From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/libavcodec/imgconvert.c | 665 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 665 insertions(+) create mode 100644 ffmpeg/libavcodec/imgconvert.c (limited to 'ffmpeg/libavcodec/imgconvert.c') diff --git a/ffmpeg/libavcodec/imgconvert.c b/ffmpeg/libavcodec/imgconvert.c new file mode 100644 index 0000000..cf3c967 --- /dev/null +++ b/ffmpeg/libavcodec/imgconvert.c @@ -0,0 +1,665 @@ +/* + * Misc image conversion routines + * Copyright (c) 2001, 2002, 2003 Fabrice Bellard + * + * 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 + * misc image conversion routines + */ + +/* TODO: + * - write 'ffimg' program to test all the image related stuff + * - move all api to slice based system + * - integrate deinterlacing, postprocessing and scaling in the conversion process + */ + +#include "avcodec.h" +#include "dsputil.h" +#include "imgconvert.h" +#include "internal.h" +#include "libavutil/avassert.h" +#include "libavutil/colorspace.h" +#include "libavutil/common.h" +#include "libavutil/pixdesc.h" +#include "libavutil/imgutils.h" + +#if HAVE_MMX_EXTERNAL +#include "x86/dsputil_mmx.h" +#endif + +#define FF_COLOR_NA -1 +#define FF_COLOR_RGB 0 /**< RGB color space */ +#define FF_COLOR_GRAY 1 /**< gray color space */ +#define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */ +#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */ + +#if HAVE_MMX_EXTERNAL +#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx +#define deinterlace_line ff_deinterlace_line_mmx +#else +#define deinterlace_line_inplace deinterlace_line_inplace_c +#define deinterlace_line deinterlace_line_c +#endif + +#define pixdesc_has_alpha(pixdesc) \ + ((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & PIX_FMT_PAL) + + +void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + av_assert0(desc); + *h_shift = desc->log2_chroma_w; + *v_shift = desc->log2_chroma_h; +} + +static int get_color_type(const AVPixFmtDescriptor *desc) { + if(desc->nb_components == 1 || desc->nb_components == 2) + return FF_COLOR_GRAY; + + if(desc->name && !strncmp(desc->name, "yuvj", 4)) + return FF_COLOR_YUV_JPEG; + + if(desc->flags & PIX_FMT_RGB) + return FF_COLOR_RGB; + + if(desc->nb_components == 0) + return FF_COLOR_NA; + + return FF_COLOR_YUV; +} + +static int get_pix_fmt_depth(int *min, int *max, enum AVPixelFormat pix_fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + int i; + + if (!desc || !desc->nb_components) { + *min = *max = 0; + return AVERROR(EINVAL); + } + + *min = INT_MAX, *max = -INT_MAX; + for (i = 0; i < desc->nb_components; i++) { + *min = FFMIN(desc->comp[i].depth_minus1+1, *min); + *max = FFMAX(desc->comp[i].depth_minus1+1, *max); + } + return 0; +} + +static int get_pix_fmt_score(enum AVPixelFormat dst_pix_fmt, + enum AVPixelFormat src_pix_fmt, + unsigned *lossp, unsigned consider) +{ + const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt); + const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt); + int src_color, dst_color; + int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth; + int ret, loss, i, nb_components; + int score = INT_MAX; + + if (dst_pix_fmt >= AV_PIX_FMT_NB || dst_pix_fmt <= AV_PIX_FMT_NONE) + return ~0; + + /* compute loss */ + *lossp = loss = 0; + + if (dst_pix_fmt == src_pix_fmt) + return INT_MAX; + + if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0) + return ret; + if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0) + return