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-rw-r--r--libavcodec/rv34.c155
1 files changed, 76 insertions, 79 deletions
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index b5d314cf0f..c5dcfdcba4 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -62,8 +62,10 @@ static const int rv34_mb_type_to_lavc[12] = {
static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
+static int rv34_decode_mv(RV34DecContext *r, int block_type);
+
/**
- * @defgroup vlc RV30/40 VLC generating functions
+ * @name RV30/40 VLC generating functions
* @{
*/
@@ -171,7 +173,7 @@ static av_cold void rv34_init_tables(void)
/**
- * @defgroup transform RV30/40 inverse transform functions
+ * @name RV30/40 inverse transform functions
* @{
*/
@@ -246,7 +248,7 @@ static void rv34_inv_transform_noround(DCTELEM *block){
/**
- * @defgroup block RV30/40 4x4 block decoding functions
+ * @name RV30/40 4x4 block decoding functions
* @{
*/
@@ -393,7 +395,7 @@ static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q)
/**
- * @defgroup rv3040_bitstream RV30/40 bitstream parsing
+ * @name RV30/40 bitstream parsing
* @{
*/
@@ -432,10 +434,76 @@ static inline int rv34_decode_dquant(GetBitContext *gb, int quant)
return get_bits(gb, 5);
}
+/**
+ * Decode macroblock header and return CBP in case of success, -1 otherwise.
+ */
+static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
+{
+ MpegEncContext *s = &r->s;
+ GetBitContext *gb = &s->gb;
+ int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+ int i, t;
+
+ if(!r->si.type){
+ r->is16 = get_bits1(gb);
+ if(!r->is16 && !r->rv30){
+ if(!get_bits1(gb))
+ av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
+ }
+ s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
+ r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
+ }else{
+ r->block_type = r->decode_mb_info(r);
+ if(r->block_type == -1)
+ return -1;
+ s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
+ r->mb_type[mb_pos] = r->block_type;
+ if(r->block_type == RV34_MB_SKIP){
+ if(s->pict_type == AV_PICTURE_TYPE_P)
+ r->mb_type[mb_pos] = RV34_MB_P_16x16;
+ if(s->pict_type == AV_PICTURE_TYPE_B)
+ r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
+ }
+ r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
+ rv34_decode_mv(r, r->block_type);
+ if(r->block_type == RV34_MB_SKIP){
+ fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
+ return 0;
+ }
+ r->chroma_vlc = 1;
+ r->luma_vlc = 0;
+ }
+ if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
+ if(r->is16){
+ t = get_bits(gb, 2);
+ fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
+ r->luma_vlc = 2;
+ }else{
+ if(r->decode_intra_types(r, gb, intra_types) < 0)
+ return -1;
+ r->luma_vlc = 1;
+ }
+ r->chroma_vlc = 0;
+ r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
+ }else{
+ for(i = 0; i < 16; i++)
+ intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
+ r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
+ if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
+ r->is16 = 1;
+ r->chroma_vlc = 1;
+ r->luma_vlc = 2;
+ r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
+ }
+ }
+
+ return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
+}
+
/** @} */ //bitstream functions
/**
- * @defgroup mv motion vector related code (prediction, reconstruction, motion compensation)
+ * @name motion vector related code (prediction, reconstruction, motion compensation)
* @{
*/
@@ -885,7 +953,7 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
/** @} */ // mv group
/**
- * @defgroup recons Macroblock reconstruction functions
+ * @name Macroblock reconstruction functions
* @{
*/
/** mapping of RV30/40 intra prediction types to standard H.264 types */
@@ -1027,79 +1095,6 @@ static void rv34_output_macroblock(RV34DecContext *r, int8_t *intra_types, int c
}
}
-/** @} */ // recons group
-
-/**
- * @addtogroup bitstream
- * Decode macroblock header and return CBP in case of success, -1 otherwise.
- */
-static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
-{
- MpegEncContext *s = &r->s;
- GetBitContext *gb = &s->gb;
- int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
- int i, t;
-
- if(!r->si.type){
- r->is16 = get_bits1(gb);
- if(!r->is16 && !r->rv30){
- if(!get_bits1(gb))
- av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
- }
- s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
- r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
- }else{
- r->block_type = r->decode_mb_info(r);
- if(r->block_type == -1)
- return -1;
- s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
- r->mb_type[mb_pos] = r->block_type;
- if(r->block_type == RV34_MB_SKIP){
- if(s->pict_type == AV_PICTURE_TYPE_P)
- r->mb_type[mb_pos] = RV34_MB_P_16x16;
- if(s->pict_type == AV_PICTURE_TYPE_B)
- r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
- }
- r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
- rv34_decode_mv(r, r->block_type);
- if(r->block_type == RV34_MB_SKIP){
- fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
- return 0;
- }
- r->chroma_vlc = 1;
- r->luma_vlc = 0;
- }
- if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
- if(r->is16){
- t = get_bits(gb, 2);
- fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
- r->luma_vlc = 2;
- }else{
- if(r->decode_intra_types(r, gb, intra_types) < 0)
- return -1;
- r->luma_vlc = 1;
- }
- r->chroma_vlc = 0;
- r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
- }else{
- for(i = 0; i < 16; i++)
- intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
- r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
- if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
- r->is16 = 1;
- r->chroma_vlc = 1;
- r->luma_vlc = 2;
- r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
- }
- }
-
- return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
-}
-
-/**
- * @addtogroup recons
- * @{
- */
/**
* mask for retrieving all bits in coded block pattern
* corresponding to one 8x8 block
@@ -1109,6 +1104,8 @@ static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
#define U_CBP_MASK 0x0F0000
#define V_CBP_MASK 0xF00000
+/** @} */ // recons group
+
static void rv34_apply_differences(RV34DecContext *r, int cbp)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-11 13:07:14 +0000