[i].stride = stride; |
| |
| w8 = FFALIGN(s->plane[i].width / 8, 8); |
| h8 = FFALIGN(s->plane[i].height / 8, 2); |
| w4 = w8 * 2; |
| h4 = h8 * 2; |
| w2 = w4 * 2; |
| h2 = h4 * 2; |
| |
| s->plane[i].idwt_buf = av_malloc_array(height * stride, sizeof(*s->plane[i].idwt_buf)); |
| s->plane[i].idwt_tmp = av_malloc_array(height * stride, sizeof(*s->plane[i].idwt_tmp)); |
| if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp) { |
| return AVERROR(ENOMEM); |
| } |
| |
| s->plane[i].subband[0] = s->plane[i].idwt_buf; |
| s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8; |
| s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8; |
| s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8; |
| s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4; |
| s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4; |
| s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4; |
| s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2; |
| s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2; |
| s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2; |
| |
| for (j = 0; j < DWT_LEVELS; j++) { |
| for(k = 0; k < 4; k++) { |
| s->plane[i].band[j][k].a_width = w8 << j; |
| s->plane[i].band[j][k].a_height = h8 << j; |
| } |
| } |
| |
| /* ll2 and ll1 commented out because they are done in-place */ |
| s->plane[i].l_h[0] = s->plane[i].idwt_tmp; |
| s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8; |
| //s->plane[i].l_h[2] = ll2; |
| s->plane[i].l_h[3] = s->plane[i].idwt_tmp; |
| s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4; |
| //s->plane[i].l_h[5] = ll1; |
| s->plane[i].l_h[6] = s->plane[i].idwt_tmp; |
| s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2; |
| } |
| |
| s->a_height = s->coded_height; |
| s->a_width = s->coded_width; |
| |
| return 0; |
| } |
| |
| static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, |
| AVPacket *avpkt) |
| { |
| CFHDContext *s = avctx->priv_data; |
| GetByteContext gb; |
| ThreadFrame frame = { .f = data }; |
| AVFrame *pic = data; |
| int ret = 0, i, j, plane, got_buffer = 0; |
| int16_t *coeff_data; |
| |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| init_frame_defaults(s); |
| |
| bytestream2_init(&gb, avpkt->data, avpkt->size); |
| |
| while (bytestream2_get_bytes_left(&gb) > 4) { |
| /* Bit weird but implement the tag parsing as the spec says */ |
| uint16_t tagu = bytestream2_get_be16(&gb); |
| int16_t tag = (int16_t)tagu; |
| int8_t tag8 = (int8_t)(tagu >> 8); |
| uint16_t abstag = abs(tag); |
| int8_t abs_tag8 = abs(tag8); |
| uint16_t data = bytestream2_get_be16(&gb); |
| if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) { |
| av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data); |
| } else if (tag == 20) { |
| av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data); |
| s->coded_width = data; |
| } else if (tag == 21) { |
| av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data); |
| s->coded_height = data; |
| } else if (tag == 101) { |
| av_log(avctx, AV_LOG_DEBUG, "Bits per component: %"PRIu16"\n", data); |
| s->bpc = data; |
| } else if (tag == 12) { |
| av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data); |
| s->channel_cnt = data; |
| if (data != 3) { |
| av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data); |
| ret = AVERROR_PATCHWELCOME; |
| break; |
| } |
| } else if (tag == 14) { |
| av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data); |
| if (data != SUBBAND_COUNT) { |
| av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data); |
| ret = AVERROR_PATCHWELCOME; |
| break; |
| } |
| } else if (tag == 62) { |
| s->channel_num = data; |
| av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data); |
| if (s->channel_num > 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| init_plane_defaults(s); |
| } else if (tag == 48) { |
| if (s->subband_num != 0 && data == 1) // hack |
| s->level++; |
| av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data); |
| s->subband_num = data; |
| if (s->level >= DWT_LEVELS) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid level\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| if (s->subband_num > 3) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 51) { |
| av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data); |
| s->subband_num_actual = data; |
| if (s->subband_num_actual >= 10) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 35) |
| av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data); |