ret; + + src_color = get_color_type(src_desc); + dst_color = get_color_type(dst_desc); + nb_components = FFMIN(src_desc->nb_components, dst_desc->nb_components); + + for (i = 0; i < nb_components; i++) + if (src_desc->comp[i].depth_minus1 > dst_desc->comp[i].depth_minus1 && (consider & FF_LOSS_DEPTH)) { + loss |= FF_LOSS_DEPTH; + score -= 65536 >> dst_desc->comp[i].depth_minus1; + } + + if (consider & FF_LOSS_RESOLUTION) { + if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w) { + loss |= FF_LOSS_RESOLUTION; + score -= 256 << dst_desc->log2_chroma_w; + } + if (dst_desc->log2_chroma_h > src_desc->log2_chroma_h) { + loss |= FF_LOSS_RESOLUTION; + score -= 256 << dst_desc->log2_chroma_h; + } + // dont favor 422 over 420 if downsampling is needed, because 420 has much better support on the decoder side + if (dst_desc->log2_chroma_w == 1 && src_desc->log2_chroma_w == 0 && + dst_desc->log2_chroma_h == 1 && src_desc->log2_chroma_h == 0 ) { + score += 512; + } + } + + if(consider & FF_LOSS_COLORSPACE) + switch(dst_color) { + case FF_COLOR_RGB: + if (src_color != FF_COLOR_RGB && + src_color != FF_COLOR_GRAY) + loss |= FF_LOSS_COLORSPACE; + break; + case FF_COLOR_GRAY: + if (src_color != FF_COLOR_GRAY) + loss |= FF_LOSS_COLORSPACE; + break; + case FF_COLOR_YUV: + if (src_color != FF_COLOR_YUV) + loss |= FF_LOSS_COLORSPACE; + break; + case FF_COLOR_YUV_JPEG: + if (src_color != FF_COLOR_YUV_JPEG && + src_color != FF_COLOR_YUV && + src_color != FF_COLOR_GRAY) + loss |= FF_LOSS_COLORSPACE; + break; + default: + /* fail safe test */ + if (src_color != dst_color) + loss |= FF_LOSS_COLORSPACE; + break; + } + if(loss & FF_LOSS_COLORSPACE) + score -= (nb_components * 65536) >> FFMIN(dst_desc->comp[0].depth_minus1, src_desc->comp[0].depth_minus1); + + if (dst_color == FF_COLOR_GRAY && + src_color != FF_COLOR_GRAY && (consider & FF_LOSS_CHROMA)) { + loss |= FF_LOSS_CHROMA; + score -= 2 * 65536; + } + if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && (consider & FF_LOSS_ALPHA))) { + loss |= FF_LOSS_ALPHA; + score -= 65536; + } + if (dst_pix_fmt == AV_PIX_FMT_PAL8 && (consider & FF_LOSS_COLORQUANT) && + (src_pix_fmt != AV_PIX_FMT_PAL8 && (src_color != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && (consider & FF_LOSS_ALPHA))))) { + loss |= FF_LOSS_COLORQUANT; + score -= 65536; + } + + *lossp = loss; + return score; +} + +int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, + enum AVPixelFormat src_pix_fmt, + int has_alpha) +{ + int loss; + int ret = get_pix_fmt_score(dst_pix_fmt, src_pix_fmt, &loss, has_alpha ? ~0 : ~FF_LOSS_ALPHA); + if (ret < 0) + return ret; + return loss; +} + +enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, + enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr) +{ + enum AVPixelFormat dst_pix_fmt; + int loss1, loss2, loss_mask; + const AVPixFmtDescriptor *desc1 = av_pix_fmt_desc_get(dst_pix_fmt1); + const AVPixFmtDescriptor *desc2 = av_pix_fmt_desc_get(dst_pix_fmt2); + int score1, score2; + + loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */ + if(!has_alpha) + loss_mask &= ~FF_LOSS_ALPHA; + + dst_pix_fmt = AV_PIX_FMT_NONE; + score1 = get_pix_fmt_score(dst_pix_fmt1, src_pix_fmt, &loss1, loss_mask); + score2 = get_pix_fmt_score(dst_pix_fmt2, src_pix_fmt, &loss2, loss_mask); + + if (score1 == score2) { + if(av_get_padded_bits_per_pixel(desc2) != av_get_padded_bits_per_pixel(desc1)) { + dst_pix_fmt = av_get_padded_bits_per_pixel(desc2) < av_get_padded_bits_per_pixel(desc1) ? dst_pix_fmt2 : dst_pix_fmt1; + } else { + dst_pix_fmt = desc2->nb_components < desc1->nb_components ? dst_pix_fmt2 : dst_pix_fmt1; + } + } else { + dst_pix_fmt = score1 < score2 ? dst_pix_fmt2 : dst_pix_fmt1; + } + + if (loss_ptr) + *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha); + return dst_pix_fmt; +} + +#if AV_HAVE_INCOMPATIBLE_FORK_ABI +enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list, + enum AVPixelFormat src_pix_fmt, + int has_alpha, int *loss_ptr){ + return avcodec_find_best_pix_fmt_of_list(pix_fmt_list, src_pix_fmt, has_alpha, loss_ptr); +} +#else +enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, + enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr) +{ + return avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr); +} +#endif + +enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(enum AVPixelFormat *pix_fmt_list, + enum AVPixelFormat src_pix_fmt, + int has_alpha, int *loss_ptr){ + int i; + + enum AVPixelFormat best = AV_PIX_FMT_NONE; + + for(i=0; pix_fmt_list[i] != AV_PIX_FMT_NONE; i++) + best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr); + + return best; +} + +/* 2x2 -> 1x1 */ +void ff_shrink22(uint8_t *dst, int dst_wrap, + const uint8_t *src, int src_wrap, + int width, int height) +{ + int w; + const uint8_t *s1, *s2; + uint8_t *d; + + for(;height > 0; height--) { + s1 = src; + s2 = s1 + src_wrap; + d = dst; + for(w = width;w >= 4; w-=4) { + d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; + d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2; + d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2; + d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2; + s1 += 8; + s2 += 8; + d += 4; + } + for(;w > 0; w--) { + d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; + s1 += 2; + s2 += 2; + d++; + } + src += 2 * src_wrap; + dst += dst_wrap; + } +} + +/* 4x4 -> 1x1 */ +void ff_shrink44(uint8_t *dst, int dst_wrap, + const uint8_t *src, int src_wrap, + int width, int height) +{ + int w; + const uint8_t *s1, *s2, *s3, *s4; + uint8_t *d; + + for(;height > 0; height--) { + s1 = src; + s2 = s1 + src_wrap; + s3 = s2 + src_wrap; + s4 = s3 + src_wrap; + d = dst; + for(w = width;w > 0; w--) { + d[0] = (s1[0] + s1[1] + s1[2] + s1[3] + + s2[0] + s2[1] + s2[2] + s2[3] + + s3[0] + s3[1] + s3[2] + s3[3] + + s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4; + s1 += 4; + s2 += 4; + s3 += 4; + s4 += 4; + d++; + } + src += 4 * src_wrap; + dst += dst_wrap; + } +} + +/* 8x8 -> 1x1 */ +void ff_shrink88(uint8_t *dst, int dst_wrap, + const uint8_t *src, int src_wrap, + int width, int height) +{ + int w, i; + + for(;height > 0; height--) { + for(w = width;w > 0; w--) { + int tmp=0; + for(i=0; i<8; i++){ + tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7]; + src += src_wrap; + } + *(dst++) = (tmp + 32)>>6; + src += 8 - 8*src_wrap; + } + src += 8*src_wrap - 8*width; + dst += dst_wrap - width; + } +} + +/* return true if yuv planar */ +static inline int is_yuv_planar(const AVPixFmtDescriptor *desc) +{ + int i; + int planes[4] = { 0 }; + + if ( desc->flags & PIX_FMT_RGB + || !