mirror of
https://github.com/mpv-player/mpv
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e9885d32cd
patch by Tilmann Bitterberg <transcode@tibit.org> git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7730 b3059339-0415-0410-9bf9-f77b7e298cf2
149 lines
3.5 KiB
C
149 lines
3.5 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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#include <lzo1x.h>
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#define MOD_NAME "DecLZO"
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static vd_info_t info = {
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"LZO compressed Video",
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"lzo",
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"Tilmann Bitterberg",
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"Transcode development team <http://www.theorie.physik.uni-goettingen.de/~ostreich/transcode/>",
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"based on liblzo: http://www.oberhumer.com/opensource/lzo/"
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};
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LIBVD_EXTERN(lzo)
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static lzo_byte *wrkmem=NULL;
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static int codec = -1;
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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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{
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//printf("[%s] Query!! (%s)\n", MOD_NAME, (codec==IMGFMT_BGR24)?"BGR":"none");
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//printf("[%s] Query!! (%s)\n", MOD_NAME, (codec==IMGFMT_YV12)?"YV12":"none");
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switch(cmd){
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case VDCTRL_QUERY_FORMAT:
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if( (*((int*)arg)) == IMGFMT_BGR24 && codec == IMGFMT_BGR24) return CONTROL_TRUE;
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if( (*((int*)arg)) == IMGFMT_YV12 && codec == IMGFMT_YV12) return CONTROL_TRUE;
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return CONTROL_FALSE;
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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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{
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if (lzo_init() != LZO_E_OK) {
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mp_msg (MSGT_DECVIDEO, MSGL_WARN, "[%s] lzo_init() failed\n", MOD_NAME);
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return 0;
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}
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if (!wrkmem) wrkmem = (lzo_bytep) lzo_malloc(LZO1X_1_MEM_COMPRESS);
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if (wrkmem == NULL) {
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mp_msg (MSGT_DECVIDEO, MSGL_ERR, "[%s] Cannot alloc work memory\n", MOD_NAME);
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return 0;
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}
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return 1;
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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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{
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if (wrkmem) { lzo_free(wrkmem); wrkmem = NULL;}
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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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// 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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{
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static int init_done = 0;
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int r;
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int cb = 1;
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int cr = 2;
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mp_image_t* mpi;
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int w, h;
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if (len <= 0) {
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return NULL; // skipped frame
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}
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if (!init_done) {
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lzo_byte *tmp=NULL;
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// decompress one frame to see if its
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// either YV12 or RGB24
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if (!tmp) tmp = lzo_malloc(sh->bih->biSizeImage);
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mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] 2 depth %d, format %d data %p len (%d) (%d)\n",
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MOD_NAME, sh->bih->biBitCount, sh->format, data, len, sh->bih->biSizeImage
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);
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/* decompress the frame */
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r = lzo1x_decompress (data, len, tmp, &w, wrkmem);
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if (r != LZO_E_OK) {
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/* this should NEVER happen */
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mp_msg (MSGT_DECVIDEO, MSGL_ERR,
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"[%s] internal error - decompression failed: %d\n", MOD_NAME, r);
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return NULL;
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}
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if (w == (sh->bih->biSizeImage)) {
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codec = IMGFMT_BGR24;
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mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] codec choosen is BGR24\n", MOD_NAME);
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} else if (w == (sh->bih->biSizeImage)/2) {
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codec = IMGFMT_YV12;
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mp_msg (MSGT_DECVIDEO, MSGL_V, "[%s] codec choosen is YV12\n", MOD_NAME);
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} else {
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codec = -1;
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"[%s] Unsupported out_fmt\n", MOD_NAME);
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return NULL;
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}
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mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,codec);
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init_done++;
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free(tmp);
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}
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mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, 0,
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sh->disp_w, sh->disp_h);
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if (!mpi) {
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mp_msg (MSGT_DECVIDEO, MSGL_ERR, "[%s] mpcodecs_get_image failed\n", MOD_NAME);
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return NULL;
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}
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r = lzo1x_decompress (data, len, mpi->planes[0], &w, wrkmem);
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if (r != LZO_E_OK) {
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/* this should NEVER happen */
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mp_msg (MSGT_DECVIDEO, MSGL_ERR,
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"[%s] internal error - decompression failed: %d\n", MOD_NAME, r);
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return NULL;
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}
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mp_msg (MSGT_DECVIDEO, MSGL_DBG2,
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"[%s] decompressed %lu bytes into %lu bytes\n", MOD_NAME,
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(long) len, (long)w);
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return mpi;
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}
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/* vim: sw=4
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*/
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