#include "libavutil/imgutils.h"
#include "avcodec.h"
+#include "internal.h"
#include "dsputil.h"
#include "get_bits.h"
#define FRAGMENT_PIXELS 8
-static av_cold int vp3_decode_end(AVCodecContext *avctx);
-static void vp3_decode_flush(AVCodecContext *avctx);
-
//FIXME split things out into their own arrays
typedef struct Vp3Fragment {
int16_t dc;
* VP3 specific functions
************************************************************************/
+static void vp3_decode_flush(AVCodecContext *avctx)
+{
+ Vp3DecodeContext *s = avctx->priv_data;
+
+ if (s->golden_frame.data[0]) {
+ if (s->golden_frame.data[0] == s->last_frame.data[0])
+ memset(&s->last_frame, 0, sizeof(AVFrame));
+ if (s->current_frame.data[0] == s->golden_frame.data[0])
+ memset(&s->current_frame, 0, sizeof(AVFrame));
+ ff_thread_release_buffer(avctx, &s->golden_frame);
+ }
+ if (s->last_frame.data[0]) {
+ if (s->current_frame.data[0] == s->last_frame.data[0])
+ memset(&s->current_frame, 0, sizeof(AVFrame));
+ ff_thread_release_buffer(avctx, &s->last_frame);
+ }
+ if (s->current_frame.data[0])
+ ff_thread_release_buffer(avctx, &s->current_frame);
+}
+
+static av_cold int vp3_decode_end(AVCodecContext *avctx)
+{
+ Vp3DecodeContext *s = avctx->priv_data;
+ int i;
+
+ av_free(s->superblock_coding);
+ av_free(s->all_fragments);
+ av_free(s->coded_fragment_list[0]);
+ av_free(s->dct_tokens_base);
+ av_free(s->superblock_fragments);
+ av_free(s->macroblock_coding);
+ av_free(s->motion_val[0]);
+ av_free(s->motion_val[1]);
+ av_free(s->edge_emu_buffer);
+
+ if (avctx->internal->is_copy)
+ return 0;
+
+ for (i = 0; i < 16; i++) {
+ free_vlc(&s->dc_vlc[i]);
+ free_vlc(&s->ac_vlc_1[i]);
+ free_vlc(&s->ac_vlc_2[i]);
+ free_vlc(&s->ac_vlc_3[i]);
+ free_vlc(&s->ac_vlc_4[i]);
+ }
+
+ free_vlc(&s->superblock_run_length_vlc);
+ free_vlc(&s->fragment_run_length_vlc);
+ free_vlc(&s->mode_code_vlc);
+ free_vlc(&s->motion_vector_vlc);
+
+ /* release all frames */
+ vp3_decode_flush(avctx);
+
+ return 0;
+}
+
/*
* This function sets up all of the various blocks mappings:
* superblocks <-> fragments, macroblocks <-> fragments,
case 1: // zero run
s->dct_tokens[plane][i]++;
i += (token >> 2) & 0x7f;
+ if (i > 63) {
+ av_log(s->avctx, AV_LOG_ERROR, "Coefficient index overflow\n");
+ return i;
+ }
block[perm[i]] = (token >> 9) * dequantizer[perm[i]];
i++;
break;
*/
static void vp3_draw_horiz_band(Vp3DecodeContext *s, int y)
{
- int h, cy;
- int offset[4];
+ int h, cy, i;
+ int offset[AV_NUM_DATA_POINTERS];
if (HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
int y_flipped = s->flipped_image ? s->avctx->height-y : y;
offset[0] = s->current_frame.linesize[0]*y;
offset[1] = s->current_frame.linesize[1]*cy;
offset[2] = s->current_frame.linesize[2]*cy;
- offset[3] = 0;
+ for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
+ offset[i] = 0;
emms_c();
s->avctx->draw_horiz_band(s->avctx, &s->current_frame, offset, y, 3, h);
/* 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);
+ int index;
