*/
/**
- * @file libavcodec/vp3.c
+ * @file
* On2 VP3 Video Decoder
*
* VP3 Video Decoder by Mike Melanson (mike at multimedia.cx)
DSPContext dsp;
int flipped_image;
int last_slice_end;
+ int skip_loop_filter;
int qps[3];
int nqps;
unsigned int hbits;
int entries;
int huff_code_size;
- uint16_t huffman_table[80][32][2];
+ uint32_t huffman_table[80][32][2];
uint8_t filter_limit_values[64];
DECLARE_ALIGNED(8, int, bounding_values_array)[256+2];
* superblocks <-> fragments, macroblocks <-> fragments,
* superblocks <-> macroblocks
*
- * Returns 0 is successful; returns 1 if *anything* went wrong.
+ * @return 0 is successful; returns 1 if *anything* went wrong.
*/
static int init_block_mapping(Vp3DecodeContext *s)
{
} else {
/* unpack the list of partially-coded superblocks */
- bit = get_bits1(gb);
+ bit = get_bits1(gb) ^ 1;
+ current_run = 0;
+
while (current_superblock < s->superblock_count && get_bits_left(gb) > 0) {
+ if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
+ bit = get_bits1(gb);
+ else
+ bit ^= 1;
+
current_run = get_vlc2(gb,
s->superblock_run_length_vlc.table, 6, 2) + 1;
if (current_run == 34)
current_superblock += current_run;
if (bit)
num_partial_superblocks += current_run;
-
- if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
- bit = get_bits1(gb);
- else
- bit ^= 1;
}
/* unpack the list of fully coded superblocks if any of the blocks were
int superblocks_decoded = 0;
current_superblock = 0;
- bit = get_bits1(gb);
+ bit = get_bits1(gb) ^ 1;
+ current_run = 0;
+
while (superblocks_decoded < s->superblock_count - num_partial_superblocks
&& get_bits_left(gb) > 0) {
+
+ if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
+ bit = get_bits1(gb);
+ else
+ bit ^= 1;
+
current_run = get_vlc2(gb,
s->superblock_run_length_vlc.table, 6, 2) + 1;
if (current_run == 34)
}
}
superblocks_decoded += current_run;
-
- if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
- bit = get_bits1(gb);
- else
- bit ^= 1;
}
}
for (qpi = 0; qpi < s->nqps-1 && num_blocks > 0; qpi++) {
i = blocks_decoded = num_blocks_at_qpi = 0;
- bit = get_bits1(gb);
+ bit = get_bits1(gb) ^ 1;
+ run_length = 0;
do {
+ if (run_length == MAXIMUM_LONG_BIT_RUN)
+ bit = get_bits1(gb);
+ else
+ bit ^= 1;
+
run_length = get_vlc2(gb, s->superblock_run_length_vlc.table, 6, 2) + 1;
if (run_length == 34)
run_length += get_bits(gb, 12);
j++;
}
}
-
- if (run_length == MAXIMUM_LONG_BIT_RUN)
- bit = get_bits1(gb);
- else
- bit ^= 1;
} while (blocks_decoded < num_blocks && get_bits_left(gb) > 0);
num_blocks -= num_blocks_at_qpi;
while (coeff_i < num_coeffs && get_bits_left(gb) > 0) {
/* decode a VLC into a token */
- token = get_vlc2(gb, vlc_table, 5, 3);
+ token = get_vlc2(gb, vlc_table, 11, 3);
/* use the token to get a zero run, a coefficient, and an eob run */
if (token <= 6) {
