mirror of https://github.com/mpv-player/mpv
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "vd_internal.h"
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static vd_info_t info = {
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"Quicktime Animation (RLE) decoder",
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"qtrle",
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"A'rpi",
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"Mike Melanson",
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"native codec"
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};
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LIBVD_EXTERN(qtrle)
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typedef struct {
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int depth;
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void *palette;
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} vd_qtrle_ctx;
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// to set/get/query special features/parameters
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static int control(sh_video_t *sh,int cmd,void* arg,...){
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vd_qtrle_ctx *ctx = sh->context;
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switch(cmd)
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{
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case VDCTRL_QUERY_FORMAT:
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{
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int req_format = *((int*)arg);
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/* qtrle24 supports 32bit output too */
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if ((req_format == (IMGFMT_BGR|ctx->depth)) ||
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((IMGFMT_BGR_DEPTH(req_format) == 32) && (ctx->depth == 24)))
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return(CONTROL_TRUE);
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else
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return(CONTROL_FALSE);
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}
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}
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return CONTROL_UNKNOWN;
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}
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// init driver
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static int init(sh_video_t *sh){
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vd_qtrle_ctx *ctx;
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ctx = sh->context = malloc(sizeof(vd_qtrle_ctx));
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if (!ctx)
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return(0);
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memset(ctx, 0, sizeof(vd_qtrle_ctx));
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if (!sh->bih)
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return(0);
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ctx->depth = sh->bih->biBitCount;
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switch(ctx->depth)
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{
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case 2:
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case 4:
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case 8:
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if (sh->bih->biSize > 40)
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{
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ctx->palette = malloc(sh->bih->biSize-40);
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memcpy(ctx->palette, sh->bih+40, sh->bih->biSize-40);
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}
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break;
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case 16:
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ctx->depth--; /* this is the trick ;) */
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break;
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case 24:
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break;
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default:
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,
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"*** FYI: This Quicktime file is using %d-bit RLE Animation\n" \
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"encoding, which is not yet supported by MPlayer. But if you upload\n" \
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"this Quicktime file to the MPlayer FTP, the team could look at it.\n",
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ctx->depth);
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return(0);
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}
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return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_BGR|ctx->depth);
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}
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// uninit driver
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static void uninit(sh_video_t *sh){
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vd_qtrle_ctx *ctx = sh->context;
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if (ctx->palette)
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free(ctx->palette);
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free(ctx);
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}
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//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
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void qt_decode_rle(
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unsigned char *encoded,
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int encoded_size,
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unsigned char *decoded,
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int width,
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int height,
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int encoded_bpp,
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int bytes_per_pixel);
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// decode a frame
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static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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vd_qtrle_ctx *ctx = sh->context;
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mp_image_t* mpi;
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if(len<=0) return NULL; // skipped frame
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mpi=mpcodecs_get_image(sh, MP_IMGTYPE_STATIC, MP_IMGFLAG_PRESERVE,
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sh->disp_w, sh->disp_h);
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if(!mpi) return NULL;
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qt_decode_rle(
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data,len, mpi->planes[0],
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sh->disp_w, sh->disp_h,
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sh->bih->biBitCount,
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mpi->bpp/8);
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if (ctx->palette)
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mpi->planes[1] = ctx->palette;
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return mpi;
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}
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