#define JP2_SIG_TYPE 0x6A502020
#define JP2_SIG_VALUE 0x0D0A870A
+#define RGB_PIXEL_FORMATS PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_RGBA64
+#define GRAY_PIXEL_FORMATS PIX_FMT_GRAY8,PIX_FMT_GRAY8A,PIX_FMT_GRAY16
+#define YUV_PIXEL_FORMATS PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P, \
+ PIX_FMT_YUV440P,PIX_FMT_YUV444P, \
+ PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9, \
+ PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10, \
+ PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16
+
+static const enum PixelFormat libopenjpeg_rgb_pix_fmts[] = {RGB_PIXEL_FORMATS};
+static const enum PixelFormat libopenjpeg_gray_pix_fmts[] = {GRAY_PIXEL_FORMATS};
+static const enum PixelFormat libopenjpeg_yuv_pix_fmts[] = {YUV_PIXEL_FORMATS};
+static const enum PixelFormat libopenjpeg_all_pix_fmts[] = {RGB_PIXEL_FORMATS,GRAY_PIXEL_FORMATS,YUV_PIXEL_FORMATS};
+
typedef struct {
opj_dparameters_t dec_params;
AVFrame image;
} LibOpenJPEGContext;
-static enum PixelFormat check_image_attributes(AVCodecContext *avctx, opj_image_t *image)
-{
- opj_image_comp_t c0 = image->comps[0];
- opj_image_comp_t c1 = image->comps[1];
- opj_image_comp_t c2 = image->comps[2];
- int compRatio = 0;
- compRatio |= c0.dx << 15 | c0.dy << 12;
- compRatio |= c1.dx << 9 | c1.dy << 6;
- compRatio |= c2.dx << 3 | c2.dy;
-
- if (image->numcomps == 4) {
- if (c0.prec == 8) {
- if (compRatio == 0112222 &&
- image->comps[3].dx == 1 && image->comps[3].dy == 1) {
- return PIX_FMT_YUVA420P;
- } else {
- return PIX_FMT_RGBA;
- }
- } else {
- return PIX_FMT_RGBA64;
- }
- }
+static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum PixelFormat pix_fmt){
+ AVPixFmtDescriptor descriptor = av_pix_fmt_descriptors[pix_fmt];
+ int match = 1;
- switch (compRatio) {
- case 0111111: goto libopenjpeg_yuv444_rgb;
- case 0111212: return PIX_FMT_YUV440P;
- case 0112121: goto libopenjpeg_yuv422;
- case 0112222: goto libopenjpeg_yuv420;
- default: goto libopenjpeg_rgb;
+ if (descriptor.nb_components != image->numcomps) {
+ return 0;
}
-libopenjpeg_yuv420:
- switch (c0.prec) {
- case 8: return PIX_FMT_YUV420P;
- case 9: return PIX_FMT_YUV420P9;
- case 10: return PIX_FMT_YUV420P10;
- case 16: return PIX_FMT_YUV420P16;
+ switch (descriptor.nb_components) {
+ case 4: match = match && descriptor.comp[3].depth_minus1 + 1 == image->comps[3].prec &&
+ 1 << descriptor.log2_chroma_w == image->comps[3].dx &&
+ 1 << descriptor.log2_chroma_h == image->comps[3].dy;
+ case 3: match = match && descriptor.comp[2].depth_minus1 + 1 == image->comps[2].prec &&
+ 1 << descriptor.log2_chroma_w == image->comps[2].dx &&
+ 1 << descriptor.log2_chroma_h == image->comps[2].dy;
+ case 2: match = match && descriptor.comp[1].depth_minus1 + 1 == image->comps[1].prec &&
+ 1 << descriptor.log2_chroma_w == image->comps[1].dx &&
+ 1 << descriptor.log2_chroma_h == image->comps[1].dy;
+ case 1: match = match && descriptor.comp[0].depth_minus1 + 1 == image->comps[0].prec &&
+ 1 == image->comps[0].dx &&
+ 1 == image->comps[0].dy;
+ default:
+ break;
}
-libopenjpeg_yuv422:
- switch (c0.prec) {
- case 8: return PIX_FMT_YUV422P;
- case 9: return PIX_FMT_YUV422P9;
- case 10: return PIX_FMT_YUV422P10;
- case 16: return PIX_FMT_YUV422P16;
- }
+ return match;
+}
+
+static inline enum PixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
+ int index;
+ const enum PixelFormat *possible_fmts = NULL;
+ int possible_fmts_nb = 0;
-libopenjpeg_yuv444_rgb:
- switch (c0.prec) {
- case 8: return PIX_FMT_RGB24;
- case 9: return PIX_FMT_YUV444P9;
- case 10: return PIX_FMT_YUV444P10;
- case 16: return PIX_FMT_YUV444P16;
+ switch (image->color_space) {
+ case CLRSPC_SRGB:
+ possible_fmts = libopenjpeg_rgb_pix_fmts;
+ possible_fmts_nb = sizeof(libopenjpeg_rgb_pix_fmts) / sizeof(enum PixelFormat);
+ break;
+ case CLRSPC_GRAY:
+ possible_fmts = libopenjpeg_gray_pix_fmts;
+ possible_fmts_nb = sizeof(libopenjpeg_gray_pix_fmts) / sizeof(enum PixelFormat);
+ break;
+ case CLRSPC_SYCC:
+ possible_fmts = libopenjpeg_yuv_pix_fmts;
+ possible_fmts_nb = sizeof(libopenjpeg_yuv_pix_fmts) / sizeof(enum PixelFormat);
+ break;
+ default:
+ possible_fmts = libopenjpeg_all_pix_fmts;
+ possible_fmts_nb = sizeof(libopenjpeg_all_pix_fmts) / sizeof(enum PixelFormat);
+ break;
}
-libopenjpeg_rgb:
- switch (c0.prec) {
- case 8: return PIX_FMT_RGB24;
- default: return PIX_FMT_RGB48;
+ for (index = 0; index < possible_fmts_nb; ++index) {
+ if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
+ return possible_fmts[index];
+ }
}
- return PIX_FMT_RGB24;
+ return PIX_FMT_NONE;
}
static inline int libopenjpeg_ispacked(enum PixelFormat pix_fmt) {
}
avcodec_set_dimensions(avctx, width, height);
- switch (image->numcomps) {
- case 1: avctx->pix_fmt = (image->comps[0].prec == 8) ? PIX_FMT_GRAY8 : PIX_FMT_GRAY16;
- break;
- case 2: avctx->pix_fmt = PIX_FMT_GRAY8A;
- break;
- case 3:
- case 4: avctx->pix_fmt = check_image_attributes(avctx, image);
- break;
- default: av_log(avctx, AV_LOG_ERROR, "%d components unsupported.\n", image->numcomps);
- goto done;
+ if (avctx->pix_fmt != PIX_FMT_NONE) {
+ if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt)) {
+ avctx->pix_fmt = PIX_FMT_NONE;
+ }
+ }
+
+ if (avctx->pix_fmt == PIX_FMT_NONE) {
+ avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
+ }
+
+ if (avctx->pix_fmt == PIX_FMT_NONE) {
+ av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format\n");
+ goto done;
}
if(picture->data[0])