+ index = vp3_dequant(s, s->all_fragments + i, plane, 0, block);
+ if (index > 63)
+ continue;
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)) {
+ int index = vp3_dequant(s, s->all_fragments + i, plane, 1, block);
+ if (index > 63)
+ continue;
+ if (index > 0) {
s->dsp.idct_add(
output_plane + first_pixel,
stride,
return -1;
}
-static av_cold int vp3_decode_end(AVCodecContext *avctx)
-{
- Vp3DecodeContext *s = avctx->priv_data;
- int i;
-
- av_free(s->superblock_coding);
- av_free(s->all_fragments);
- av_free(s->coded_fragment_list[0]);
- av_free(s->dct_tokens_base);
- av_free(s->superblock_fragments);
- av_free(s->macroblock_coding);
- av_free(s->motion_val[0]);
- av_free(s->motion_val[1]);
- av_free(s->edge_emu_buffer);
-
- if (avctx->is_copy) return 0;
-
- for (i = 0; i < 16; i++) {
- free_vlc(&s->dc_vlc[i]);
- free_vlc(&s->ac_vlc_1[i]);
- free_vlc(&s->ac_vlc_2[i]);
- free_vlc(&s->ac_vlc_3[i]);
- free_vlc(&s->ac_vlc_4[i]);
- }
-
- free_vlc(&s->superblock_run_length_vlc);
- free_vlc(&s->fragment_run_length_vlc);
- free_vlc(&s->mode_code_vlc);
- free_vlc(&s->motion_vector_vlc);
-
- /* release all frames */
- vp3_decode_flush(avctx);
-
- return 0;
-}
-
static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
{
Vp3DecodeContext *s = avctx->priv_data;
return 0;
}
+static int vp3_init_thread_copy(AVCodecContext *avctx)
+{
+ Vp3DecodeContext *s = avctx->priv_data;
+
+ s->superblock_coding = NULL;
+ s->all_fragments = NULL;
+ s->coded_fragment_list[0] = NULL;
+ s->dct_tokens_base = NULL;
+ s->superblock_fragments = NULL;
+ s->macroblock_coding = NULL;
+ s->motion_val[0] = NULL;
+ s->motion_val[1] = NULL;
+ s->edge_emu_buffer = NULL;
+
+ return 0;
+}
+
#if CONFIG_THEORA_DECODER
static const enum PixelFormat theora_pix_fmts[4] = {
PIX_FMT_YUV420P, PIX_FMT_NONE, PIX_FMT_YUV422P, PIX_FMT_YUV444P
return vp3_decode_init(avctx);
}
-static void vp3_decode_flush(AVCodecContext *avctx)
-{
- Vp3DecodeContext *s = avctx->priv_data;
-
- if (s->golden_frame.data[0]) {
- if (s->golden_frame.data[0] == s->last_frame.data[0])
- memset(&s->last_frame, 0, sizeof(AVFrame));
- if (s->current_frame.data[0] == s->golden_frame.data[0])
- memset(&s->current_frame, 0, sizeof(AVFrame));
- ff_thread_release_buffer(avctx, &s->golden_frame);
- }
- if (s->last_frame.data[0]) {
- if (s->current_frame.data[0] == s->last_frame.data[0])
- memset(&s->current_frame, 0, sizeof(AVFrame));
- ff_thread_release_buffer(avctx, &s->last_frame);
- }
- if (s->current_frame.data[0])
- ff_thread_release_buffer(avctx, &s->current_frame);
-}
-
-static int vp3_init_thread_copy(AVCodecContext *avctx)
-{
- Vp3DecodeContext *s = avctx->priv_data;
-
- s->superblock_coding = NULL;
- s->all_fragments = NULL;
- s->coded_fragment_list[0] = NULL;
- s->dct_tokens_base = NULL;
- s->superblock_fragments = NULL;
- s->macroblock_coding = NULL;
- s->motion_val[0] = NULL;
- s->motion_val[1] = NULL;
- s->edge_emu_buffer = NULL;
-
- return 0;
-}
-
AVCodec ff_theora_decoder = {
.name = "theora",
.type = AVMEDIA_TYPE_VIDEO,
projects / ffmpeg / blobdiff