| else if (tag == 53) { |
| s->quantisation = data; |
| av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data); |
| } else if (tag == 109) { |
| s->prescale_shift[0] = (data >> 0) & 0x7; |
| s->prescale_shift[1] = (data >> 3) & 0x7; |
| s->prescale_shift[2] = (data >> 6) & 0x7; |
| av_log(avctx, AV_LOG_DEBUG, "Prescale shift (VC-5): %x\n", data); |
| } else if (tag == 27) { |
| s->plane[s->channel_num].band[0][0].width = data; |
| s->plane[s->channel_num].band[0][0].stride = data; |
| av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data); |
| if (data < 2 || data > s->plane[s->channel_num].band[0][0].a_width) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 28) { |
| s->plane[s->channel_num].band[0][0].height = data; |
| av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data); |
| if (data < 2 || data > s->plane[s->channel_num].band[0][0].height) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 1) |
| av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data); |
| else if (tag == 10) { |
| if (data != 0) { |
| avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16" is unsupported\n", data); |
| ret = AVERROR_PATCHWELCOME; |
| break; |
| } |
| av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data); |
| } else if (abstag >= 0x4000 && abstag <= 0x40ff) { |
| av_log(avctx, AV_LOG_DEBUG, "Small chunk length %"PRIu16" %s\n", data * 4, tag < 0 ? "optional" : "required"); |
| bytestream2_skipu(&gb, data * 4); |
| } else if (tag == 23) { |
| av_log(avctx, AV_LOG_DEBUG, "Skip frame\n"); |
| avpriv_report_missing_feature(avctx, "Skip frame not supported\n"); |
| ret = AVERROR_PATCHWELCOME; |
| break; |
| } else if (tag == 2) { |
| av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data); |
| if (data > bytestream2_get_bytes_left(&gb) / 4) { |
| av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data); |
| ret = AVERROR_INVALIDDATA; |
| break; |
| } |
| for (i = 0; i < data; i++) { |
| uint16_t tag2 = bytestream2_get_be16(&gb); |
| uint16_t val2 = bytestream2_get_be16(&gb); |
| av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2); |
| } |
| } else if (tag == 41) { |
| s->plane[s->channel_num].band[s->level][s->subband_num].width = data; |
| s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8); |
| av_log(avctx, AV_LOG_DEBUG, "Highpass width %i channel %i level %i subband %i\n", data, s->channel_num, s->level, s->subband_num); |
| if (data < 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 42) { |
| s->plane[s->channel_num].band[s->level][s->subband_num].height = data; |
| av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data); |
| if (data < 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 49) { |
| s->plane[s->channel_num].band[s->level][s->subband_num].width = data; |
| s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8); |
| av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data); |
| if (data < 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 50) { |
| s->plane[s->channel_num].band[s->level][s->subband_num].height = data; |
| av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data); |
| if (data < 2) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 71) { |
| s->codebook = data; |
| av_log(avctx, AV_LOG_DEBUG, "Codebook %i\n", s->codebook); |
| } else if (tag == 72) { |
| s->codebook = data; |
| av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook); |
| } else if (tag == 70) { |
| av_log(avctx, AV_LOG_DEBUG, "Subsampling or bit-depth flag? %i\n", data); |
| s->bpc = data; |
| if (!(s->bpc == 10 || s->bpc == 12)) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n"); |
| ret = AVERROR(EINVAL); |
| break; |
| } |
| } else if (tag == 84) { |
| av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data); |
| if (data == 1) |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| else if (data == 3) |
| avctx->pix_fmt = AV_PIX_FMT_GBRP12; |
| else { |
| avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16" is unsupported\n", data); |
| ret = AVERROR_PATCHWELCOME; |
| break; |
| } |
| } else |
| av_log(avctx, AV_LOG_DEBUG, "Unknown tag %i data %x\n", tag, data); |
| |
| /* Some kind of end of header tag */ |
| if (tag == 4 && data == 0x1a4a && s->coded_width && s->coded_height && avctx->pix_fmt != AV_PIX_FMT_NONE) { |
| if (s->a_width != s->coded_width || s->a_height != s->coded_height) { |
| free_buffers(avctx); |
| if ((ret = alloc_buffers(avctx)) < 0) { |