eob_run = eob_run_base[token];
}
/**
- * Pulls DCT tokens from the 64 levels to decode and dequant the coefficients
+ * Pull DCT tokens from the 64 levels to decode and dequant the coefficients
* for the next block in coding order
*/
static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
y = s->height - y - h;
}
- cy = y >> 1;
+ cy = y >> s->chroma_y_shift;
offset[0] = s->current_frame.linesize[0]*y;
offset[1] = s->current_frame.linesize[1]*cy;
offset[2] = s->current_frame.linesize[2]*cy;
/* transform if this block was coded */
if (s->all_fragments[i].coding_method != MODE_COPY) {
- int intra = s->all_fragments[i].coding_method == MODE_INTRA;
-
if ((s->all_fragments[i].coding_method == MODE_USING_GOLDEN) ||
(s->all_fragments[i].coding_method == MODE_GOLDEN_MV))
motion_source= golden_plane;
}
s->dsp.clear_block(block);
- vp3_dequant(s, s->all_fragments + i, plane, !intra, block);
/* invert DCT and place (or add) in final output */
if (s->all_fragments[i].coding_method == MODE_INTRA) {
+ vp3_dequant(s, s->all_fragments + i, plane, 0, block);
if(s->avctx->idct_algo!=FF_IDCT_VP3)
block[0] += 128<<3;
s->dsp.idct_put(
stride,
block);
} else {
+ if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) {
s->dsp.idct_add(
output_plane + first_pixel,
stride,
block);
+ } else {
+ s->dsp.vp3_idct_dc_add(output_plane + first_pixel, stride, block);
+ }
}
} else {
}
// Filter up to the last row in the superblock row
- apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1));
+ if (!s->skip_loop_filter)
+ apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1));
}
}
for (i = 0; i < 16; i++) {
/* DC histograms */
- init_vlc(&s->dc_vlc[i], 5, 32,
+ init_vlc(&s->dc_vlc[i], 11, 32,
&dc_bias[i][0][1], 4, 2,
&dc_bias[i][0][0], 4, 2, 0);
/* group 1 AC histograms */
- init_vlc(&s->ac_vlc_1[i], 5, 32,
+ init_vlc(&s->ac_vlc_1[i], 11, 32,
&ac_bias_0[i][0][1], 4, 2,
&ac_bias_0[i][0][0], 4, 2, 0);
/* group 2 AC histograms */
- init_vlc(&s->ac_vlc_2[i], 5, 32,
+ init_vlc(&s->ac_vlc_2[i], 11, 32,
&ac_bias_1[i][0][1], 4, 2,
&ac_bias_1[i][0][0], 4, 2, 0);
/* group 3 AC histograms */
- init_vlc(&s->ac_vlc_3[i], 5, 32,
+ init_vlc(&s->ac_vlc_3[i], 11, 32,
&ac_bias_2[i][0][1], 4, 2,
&ac_bias_2[i][0][0], 4, 2, 0);
/* group 4 AC histograms */
- init_vlc(&s->ac_vlc_4[i], 5, 32,
+ init_vlc(&s->ac_vlc_4[i], 11, 32,
&ac_bias_3[i][0][1], 4, 2,
&ac_bias_3[i][0][0], 4, 2, 0);
}
} else {
- for (i = 0; i < 16; i++) {
+ for (i = 0; i < 16; i++) {
/* DC histograms */
- if (init_vlc(&s->dc_vlc[i], 5, 32,
- &s->huffman_table[i][0][1], 4, 2,
- &s->huffman_table[i][0][0], 4, 2, 0) < 0)
+ if (init_vlc(&s->dc_vlc[i], 11, 32,
+ &s->huffman_table[i][0][1], 8, 4,
+ &s->huffman_table[i][0][0], 8, 4, 0) < 0)
goto vlc_fail;
/* group 1 AC histograms */
- if (init_vlc(&s->ac_vlc_1[i], 5, 32,
- &s->huffman_table[i+16][0][1], 4, 2,