(desc->flags & PIX_FMT_PLANAR)) + return 0; + + /* set the used planes */ + for (i = 0; i < desc->nb_components; i++) + planes[desc->comp[i].plane] = 1; + + /* if there is an unused plane, the format is not planar */ + for (i = 0; i < desc->nb_components; i++) + if (!planes[i]) + return 0; + return 1; +} + +int av_picture_crop(AVPicture *dst, const AVPicture *src, + enum AVPixelFormat pix_fmt, int top_band, int left_band) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + int y_shift; + int x_shift; + + if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB) + return -1; + + y_shift = desc->log2_chroma_h; + x_shift = desc->log2_chroma_w; + + if (is_yuv_planar(desc)) { + dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band; + dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift); + dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift); + } else{ + if(top_band % (1<data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band; + } + + dst->linesize[0] = src->linesize[0]; + dst->linesize[1] = src->linesize[1]; + dst->linesize[2] = src->linesize[2]; + return 0; +} + +int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, + enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, + int *color) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + uint8_t *optr; + int y_shift; + int x_shift; + int yheight; + int i, y; + + if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB || + !is_yuv_planar(desc)) return -1; + + for (i = 0; i < 3; i++) { + x_shift = i ? desc->log2_chroma_w : 0; + y_shift = i ? desc->log2_chroma_h : 0; + + if (padtop || padleft) { + memset(dst->data[i], color[i], + dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift)); + } + + if (padleft || padright) { + optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + + (dst->linesize[i] - (padright >> x_shift)); + yheight = (height - 1 - (padtop + padbottom)) >> y_shift; + for (y = 0; y < yheight; y++) { + memset(optr, color[i], (padleft + padright) >> x_shift); + optr += dst->linesize[i]; + } + } + + if (src) { /* first line */ + uint8_t *iptr = src->data[i]; + optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + + (padleft >> x_shift); + memcpy(optr, iptr, (width - padleft - padright) >> x_shift); + iptr += src->linesize[i]; + optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + + (dst->linesize[i] - (padright >> x_shift)); + yheight = (height - 1 - (padtop + padbottom)) >> y_shift; + for (y = 0; y < yheight; y++) { + memset(optr, color[i], (padleft + padright) >> x_shift); + memcpy(optr + ((padleft + padright) >> x_shift), iptr, + (width - padleft - padright) >> x_shift); + iptr += src->linesize[i]; + optr += dst->linesize[i]; + } + } + + if (padbottom || padright) { + optr = dst->data[i] + dst->linesize[i] * + ((height - padbottom) >> y_shift) - (padright >> x_shift); + memset(optr, color[i],dst->linesize[i] * + (padbottom >> y_shift) + (padright >> x_shift)); + } + } + return 0; +} + +#if FF_API_DEINTERLACE + +#if !HAVE_MMX_EXTERNAL +/* filter parameters: [-1 4 2 4 -1] // 8 */ +static void deinterlace_line_c(uint8_t *dst, + const uint8_t *lum_m4, const uint8_t *lum_m3, + const uint8_t *lum_m2, const uint8_t *lum_m1, + const uint8_t *lum, + int size) +{ + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + int sum; + + for(;size > 0;size--) { + sum = -lum_m4[0]; + sum += lum_m3[0] << 2; + sum += lum_m2[0] << 1; + sum += lum_m1[0] << 2; + sum += -lum[0]; + dst[0] = cm[(sum + 4) >> 3]; + lum_m4++; + lum_m3++; + lum_m2++; + lum_m1++; + lum++; + dst++; + } +} + +static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3, + uint8_t *lum_m2, uint8_t *lum_m1, + uint8_t *lum, int size) +{ + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + int sum; + + for(;size > 0;size--) { + sum = -lum_m4[0]; + sum += lum_m3[0] << 2; + sum += lum_m2[0] << 1; + lum_m4[0]=lum_m2[0]; + sum += lum_m1[0] << 2; + sum += -lum[0]; + lum_m2[0] = cm[(sum + 4) >> 3]; + lum_m4++; + lum_m3++; + lum_m2++; + lum_m1++; + lum++; + } +} +#endif /* !HAVE_MMX_EXTERNAL */ + +/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The + top field is copied as is, but the bottom field is deinterlaced + against the top field. */ +static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap, + const uint8_t *src1, int src_wrap, + int width, int height) +{ + const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2; + int y; + + src_m2 = src1; + src_m1 = src1; + src_0=&src_m1[src_wrap]; + src_p1=&src_0[src_wrap]; + src_p2=&src_p1[src_wrap]; + for(y=0;y<(height-2);y+=2) { + memcpy(dst,src_m1,width); + dst += dst_wrap; + deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width); + src_m2 = src_0; + src_m1 = src_p1; + src_0 = src_p2; + src_p1 += 2*src_wrap; + src_p2 += 2*src_wrap; + dst += dst_wrap; + } + memcpy(dst,src_m1,width); + dst += dst_wrap; + /* do last line */ + deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width); +} + +static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap, + int width, int height) +{ + uint8_t *src_m1, *src_0, *src_p1, *src_p2; + int y; + uint8_t *buf; + buf = av_malloc(width); + + src_m1 = src1; + memcpy(buf,src_m1,width); + src_0=&src_m1[src_wrap]; + src_p1=&src_0[src_wrap]; + src_p2=&src_p1[src_wrap]; + for(y=0;y<(height-2);y+=2) { + deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width); + src_m1 = src_p1; + src_0 = src_p2; + src_p1 += 2*src_wrap; + src_p2 += 2*src_wrap; + } + /* do last line */ + deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width); + av_free(buf); +} + +int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, + enum AVPixelFormat pix_fmt, int width, int height) +{ + int i; + + if (pix_fmt != AV_PIX_FMT_YUV420P && + pix_fmt != AV_PIX_FMT_YUVJ420P && + pix_fmt != AV_PIX_FMT_YUV422P && + pix_fmt != AV_PIX_FMT_YUVJ422P && + pix_fmt != AV_PIX_FMT_YUV444P && + pix_fmt != AV_PIX_FMT_YUV411P && + pix_fmt != AV_PIX_FMT_GRAY8) + return -1; + if ((width & 3) != 0 || (height & 3) != 0) + return -1; + + for(i=0;i<3;i++) { + if (i == 1) { + switch(pix_fmt) { + case AV_PIX_FMT_YUVJ420P: + case AV_PIX_FMT_YUV420P: + width >>= 1; + height >>= 1; + break; + case AV_PIX_FMT_YUV422P: + case AV_PIX_FMT_YUVJ422P: + width >>= 1; + break; + case AV_PIX_FMT_YUV411P: + width >>= 2; + break; + default: + break; + } + if (pix_fmt == AV_PIX_FMT_GRAY8) { + break; + } + } + if (src == dst) { + deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i], + width, height); + } else { + deinterlace_bottom_field(dst->data[i],dst->linesize[i], + src->data[i], src->linesize[i], + width, height); + } + } + emms_c(); + return 0; +} + +#endif /* FF_API_DEINTERLACE */ + +#ifdef TEST + +int main(void){ + int i; + int err=0; + int skip = 0; + + for (i=0; iname) { + skip ++; + continue; + } + if (skip) { + av_log(NULL, AV_LOG_INFO, "%3d unused pixel format values\n", skip); + skip = 0; + } + av_log(NULL, AV_LOG_INFO, "pix fmt %s yuv_plan:%d avg_bpp:%d colortype:%d\n", desc->name, is_yuv_planar(desc), av_get_padded_bits_per_pixel(desc), get_color_type(desc)); + if ((!(desc->flags & PIX_FMT_ALPHA)) != (desc->nb_components != 2 && desc->nb_components != 4)) { + av_log(NULL, AV_LOG_ERROR, "Alpha flag mismatch\n"); + err = 1; + } + } + return err; +} + +#endif -- cgit v1.2.3