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Untangle mpeg12.c and mdec.c so that mdec.c can be compiled separately.

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Originally committed as revision 14851 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun 2008-08-19 20:52:26 +00:00
parent 7942269b71
commit 0da49fca79
4 changed files with 33 additions and 34 deletions
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2
libavcodec/Makefile
View File

@ -120,7 +120,7 @@ OBJS-$(CONFIG_MP3ADU_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mp
OBJS-$(CONFIG_MP3ON4_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o mpeg4audio.o
OBJS-$(CONFIG_MPC7_DECODER) += mpc7.o mpc.o mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
OBJS-$(CONFIG_MPC8_DECODER) += mpc8.o mpc.o mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
OBJS-$(CONFIG_MDEC_DECODER) += mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o
OBJS-$(CONFIG_MDEC_DECODER) += mdec.o mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o
OBJS-$(CONFIG_MPEGVIDEO_DECODER) += mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o
OBJS-$(CONFIG_MPEG1VIDEO_DECODER) += mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o
OBJS-$(CONFIG_MPEG1VIDEO_ENCODER) += mpeg12enc.o mpeg12data.o mpegvideo_enc.o motion_est.o ratecontrol.o mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o

3
libavcodec/mdec.c
View File

@ -30,6 +30,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mpeg12.h"
typedef struct MDECContext{
AVCodecContext *avctx;
@ -223,7 +224,7 @@ static av_cold int decode_init(AVCodecContext *avctx){
AVFrame *p= &a->picture;
mdec_common_init(avctx);
init_vlcs();
ff_init_vlcs();
ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_zigzag_direct);
p->qstride= a->mb_width;

34
libavcodec/mpeg12.c
View File

@ -39,13 +39,11 @@
//#include <assert.h>
#define DC_VLC_BITS 9
#define MV_VLC_BITS 9
#define MBINCR_VLC_BITS 9
#define MB_PAT_VLC_BITS 9
#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
#define TEX_VLC_BITS 9
static inline int mpeg1_decode_block_inter(MpegEncContext *s,
DCTELEM *block,
@ -144,15 +142,13 @@ void ff_mpeg1_clean_buffers(MpegEncContext *s){
/******************************************/
/* decoding */
static VLC dc_lum_vlc;
static VLC dc_chroma_vlc;
static VLC mv_vlc;
static VLC mbincr_vlc;
static VLC mb_ptype_vlc;
static VLC mb_btype_vlc;
static VLC mb_pat_vlc;
static av_cold void init_vlcs(void)
av_cold void ff_init_vlcs(void)
{
static int done = 0;
@ -620,27 +616,6 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
return val;
}
static inline int decode_dc(GetBitContext *gb, int component)
{
int code, diff;
if (component == 0) {
code = get_vlc2(gb, dc_lum_vlc.table, DC_VLC_BITS, 2);
} else {
code = get_vlc2(gb, dc_chroma_vlc.table, DC_VLC_BITS, 2);
}
if (code < 0){
av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
return 0xffff;
}
if (code == 0) {
diff = 0;
} else {
diff = get_xbits(gb, code);
}
return diff;
}
static inline int mpeg1_decode_block_intra(MpegEncContext *s,
DCTELEM *block,
int n)
@ -1220,7 +1195,7 @@ static av_cold int mpeg_decode_init(AVCodecContext *avctx)
s->mpeg_enc_ctx.flags= avctx->flags;
s->mpeg_enc_ctx.flags2= avctx->flags2;
ff_mpeg12_common_init(&s->mpeg_enc_ctx);
init_vlcs();
ff_init_vlcs();
s->mpeg_enc_ctx_allocated = 0;
s->mpeg_enc_ctx.picture_number = 0;
@ -2512,8 +2487,3 @@ AVCodec mpeg_xvmc_decoder = {
};
#endif
/* this is ugly i know, but the alternative is too make
hundreds of vars global and prefix them with ff_mpeg1_
which is far uglier. */
#include "mdec.c"

28
libavcodec/mpeg12.h
View File

@ -24,8 +24,36 @@
#include "mpegvideo.h"
#define DC_VLC_BITS 9
#define TEX_VLC_BITS 9
static VLC dc_lum_vlc;
static VLC dc_chroma_vlc;
extern uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
void ff_mpeg12_common_init(MpegEncContext *s);
void ff_init_vlcs(void);
static inline int decode_dc(GetBitContext *gb, int component)
{
int code, diff;
if (component == 0) {
code = get_vlc2(gb, dc_lum_vlc.table, DC_VLC_BITS, 2);
} else {
code = get_vlc2(gb, dc_chroma_vlc.table, DC_VLC_BITS, 2);
}
if (code < 0){
av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
return 0xffff;
}
if (code == 0) {
diff = 0;
} else {
diff = get_xbits(gb, code);
}
return diff;
}
#endif /* FFMPEG_MPEG12_H */