| free_buffers(avctx); |
| return ret; |
| } |
| } |
| |
| if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
| return ret; |
| |
| s->coded_width = 0; |
| s->coded_height = 0; |
| got_buffer = 1; |
| } |
| coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual]; |
| |
| /* Lowpass coefficients */ |
| if (tag == 4 && data == 0xf0f && s->a_width && s->a_height) { |
| int lowpass_height = s->plane[s->channel_num].band[0][0].height; |
| int lowpass_width = s->plane[s->channel_num].band[0][0].width; |
| int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height; |
| int lowpass_a_width = s->plane[s->channel_num].band[0][0].a_width; |
| |
| if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width || |
| lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) { |
| av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %"PRIu16" height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width); |
| for (i = 0; i < lowpass_height; i++) { |
| for (j = 0; j < lowpass_width; j++) |
| coeff_data[j] = bytestream2_get_be16u(&gb); |
| |
| coeff_data += lowpass_width; |
| } |
| |
| /* Copy last line of coefficients if odd height */ |
| if (lowpass_height & 1) { |
| memcpy(&coeff_data[lowpass_height * lowpass_width], |
| &coeff_data[(lowpass_height - 1) * lowpass_width], |
| lowpass_width * sizeof(*coeff_data)); |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %"PRIu16"\n", lowpass_width * lowpass_height); |
| } |
| |
| if (tag == 55 && s->subband_num_actual != 255 && s->a_width && s->a_height) { |
| int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height; |
| int highpass_width = s->plane[s->channel_num].band[s->level][s->subband_num].width; |
| int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width; |
| int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height; |
| int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride; |
| int expected = highpass_height * highpass_stride; |
| int a_expected = highpass_a_height * highpass_a_width; |
| int level, run, coeff; |
| int count = 0, bytes; |
| |
| if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < expected) { |
| av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficents\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Start subband coeffs plane %i level %i codebook %i expected %i\n", s->channel_num, s->level, s->codebook, expected); |
| |
| init_get_bits(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb) * 8); |
| { |
| OPEN_READER(re, &s->gb); |
| if (!s->codebook) { |
| while (1) { |
| UPDATE_CACHE(re, &s->gb); |
| GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc, |
| VLC_BITS, 3, 1); |
| |
| /* escape */ |
| if (level == 64) |
| break; |
| |
| count += run; |
| |
| if (count > expected) |
| break; |
| |
| coeff = dequant_and_decompand(level, s->quantisation); |
| for (i = 0; i < run; i++) |
| *coeff_data++ = coeff; |
| } |
| } else { |
| while (1) { |
| UPDATE_CACHE(re, &s->gb); |
| GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc, |
| VLC_BITS, 3, 1); |
| |
| /* escape */ |
| if (level == 255 && run == 2) |
| break; |
| |
| count += run; |
| |
| if (count > expected) |
| break; |
| |
| coeff = dequant_and_decompand(level, s->quantisation); |
| for (i = 0; i < run; i++) |
| *coeff_data++ = coeff; |
| } |
| } |
| CLOSE_READER(re, &s->gb); |
| } |
| |
| if (count > expected) { |
| av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| bytes = FFALIGN(FF_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4); |
| if (bytes > bytestream2_get_bytes_left(&gb)) { |
| av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } else |
| bytestream2_seek(&gb, bytes, SEEK_CUR); |
| |
| av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected); |
| s->codebook = 0; |
| |
| /* Copy last line of coefficients if odd height */ |
| if (highpass_height & 1) { |
| memcpy(&coeff_data[highpass_height * highpass_stride], |
| &coeff_data[(highpass_height - 1) * highpass_stride], |
| highpass_stride * sizeof(*coeff_data)); |
| } |
| } |
| } |
| |
| if (!s->a_width || !s->a_height || s->coded_width || s->coded_height) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| if (!got_buffer) { |
| av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| for (plane = 0; plane < 3 && !ret; plane++) { |
| /* level 1 */ |
| int lowpass_height = s->plane[plane].band[0][0].height; |
| int lowpass_width = s->plane[plane].band[0][0].width; |
| int highpass_stride = s->plane[plane].band[0][1].stride; |
