diff options
Diffstat (limited to 'libavcodec/cfhd.c')
-rw-r--r-- | libavcodec/cfhd.c | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c new file mode 100644 index 0000000000..e8f859c8aa --- /dev/null +++ b/libavcodec/cfhd.c @@ -0,0 +1,797 @@ +/* + * 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; + + 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, j; + + for (i = 0; i < 4; i++) { + av_freep(&s->plane[i].idwt_buf); + av_freep(&s->plane[i].idwt_tmp); + + for (j = 0; j < 9; j++) + s->plane[i].subband[j] = NULL; + + for (j = 0; j < 8; j++) + s->plane[i].l_h[j] = NULL; + } + s->a_height = 0; + s->a_width = 0; +} + +static int alloc_buffers(AVCodecContext *avctx) +{ + CFHDContext *s = avctx->priv_data; + int i, j, k, ret, planes; + + if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0) + return ret; + avctx->pix_fmt = s->coded_format; + + avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_x_shift, &s->chroma_y_shift); + planes = av_pix_fmt_count_planes(avctx->pix_fmt); + + for (i = 0; i < planes; 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_mallocz_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; + s->a_format = s->coded_format; + + 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, planes, plane, got_buffer = 0; + int16_t *coeff_data; + + s->coded_format = AV_PIX_FMT_YUV422P10; + init_frame_defaults(s); + planes = av_pix_fmt_count_planes(s->coded_format); + + 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 > 4) { + 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 >= planes) { + 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, 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 %d %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"); + 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) + s->coded_format = AV_PIX_FMT_YUV422P10; + else if (data == 3) + s->coded_format = AV_PIX_FMT_GBRP12; + else if (data == 4) + s->coded_format = AV_PIX_FMT_GBRAP12; + else { + avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data); + ret = AVERROR_PATCHWELCOME; + break; + } + planes = av_pix_fmt_count_planes(s->coded_format); + } 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 && + s->coded_format != AV_PIX_FMT_NONE) { + if (s->a_width != s->coded_width || s->a_height != s->coded_height || + s->a_format != s->coded_format) { + free_buffers(avctx); + if ((ret = alloc_buffers(avctx)) < 0) { + free_buffers(avctx); + return ret; + } + } + ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height); + if (ret < 0) + return ret; + frame.f->width = + frame.f->height = 0; + + if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) + return ret; + + s->coded_width = 0; + s->coded_height = 0; + s->coded_format = AV_PIX_FMT_NONE; + 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 (!got_buffer) { + av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n"); + ret = AVERROR(EINVAL); + goto end; + } + + 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 %d 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; + } + + /* Align to mod-4 position to continue reading tags */ + bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR); + + /* 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 %d\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 (!got_buffer) { + av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n"); + ret = AVERROR(EINVAL); + goto end; + } + + if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < expected) { + av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\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->a_format == AV_PIX_FMT_NONE || + s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) { + 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; + } + + planes = av_pix_fmt_count_planes(avctx->pix_fmt); + for (plane = 0; plane < planes && !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 : plane; + 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 (s->bpc == 12) { + 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 | AV_CODEC_CAP_FRAME_THREADS, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, +}; |