From: Michael Bradshaw <mbrads...@sorensonmedia.com> Based on FFmpeg version from commit 3275981207e30e140cffaea334ac390f1a04266a --- libavcodec/libopenjpegdec.c | 305 +++++++++++++++++++++++++++++++++++-------- 1 files changed, 250 insertions(+), 55 deletions(-)
diff --git a/libavcodec/libopenjpegdec.c b/libavcodec/libopenjpegdec.c index 799ccd7..1c08f8a 100644 --- a/libavcodec/libopenjpegdec.c +++ b/libavcodec/libopenjpegdec.c @@ -24,29 +24,200 @@ * JPEG 2000 decoder using libopenjpeg */ +#define OPJ_STATIC +#include <openjpeg.h> + +#include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" +#include "libavutil/pixfmt.h" +#include "libavutil/opt.h" #include "avcodec.h" -#include "libavutil/intreadwrite.h" #include "thread.h" -#define OPJ_STATIC -#include <openjpeg.h> #define JP2_SIG_TYPE 0x6A502020 #define JP2_SIG_VALUE 0x0D0A870A +// pix_fmts with lower bpp have to be listed before +// similar pix_fmts with higher bpp. +#define RGB_PIXEL_FORMATS PIX_FMT_RGB24, PIX_FMT_RGBA, \ + PIX_FMT_RGB48 + +#define GRAY_PIXEL_FORMATS PIX_FMT_GRAY8, PIX_FMT_Y400A, \ + PIX_FMT_GRAY16 + +#define YUV_PIXEL_FORMATS PIX_FMT_YUV410P, PIX_FMT_YUV411P, \ + PIX_FMT_YUVA420P, \ + PIX_FMT_YUV420P, PIX_FMT_YUV422P, \ + 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 rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}; +static const enum PixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}; +static const enum PixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}; +static const enum PixelFormat any_pix_fmts[] = {RGB_PIXEL_FORMATS, + GRAY_PIXEL_FORMATS, + YUV_PIXEL_FORMATS}; + typedef struct { opj_dparameters_t dec_params; AVFrame image; } LibOpenJPEGContext; -static int check_image_attributes(opj_image_t *image) +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; + + if (descriptor.nb_components != image->numcomps) { + return 0; + } + + switch (descriptor.nb_components) { + case 4: match = match && descriptor.comp[3].depth_minus1 + 1 >= image->comps[3].prec && + 1 == image->comps[3].dx && + 1 == 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; + } + + 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; + + switch (image->color_space) { + case CLRSPC_SRGB: + possible_fmts = rgb_pix_fmts; + possible_fmts_nb = FF_ARRAY_ELEMS(rgb_pix_fmts); + break; + case CLRSPC_GRAY: + possible_fmts = gray_pix_fmts; + possible_fmts_nb = FF_ARRAY_ELEMS(gray_pix_fmts); + break; + case CLRSPC_SYCC: + possible_fmts = yuv_pix_fmts; + possible_fmts_nb = FF_ARRAY_ELEMS(yuv_pix_fmts); + break; + default: + possible_fmts = any_pix_fmts; + possible_fmts_nb = FF_ARRAY_ELEMS(any_pix_fmts); + break; + } + + for (index = 0; index < possible_fmts_nb; ++index) { + if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) { + return possible_fmts[index]; + } + } + + return PIX_FMT_NONE; +} + +static inline int libopenjpeg_ispacked(enum PixelFormat pix_fmt) { - return image->comps[0].dx == image->comps[1].dx && - image->comps[1].dx == image->comps[2].dx && - image->comps[0].dy == image->comps[1].dy && - image->comps[1].dy == image->comps[2].dy && - image->comps[0].prec == image->comps[1].prec && - image->comps[1].prec == image->comps[2].prec; + int i, component_plane; + + if (pix_fmt == PIX_FMT_GRAY16) + return 0; + + component_plane = av_pix_fmt_descriptors[pix_fmt].comp[0].plane; + for (i = 1; i < av_pix_fmt_descriptors[pix_fmt].nb_components; i++) { + if (component_plane != av_pix_fmt_descriptors[pix_fmt].comp[i].plane) + return 0; + } + return 1; +} + +static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, + opj_image_t *image) +{ + uint8_t *img_ptr; + int index, x, y, c; + for (y = 0; y < picture->height; y++) { + index = y*picture->width; + img_ptr = picture->data[0] + y*picture->linesize[0]; + for (x = 0; x < picture->width; x++, index++) { + for (c = 0; c < image->numcomps; c++) { + *img_ptr++ = image->comps[c].data[index]; + } + } + } +} + +static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, + opj_image_t *image) +{ + uint16_t *img_ptr; + int index, x, y, c; + int adjust[4]; + for (x = 0; x < image->numcomps; x++) { + adjust[x] = FFMAX(FFMIN(16 - image->comps[x].prec, 8), 0); + } + for (y = 0; y < picture->height; y++) { + index = y*picture->width; + img_ptr = (uint16_t*) (picture->data[0] + y*picture->linesize[0]); + for (x = 0; x < picture->width; x++, index++) { + for (c = 0; c < image->numcomps; c++) { + *img_ptr++ = image->comps[c].data[index] << adjust[c]; + } + } + } +} + +static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) +{ + int *comp_data; + uint8_t *img_ptr; + int index, x, y; + + for (index = 0; index < image->numcomps; index++) { + comp_data = image->comps[index].data; + for (y = 0; y < image->comps[index].h; y++) { + img_ptr = picture->data[index] + y * picture->linesize[index]; + for (x = 0; x < image->comps[index].w; x++) { + *img_ptr = (uint8_t) *comp_data; + img_ptr++; + comp_data++; + } + } + } +} + +static inline void libopenjpeg_copyto16(AVFrame *p, opj_image_t *image) +{ + int *comp_data; + uint16_t *img_ptr; + int index, x, y; + for (index = 0; index < image->numcomps; index++) { + comp_data = image->comps[index].data; + for (y = 0; y < image->comps[index].h; y++) { + img_ptr = (uint16_t*) (p->data[index] + y * p->linesize[index]); + for (x = 0; x < image->comps[index].w; x++) { + *img_ptr = *comp_data; + img_ptr++; + comp_data++; + } + } + } } static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx) @@ -54,6 +225,7 @@ static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx) LibOpenJPEGContext *ctx = avctx->priv_data; opj_set_default_decoder_parameters(&ctx->dec_params); + avcodec_get_frame_defaults(&ctx->image); avctx->coded_frame = &ctx->image; return 0; } @@ -77,10 +249,10 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx, opj_dinfo_t *dec; opj_cio_t *stream; opj_image_t *image; - int width, height, has_alpha = 0, ret = -1; - int x, y, index; - uint8_t *img_ptr; - int adjust[4]; + int width, height, ret = -1; + int pixel_size = 0; + int ispacked = 0; + int i; *data_size = 0; @@ -124,69 +296,92 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx, width = image->x1 - image->x0; height = image->y1 - image->y0; if(av_image_check_size(width, height, 0, avctx) < 0) { - av_log(avctx, AV_LOG_ERROR, "%dx%d dimension invalid.\n", width, height); + av_log(avctx, AV_LOG_ERROR, + "%dx%d dimension invalid.\n", width, height); goto done; } avcodec_set_dimensions(avctx, width, height); - switch(image->numcomps) - { - case 1: avctx->pix_fmt = PIX_FMT_GRAY8; - break; - case 3: if(check_image_attributes(image)) { - avctx->pix_fmt = PIX_FMT_RGB24; - } else { - avctx->pix_fmt = PIX_FMT_GRAY8; - av_log(avctx, AV_LOG_ERROR, "Only first component will be used.\n"); - } - break; - case 4: has_alpha = 1; - avctx->pix_fmt = PIX_FMT_RGBA; - break; - default: av_log(avctx, AV_LOG_ERROR, "%d components unsupported.\n", image->numcomps); - goto done; - } - - if(picture->data[0]) + 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; + } + + for (i = 0; i < image->numcomps; i++) + if (image->comps[i].prec > avctx->bits_per_raw_sample) + avctx->bits_per_raw_sample = image->comps[i].prec; + + if (picture->data[0]) ff_thread_release_buffer(avctx, picture); - if(ff_thread_get_buffer(avctx, picture) < 0){ + if (ff_thread_get_buffer(avctx, picture) < 0) { av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed\n"); - return -1; + goto done; } - ff_thread_finish_setup(avctx); - ctx->dec_params.cp_limit_decoding = NO_LIMITATION; // Tie decoder with decoding parameters opj_setup_decoder(dec, &ctx->dec_params); stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size); if(!stream) { - av_log(avctx, AV_LOG_ERROR, "Codestream could not be opened for reading.\n"); - opj_destroy_decompress(dec); - return -1; + av_log(avctx, AV_LOG_ERROR, + "Codestream could not be opened for reading.\n"); + goto done; } + opj_image_destroy(image); // Decode the codestream image = opj_decode_with_info(dec, stream, NULL); opj_cio_close(stream); - - for(x = 0; x < image->numcomps; x++) { - adjust[x] = FFMAX(image->comps[x].prec - 8, 0); + if(!image) { + av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); + goto done; } - for(y = 0; y < avctx->height; y++) { - index = y*avctx->width; - img_ptr = picture->data[0] + y*picture->linesize[0]; - for(x = 0; x < avctx->width; x++, index++) { - *img_ptr++ = image->comps[0].data[index] >> adjust[0]; - if(image->numcomps > 2 && check_image_attributes(image)) { - *img_ptr++ = image->comps[1].data[index] >> adjust[1]; - *img_ptr++ = image->comps[2].data[index] >> adjust[2]; - if(has_alpha) - *img_ptr++ = image->comps[3].data[index] >> adjust[3]; - } + pixel_size = + av_pix_fmt_descriptors[avctx->pix_fmt].comp[0].step_minus1 + 1; + ispacked = libopenjpeg_ispacked(avctx->pix_fmt); + + switch (pixel_size) { + case 1: + if (ispacked) { + libopenjpeg_copy_to_packed8(picture, image); + } else { + libopenjpeg_copyto8(picture, image); + } + break; + case 2: + if (ispacked) { + libopenjpeg_copy_to_packed8(picture, image); + } else { + libopenjpeg_copyto16(picture, image); + } + break; + case 3: + case 4: + if (ispacked) { + libopenjpeg_copy_to_packed8(picture, image); } + break; + case 6: + case 8: + if (ispacked) { + libopenjpeg_copy_to_packed16(picture, image); + } + break; + default: + av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size); + goto done; } *output = ctx->image; -- 1.7.8.rc1 _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel