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authorKostya Shishkov <kostya.shishkov@gmail.com>2010-02-23 07:00:46 +0000
committerKostya Shishkov <kostya.shishkov@gmail.com>2010-02-23 07:00:46 +0000
commit54d4c0de7c80c0252e5670d5c46ee30cf2827a37 (patch)
treeb96f4033e38802c4316117c27037a6a8b91df50f /libavcodec/bink.c
parentba3e8214144d92a20a951996e17b0c9f17695560 (diff)
downloadffmpeg-54d4c0de7c80c0252e5670d5c46ee30cf2827a37.tar.gz
Move plane decoding code into separate function in Bink decoder
Originally committed as revision 21980 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/bink.c')
-rw-r--r--libavcodec/bink.c128
1 files changed, 70 insertions, 58 deletions
diff --git a/libavcodec/bink.c b/libavcodec/bink.c
index bd1326c473..554f61d364 100644
--- a/libavcodec/bink.c
+++ b/libavcodec/bink.c
@@ -672,12 +672,11 @@ static int read_residue(GetBitContext *gb, DCTELEM block[64], int masks_count)
return 0;
}
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
+static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
+ int is_chroma)
{
- BinkContext * const c = avctx->priv_data;
- GetBitContext gb;
int blk;
- int i, j, plane, plane_idx, bx, by;
+ int i, j, bx, by;
uint8_t *dst, *prev, *ref, *ref_start, *ref_end;
int v, col[2];
const uint8_t *scan;
@@ -685,39 +684,16 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
DECLARE_ALIGNED_16(DCTELEM, block[64]);
DECLARE_ALIGNED_16(uint8_t, ublock[64]);
int coordmap[64];
- int bits_count = pkt->size << 3;
-
- if(c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
-
- if(avctx->get_buffer(avctx, &c->pic) < 0){
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- init_get_bits(&gb, pkt->data, bits_count);
- if (c->has_alpha) {
- int aplane_bits = get_bits_long(&gb, 32) << 3;
- if (aplane_bits <= 32 || (aplane_bits & 0x1F)) {
- av_log(avctx, AV_LOG_ERROR, "Incorrect alpha plane size %d\n", aplane_bits);
- return -1;
- }
- skip_bits_long(&gb, aplane_bits - 32);
- }
- if (c->version >= 'i')
- skip_bits_long(&gb, 32);
- for (plane = 0; plane < 3; plane++) {
- const int stride = c->pic.linesize[plane];
- int bw = plane ? (avctx->width + 15) >> 4 : (avctx->width + 7) >> 3;
- int bh = plane ? (avctx->height + 15) >> 4 : (avctx->height + 7) >> 3;
- int width = avctx->width >> !!plane;
+ const int stride = c->pic.linesize[plane_idx];
+ int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
+ int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
+ int width = c->avctx->width >> is_chroma;
init_lengths(c, FFMAX(width, 8), bw);
for (i = 0; i < BINK_NB_SRC; i++)
- read_bundle(&gb, c, i);
+ read_bundle(gb, c, i);
- plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
ref_start = c->last.data[plane_idx];
ref_end = c->last.data[plane_idx]
+ (bw - 1 + c->last.linesize[plane_idx] * (bh - 1)) * 8;
@@ -726,23 +702,23 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
coordmap[i] = (i & 7) + (i >> 3) * stride;
for (by = 0; by < bh; by++) {
- if (read_block_types(avctx, &gb, &c->bundle[BINK_SRC_BLOCK_TYPES]) < 0)
+ if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES]) < 0)
return -1;
- if (read_block_types(avctx, &gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES]) < 0)
+ if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES]) < 0)
return -1;
- if (read_colors(&gb, &c->bundle[BINK_SRC_COLORS], c) < 0)
+ if (read_colors(gb, &c->bundle[BINK_SRC_COLORS], c) < 0)
return -1;
- if (read_patterns(avctx, &gb, &c->bundle[BINK_SRC_PATTERN]) < 0)
+ if (read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN]) < 0)
return -1;
- if (read_motion_values(avctx, &gb, &c->bundle[BINK_SRC_X_OFF]) < 0)
+ if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF]) < 0)
return -1;
- if (read_motion_values(avctx, &gb, &c->bundle[BINK_SRC_Y_OFF]) < 0)
+ if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF]) < 0)
return -1;
- if (read_dcs(avctx, &gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0) < 0)
+ if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0) < 0)
return -1;
- if (read_dcs(avctx, &gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1) < 0)
+ if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1) < 0)
return -1;
- if (read_runs(avctx, &gb, &c->bundle[BINK_SRC_RUN]) < 0)
+ if (read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN]) < 0)
return -1;
if (by == bh)
@@ -766,17 +742,17 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES);
switch (blk) {
case RUN_BLOCK:
