mirror of
https://github.com/mpv-player/mpv
synced 2024-12-28 01:52:19 +00:00
3afc6449c1
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5280 b3059339-0415-0410-9bf9-f77b7e298cf2
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef HAVE_ZLIB
|
|
#include "mp_msg.h"
|
|
|
|
#include <zlib.h>
|
|
|
|
#include "vd_internal.h"
|
|
|
|
static vd_info_t info = {
|
|
"zlib decoder (avizlib)",
|
|
"zlib",
|
|
VFM_ZLIB,
|
|
"Alex",
|
|
"based on vd_ijpg.c",
|
|
"uses zlib, supports only BGR24 (as AVIzlib)"
|
|
};
|
|
|
|
LIBVD_EXTERN(zlib)
|
|
|
|
typedef struct {
|
|
int width;
|
|
int height;
|
|
int depth;
|
|
z_stream zstrm;
|
|
} vd_zlib_ctx;
|
|
|
|
// to set/get/query special features/parameters
|
|
static int control(sh_video_t *sh, int cmd, void *arg, ...)
|
|
{
|
|
vd_zlib_ctx *ctx = sh->context;
|
|
switch(cmd)
|
|
{
|
|
case VDCTRL_QUERY_FORMAT:
|
|
{
|
|
if (*((int*)arg) == (IMGFMT_BGR|ctx->depth))
|
|
return(CONTROL_TRUE);
|
|
else
|
|
return(CONTROL_FALSE);
|
|
}
|
|
}
|
|
return(CONTROL_UNKNOWN);
|
|
}
|
|
|
|
// init driver
|
|
static int init(sh_video_t *sh)
|
|
{
|
|
int zret;
|
|
vd_zlib_ctx *ctx;
|
|
|
|
ctx = sh->context = malloc(sizeof(vd_zlib_ctx));
|
|
if (!ctx)
|
|
return(0);
|
|
memset(ctx, 0, sizeof(vd_zlib_ctx));
|
|
|
|
ctx->width = sh->bih->biWidth;
|
|
ctx->height = sh->bih->biHeight;
|
|
ctx->depth = sh->bih->biBitCount;
|
|
|
|
ctx->zstrm.zalloc = (alloc_func)NULL;
|
|
ctx->zstrm.zfree = (free_func)NULL;
|
|
ctx->zstrm.opaque = (voidpf)NULL;
|
|
|
|
zret = inflateInit(&ctx->zstrm);
|
|
if (zret != Z_OK)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[vd_zlib] inflate init error: %d\n",
|
|
zret);
|
|
return(NULL);
|
|
}
|
|
|
|
if (!mpcodecs_config_vo(sh, ctx->width, ctx->height, IMGFMT_BGR|ctx->depth))
|
|
return(NULL);
|
|
|
|
|
|
return(1);
|
|
}
|
|
|
|
// uninit driver
|
|
static void uninit(sh_video_t *sh)
|
|
{
|
|
vd_zlib_ctx *ctx = sh->context;
|
|
|
|
inflateEnd(&ctx->zstrm);
|
|
if (ctx)
|
|
free(ctx);
|
|
}
|
|
|
|
//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
|
|
|
|
// decode a frame
|
|
static mp_image_t* decode(sh_video_t *sh, void* data, int len, int flags)
|
|
{
|
|
mp_image_t *mpi;
|
|
vd_zlib_ctx *ctx = sh->context;
|
|
int zret;
|
|
int decomp_size = ctx->width*ctx->height*((ctx->depth+7)/8);
|
|
z_stream *zstrm = &ctx->zstrm;
|
|
|
|
if (len <= 0)
|
|
return(NULL); // skipped frame
|
|
|
|
mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, 0, ctx->width, ctx->height);
|
|
if (!mpi) return(NULL);
|
|
|
|
zstrm->next_in = data;
|
|
zstrm->avail_in = len;
|
|
zstrm->next_out = mpi->planes[0];
|
|
zstrm->avail_out = decomp_size;
|
|
|
|
mp_dbg(MSGT_DECVIDEO, MSGL_DBG2, "[vd_zlib] input: %p (%d bytes), output: %p (%d bytes)\n",
|
|
zstrm->next_in, zstrm->avail_in, zstrm->next_out, zstrm->avail_out);
|
|
|
|
zret = inflate(zstrm, Z_NO_FLUSH);
|
|
if ((zret != Z_OK) && (zret != Z_STREAM_END))
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_ERR, "[vd_zlib] inflate error: %d\n",
|
|
zret);
|
|
return(NULL);
|
|
}
|
|
|
|
if (decomp_size != (int)zstrm->total_out)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "[vd_zlib] decoded size differs (%d != %d)\n",
|
|
decomp_size, zstrm->total_out);
|
|
return(NULL);
|
|
}
|
|
|
|
return mpi;
|
|
}
|
|
#endif |