- &s->huffman_table[i+16][0][0], 4, 2, 0) < 0)
+ if (init_vlc(&s->ac_vlc_1[i], 11, 32,
+ &s->huffman_table[i+16][0][1], 8, 4,
+ &s->huffman_table[i+16][0][0], 8, 4, 0) < 0)
goto vlc_fail;
/* group 2 AC histograms */
- if (init_vlc(&s->ac_vlc_2[i], 5, 32,
- &s->huffman_table[i+16*2][0][1], 4, 2,
- &s->huffman_table[i+16*2][0][0], 4, 2, 0) < 0)
+ if (init_vlc(&s->ac_vlc_2[i], 11, 32,
+ &s->huffman_table[i+16*2][0][1], 8, 4,
+ &s->huffman_table[i+16*2][0][0], 8, 4, 0) < 0)
goto vlc_fail;
/* group 3 AC histograms */
- if (init_vlc(&s->ac_vlc_3[i], 5, 32,
- &s->huffman_table[i+16*3][0][1], 4, 2,
- &s->huffman_table[i+16*3][0][0], 4, 2, 0) < 0)
+ if (init_vlc(&s->ac_vlc_3[i], 11, 32,
+ &s->huffman_table[i+16*3][0][1], 8, 4,
+ &s->huffman_table[i+16*3][0][0], 8, 4, 0) < 0)
goto vlc_fail;
/* group 4 AC histograms */
- if (init_vlc(&s->ac_vlc_4[i], 5, 32,
- &s->huffman_table[i+16*4][0][1], 4, 2,
- &s->huffman_table[i+16*4][0][0], 4, 2, 0) < 0)
+ if (init_vlc(&s->ac_vlc_4[i], 11, 32,
+ &s->huffman_table[i+16*4][0][1], 8, 4,
+ &s->huffman_table[i+16*4][0][0], 8, 4, 0) < 0)
goto vlc_fail;
}
}
s->keyframe?"key":"", counter, s->qps[0]);
counter++;
+ s->skip_loop_filter = !s->filter_limit_values[s->qps[0]] ||
+ avctx->skip_loop_filter >= (s->keyframe ? AVDISCARD_ALL : AVDISCARD_NONKEY);
+
if (s->qps[0] != s->last_qps[0])
init_loop_filter(s);
{
Vp3DecodeContext *s = avctx->priv_data;
int visible_width, visible_height, colorspace;
+ int offset_x = 0, offset_y = 0;
+ AVRational fps;
s->theora = get_bits_long(gb, 24);
av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora);
visible_width = get_bits_long(gb, 24);
visible_height = get_bits_long(gb, 24);
- skip_bits(gb, 8); /* offset x */
- skip_bits(gb, 8); /* offset y */
+ offset_x = get_bits(gb, 8); /* offset x */
+ offset_y = get_bits(gb, 8); /* offset y, from bottom */
+ }
+
+ fps.num = get_bits_long(gb, 32);
+ fps.den = get_bits_long(gb, 32);
+ if (fps.num && fps.den) {
+ av_reduce(&avctx->time_base.num, &avctx->time_base.den,
+ fps.den, fps.num, 1<<30);
}
- skip_bits(gb, 32); /* fps numerator */
- skip_bits(gb, 32); /* fps denumerator */
- skip_bits(gb, 24); /* aspect numerator */
- skip_bits(gb, 24); /* aspect denumerator */
+ avctx->sample_aspect_ratio.num = get_bits_long(gb, 24);
+ avctx->sample_aspect_ratio.den = get_bits_long(gb, 24);
if (s->theora < 0x030200)
skip_bits(gb, 5); /* keyframe frequency force */
// align_get_bits(gb);
if ( visible_width <= s->width && visible_width > s->width-16
- && visible_height <= s->height && visible_height > s->height-16)
+ && visible_height <= s->height && visible_height > s->height-16
+ && !offset_x && (offset_y == s->height - visible_height))
avcodec_set_dimensions(avctx, visible_width, visible_height);
else
avcodec_set_dimensions(avctx, s->width, s->height);
projects / ffmpeg / blobdiff