- scan = bink_patterns[get_bits(&gb, 4)];
+ scan = bink_patterns[get_bits(gb, 4)];
i = 0;
do {
int run = get_value(c, BINK_SRC_RUN) + 1;
i += run;
if (i > 64) {
- av_log(avctx, AV_LOG_ERROR, "Run went out of bounds\n");
+ av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
return -1;
}
- if (get_bits1(&gb)) {
+ if (get_bits1(gb)) {
v = get_value(c, BINK_SRC_COLORS);
for (j = 0; j < run; j++)
ublock[*scan++] = v;
@@ -791,7 +767,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
case INTRA_BLOCK:
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTRA_DC);
- read_dct_coeffs(&gb, block, c->scantable.permutated, 1);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 1);
c->dsp.idct(block);
c->dsp.put_pixels_nonclamped(block, ublock, 8);
break;
@@ -814,7 +790,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
ublock[i + j*8] = get_value(c, BINK_SRC_COLORS);
break;
default:
- av_log(avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
+ av_log(c->avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
return -1;
}
if (blk != FILL_BLOCK)
@@ -828,24 +804,24 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
yoff = get_value(c, BINK_SRC_Y_OFF);
ref = prev + xoff + yoff * stride;
if (ref < ref_start || ref > ref_end) {
- av_log(avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
+ av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
bx*8 + xoff, by*8 + yoff);
return -1;
}
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
break;
case RUN_BLOCK:
- scan = bink_patterns[get_bits(&gb, 4)];
+ scan = bink_patterns[get_bits(gb, 4)];
i = 0;
do {
int run = get_value(c, BINK_SRC_RUN) + 1;
i += run;
if (i > 64) {
- av_log(avctx, AV_LOG_ERROR, "Run went out of bounds\n");
+ av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
return -1;
}
- if (get_bits1(&gb)) {
+ if (get_bits1(gb)) {
v = get_value(c, BINK_SRC_COLORS);
for (j = 0; j < run; j++)
dst[coordmap[*scan++]] = v;
@@ -862,20 +838,20 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
yoff = get_value(c, BINK_SRC_Y_OFF);
ref = prev + xoff + yoff * stride;
if (ref < ref_start || ref > ref_end) {
- av_log(avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
+ av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
bx*8 + xoff, by*8 + yoff);
return -1;
}
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
c->dsp.clear_block(block);
- v = get_bits(&gb, 7);
- read_residue(&gb, block, v);
+ v = get_bits(gb, 7);
+ read_residue(gb, block, v);
c->dsp.add_pixels8(dst, block, stride);
break;
case INTRA_BLOCK:
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTRA_DC);
- read_dct_coeffs(&gb, block, c->scantable.permutated, 1);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 1);
c->dsp.idct_put(dst, stride, block);
break;
case FILL_BLOCK:
@@ -889,7 +865,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
c->dsp.clear_block(block);
block[0] = get_value(c, BINK_SRC_INTER_DC);
- read_dct_coeffs(&gb, block, c->scantable.permutated, 0);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 0);
c->dsp.idct_add(dst, stride, block);
break;
case PATTERN_BLOCK:
@@ -907,13 +883,49 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
c->bundle[BINK_SRC_COLORS].cur_ptr += 64;
break;
default:
- av_log(avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
+ av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
return -1;
}
}
}
- if (get_bits_count(&gb) & 0x1F) //next plane data starts at 32-bit boundary
- skip_bits_long(&gb, 32 - (get_bits_count(&gb) & 0x1F));
+ if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
+ skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
+{
+ BinkContext * const c = avctx->priv_data;
+ GetBitContext gb;
+ int plane, plane_idx;
+ int bits_count = pkt->size << 3;
+
+ if(c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+
+ if(avctx->get_buffer(avctx, &c->pic) < 0){
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
+
+ init_get_bits(&gb, pkt->data, bits_count);
+ if (c->has_alpha) {
+ int aplane_bits = get_bits_long(&gb, 32) << 3;
+ if (aplane_bits <= 32 || (aplane_bits & 0x1F)) {
+ av_log(avctx, AV_LOG_ERROR, "Incorrect alpha plane size %d\n", aplane_bits);
+ return -1;
+ }
+ skip_bits_long(&gb, aplane_bits - 32);
+ }
+ if (c->version >= 'i')
+ skip_bits_long(&gb, 32);
+
+ for (plane = 0; plane < 3; plane++) {
+ plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
+
+ if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0)
+ return -1;
if (get_bits_count(&gb) >= bits_count)
break;
}