| int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : 0; |
| int16_t *low, *high, *output, *dst; |
| |
| if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width || |
| !highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride); |
| |
| low = s->plane[plane].subband[0]; |
| high = s->plane[plane].subband[2]; |
| output = s->plane[plane].l_h[0]; |
| for (i = 0; i < lowpass_width; i++) { |
| vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| low = s->plane[plane].subband[1]; |
| high = s->plane[plane].subband[3]; |
| output = s->plane[plane].l_h[1]; |
| |
| for (i = 0; i < lowpass_width; i++) { |
| // note the stride of "low" is highpass_stride |
| vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| low = s->plane[plane].l_h[0]; |
| high = s->plane[plane].l_h[1]; |
| output = s->plane[plane].subband[0]; |
| for (i = 0; i < lowpass_height * 2; i++) { |
| horiz_filter(output, low, high, lowpass_width); |
| low += lowpass_width; |
| high += lowpass_width; |
| output += lowpass_width * 2; |
| } |
| if (avctx->pix_fmt == AV_PIX_FMT_GBRP12) { |
| output = s->plane[plane].subband[0]; |
| for (i = 0; i < lowpass_height * 2; i++) { |
| for (j = 0; j < lowpass_width * 2; j++) |
| output[j] <<= 2; |
| |
| output += lowpass_width * 2; |
| } |
| } |
| |
| /* level 2 */ |
| lowpass_height = s->plane[plane].band[1][1].height; |
| lowpass_width = s->plane[plane].band[1][1].width; |
| highpass_stride = s->plane[plane].band[1][1].stride; |
| |
| if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width || |
| !highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride); |
| |
| low = s->plane[plane].subband[0]; |
| high = s->plane[plane].subband[5]; |
| output = s->plane[plane].l_h[3]; |
| for (i = 0; i < lowpass_width; i++) { |
| vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| low = s->plane[plane].subband[4]; |
| high = s->plane[plane].subband[6]; |
| output = s->plane[plane].l_h[4]; |
| for (i = 0; i < lowpass_width; i++) { |
| vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| low = s->plane[plane].l_h[3]; |
| high = s->plane[plane].l_h[4]; |
| output = s->plane[plane].subband[0]; |
| for (i = 0; i < lowpass_height * 2; i++) { |
| horiz_filter(output, low, high, lowpass_width); |
| low += lowpass_width; |
| high += lowpass_width; |
| output += lowpass_width * 2; |
| } |
| |
| output = s->plane[plane].subband[0]; |
| for (i = 0; i < lowpass_height * 2; i++) { |
| for (j = 0; j < lowpass_width * 2; j++) |
| output[j] <<= 2; |
| |
| output += lowpass_width * 2; |
| } |
| |
| /* level 3 */ |
| lowpass_height = s->plane[plane].band[2][1].height; |
| lowpass_width = s->plane[plane].band[2][1].width; |
| highpass_stride = s->plane[plane].band[2][1].stride; |
| |
| if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width || |
| !highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride); |
| |
| low = s->plane[plane].subband[0]; |
| high = s->plane[plane].subband[8]; |
| output = s->plane[plane].l_h[6]; |
| for (i = 0; i < lowpass_width; i++) { |
| vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| low = s->plane[plane].subband[7]; |
| high = s->plane[plane].subband[9]; |
| output = s->plane[plane].l_h[7]; |
| for (i = 0; i < lowpass_width; i++) { |
| vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height); |
| low++; |
| high++; |
| output++; |
| } |
| |
| dst = (int16_t *)pic->data[act_plane]; |
| low = s->plane[plane].l_h[6]; |
| high = s->plane[plane].l_h[7]; |
| for (i = 0; i < lowpass_height * 2; i++) { |
| horiz_filter_clip(dst, low, high, lowpass_width, s->bpc); |
| low += lowpass_width; |
| high += lowpass_width; |
| dst += pic->linesize[act_plane] / 2; |
| } |
| } |
| |
| |
| end: |
| if (ret < 0) |
| return ret; |
| |
| *got_frame = 1; |
| return avpkt->size; |
| } |
| |
| static av_cold int cfhd_close_decoder(AVCodecContext *avctx) |
| { |
| CFHDContext *s = avctx->priv_data; |
| |
| free_buffers(avctx); |
| |
| if (!avctx->internal->is_copy) { |
| ff_free_vlc(&s->vlc_9); |
| ff_free_vlc(&s->vlc_18); |
| } |
| |
| return 0; |
| } |
| |
| AVCodec ff_cfhd_decoder = { |
| .name = "cfhd", |
| .long_name = NULL_IF_CONFIG_SMALL("Cineform HD"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_CFHD, |
| .priv_data_size = sizeof(CFHDContext), |
| .init = cfhd_decode_init, |
| .close = cfhd_close_decoder, |
| .decode = cfhd_decode, |
| .capabilities = AV_CODEC_CAP_DR1, |
| .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, |
| }; |
