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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2015-09-27 10:09:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-09-27 12:03:00 +0200 |
| commit | 5c6e3a019c5cbcaeb17f3ae0da55070867d6f63d (patch) | |
| tree | 4a4c2c6b3563f2261717c320d078cbab7f613725 /libavcodec/dnxhddec.c | |
| parent | 8e8ed57ea7d33fa2b872884ead5ec3033637ce92 (diff) | |
| download | ffmpeg-5c6e3a019c5cbcaeb17f3ae0da55070867d6f63d.tar.gz | |
dnxhddec: simplify block parsing calls
Fewer arguments, less duplicated code.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/dnxhddec.c')
| -rw-r--r-- | libavcodec/dnxhddec.c | 43 |
1 files changed, 16 insertions, 27 deletions
diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c index 34cf379884..007eabeafc 100644 --- a/libavcodec/dnxhddec.c +++ b/libavcodec/dnxhddec.c @@ -62,22 +62,18 @@ typedef struct DNXHDContext { int mbaff; int act; void (*decode_dct_block)(const struct DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n); + RowContext *row, int n); } DNXHDContext; #define DNXHD_VLC_BITS 9 #define DNXHD_DC_VLC_BITS 7 static void dnxhd_decode_dct_block_8(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n); + RowContext *row, int n); static void dnxhd_decode_dct_block_10(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n); + RowContext *row, int n); static void dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n); + RowContext *row, int n); static av_cold int dnxhd_decode_init(AVCodecContext *avctx) { @@ -271,7 +267,7 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, static av_always_inline void dnxhd_decode_dct_block(const DNXHDContext *ctx, RowContext *row, - int16_t *block, int n, + int n, int index_bits, int level_bias, int level_shift) @@ -282,9 +278,12 @@ static av_always_inline void dnxhd_decode_dct_block(const DNXHDContext *ctx, const uint8_t *weight_matrix; const uint8_t *ac_level = ctx->cid_table->ac_level; const uint8_t *ac_flags = ctx->cid_table->ac_flags; + int16_t *block = row->blocks[n]; const int eob_index = ctx->cid_table->eob_index; OPEN_READER(bs, &row->gb); + ctx->bdsp.clear_block(block); + if (!ctx->is_444) { if (n & 2) { component = 1 + (n & 1); @@ -364,24 +363,21 @@ static av_always_inline void dnxhd_decode_dct_block(const DNXHDContext *ctx, } static void dnxhd_decode_dct_block_8(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n) + RowContext *row, int n) { - dnxhd_decode_dct_block(ctx, row, block, n, 4, 32, 6); + dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6); } static void dnxhd_decode_dct_block_10(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n) + RowContext *row, int n) { - dnxhd_decode_dct_block(ctx, row, block, n, 6, 8, 4); + dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4); } static void dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, - RowContext *row, int16_t *block, - int n) + RowContext *row, int n) { - dnxhd_decode_dct_block(ctx, row, block, n, 6, 32, 6); + dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6); } static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, @@ -418,15 +414,8 @@ static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, row->last_qscale = qscale; } - for (i = 0; i < 8; i++) { - ctx->bdsp.clear_block(row->blocks[i]); - ctx->decode_dct_block(ctx, row, row->blocks[i], i); - } - if (ctx->is_444) { - for (; i < 12; i++) { - ctx->bdsp.clear_block(row->blocks[i]); - ctx->decode_dct_block(ctx, row, row->blocks[i], i); - } + for (i = 0; i < 8 + 4 * ctx->is_444; i++) { + ctx->decode_dct_block(ctx, row, i); } if (frame->interlaced_frame) { |