-/**
+/*
* VP8 compatible video decoder
*
* Copyright (C) 2010 David Conrad
#include "libavutil/imgutils.h"
#include "avcodec.h"
+#include "internal.h"
#include "vp8.h"
#include "vp8data.h"
#include "rectangle.h"
# include "arm/vp8.h"
#endif
-static void vp8_decode_flush(AVCodecContext *avctx)
+static void free_buffers(VP8Context *s)
+{
+ av_freep(&s->macroblocks_base);
+ av_freep(&s->filter_strength);
+ av_freep(&s->intra4x4_pred_mode_top);
+ av_freep(&s->top_nnz);
+ av_freep(&s->edge_emu_buffer);
+ av_freep(&s->top_border);
+
+ s->macroblocks = NULL;
+}
+
+static int vp8_alloc_frame(VP8Context *s, AVFrame *f)
+{
+ int ret;
+ if ((ret = ff_thread_get_buffer(s->avctx, f)) < 0)
+ return ret;
+ if (s->num_maps_to_be_freed && !s->maps_are_invalid) {
+ f->ref_index[0] = s->segmentation_maps[--s->num_maps_to_be_freed];
+ } else if (!(f->ref_index[0] = av_mallocz(s->mb_width * s->mb_height))) {
+ ff_thread_release_buffer(s->avctx, f);
+ return AVERROR(ENOMEM);
+ }
+ return 0;
+}
+
+static void vp8_release_frame(VP8Context *s, AVFrame *f, int prefer_delayed_free, int can_direct_free)
+{
+ if (f->ref_index[0]) {
+ if (prefer_delayed_free) {
+ /* Upon a size change, we want to free the maps but other threads may still
+ * be using them, so queue them. Upon a seek, all threads are inactive so
+ * we want to cache one to prevent re-allocation in the next decoding
+ * iteration, but the rest we can free directly. */
+ int max_queued_maps = can_direct_free ? 1 : FF_ARRAY_ELEMS(s->segmentation_maps);
+ if (s->num_maps_to_be_freed < max_queued_maps) {
+ s->segmentation_maps[s->num_maps_to_be_freed++] = f->ref_index[0];
+ } else if (can_direct_free) /* vp8_decode_flush(), but our queue is full */ {
+ av_free(f->ref_index[0]);
+ } /* else: MEMLEAK (should never happen, but better that than crash) */
+ f->ref_index[0] = NULL;
+ } else /* vp8_decode_free() */ {
+ av_free(f->ref_index[0]);
+ }
+ }
+ ff_thread_release_buffer(s->avctx, f);
+}
+
+static void vp8_decode_flush_impl(AVCodecContext *avctx,
+ int prefer_delayed_free, int can_direct_free, int free_mem)
{
VP8Context *s = avctx->priv_data;
int i;
- if (!avctx->is_copy) {
+ if (!avctx->internal->is_copy) {
for (i = 0; i < 5; i++)
if (s->frames[i].data[0])
- ff_thread_release_buffer(avctx, &s->frames[i]);
+ vp8_release_frame(s, &s->frames[i], prefer_delayed_free, can_direct_free);
}
memset(s->framep, 0, sizeof(s->framep));
- av_freep(&s->macroblocks_base);
- av_freep(&s->filter_strength);
- av_freep(&s->intra4x4_pred_mode_top);
- av_freep(&s->top_nnz);
- av_freep(&s->edge_emu_buffer);
- av_freep(&s->top_border);
- av_freep(&s->segmentation_map);
+ if (free_mem) {
+ free_buffers(s);
+ s->maps_are_invalid = 1;
+ }
+}
- s->macroblocks = NULL;
+static void vp8_decode_flush(AVCodecContext *avctx)
+{
+ vp8_decode_flush_impl(avctx, 1, 1, 0);
}
static int update_dimensions(VP8Context *s, int width, int height)
if (av_image_check_size(width, height, 0, s->avctx))
return AVERROR_INVALIDDATA;
- vp8_decode_flush(s->avctx);
+ vp8_decode_flush_impl(s->avctx, 1, 0, 1);
avcodec_set_dimensions(s->avctx, width, height);
}
s->intra4x4_pred_mode_top = av_mallocz(s->mb_width*4);
s->top_nnz = av_mallocz(s->mb_width*sizeof(*s->top_nnz));
s->top_border = av_mallocz((s->mb_width+1)*sizeof(*s->top_border));
- s->segmentation_map = av_mallocz(s->mb_width*s->mb_height);
if (!s->macroblocks_base || !s->filter_strength || !s->intra4x4_pred_mode_top ||
- !s->top_nnz || !s->top_border || !s->segmentation_map)
+ !s->top_nnz || !s->top_border)
return AVERROR(ENOMEM);
s->macroblocks = s->macroblocks_base + 1;
VP56RangeCoder *c = &s->c;
int i;
- for (i = 0; i < 4; i++)
- s->lf_delta.ref[i] = vp8_rac_get_sint(c, 6);
+ for (i = 0; i < 4; i++) {
+ if (vp8_rac_get(c)) {
+ s->lf_delta.ref[i] = vp8_rac_get_uint(c, 6);
+
+ if (vp8_rac_get(c))
+ s->lf_delta.ref[i] = -s->lf_delta.ref[i];
+ }
+ }
- for (i = MODE_I4x4; i <= VP8_MVMODE_SPLIT; i++)
- s->lf_delta.mode[i] = vp8_rac_get_sint(c, 6);
+ for (i = MODE_I4x4; i <= VP8_MVMODE_SPLIT; i++) {
+ if (vp8_rac_get(c)) {
+ s->lf_delta.mode[i] = vp8_rac_get_uint(c, 6);
+
+ if (vp8_rac_get(c))
+ s->lf_delta.mode[i] = -s->lf_delta.mode[i];
+ }
+ }
}
static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size)
if (!s->macroblocks_base || /* first frame */
width != s->avctx->width || height != s->avctx->height) {
- if ((ret = update_dimensions(s, width, height) < 0))
+ if ((ret = update_dimensions(s, width, height)) < 0)
return ret;
}
AV_ZERO32(&near_mv[0]);
AV_ZERO32(&near_mv[1]);
+ AV_ZERO32(&near_mv[2]);
/* Process MB on top, left and top-left */
#define MV_EDGE_CHECK(n)\
if (s->segmentation.update_map)
*segment = vp8_rac_get_tree(c, vp8_segmentid_tree, s->prob->segmentid);
- else
+ else if (s->segmentation.enabled)
*segment = ref ? *ref : *segment;
s->segment = *segment;
* @param block destination for block coefficients
* @param probs probabilities to use when reading trees from the bitstream
* @param i initial coeff index, 0 unless a separate DC block is coded
- * @param zero_nhood the initial prediction context for number of surrounding
- * all-zero blocks (only left/top, so 0-2)
* @param qmul array holding the dc/ac dequant factor at position 0/1
* @return 0 if no coeffs were decoded
* otherwise, the index of the last coeff decoded plus one
}
#endif
+/**
+ * @param c arithmetic bitstream reader context
+ * @param block destination for block coefficients
+ * @param probs probabilities to use when reading trees from the bitstream
+ * @param i initial coeff index, 0 unless a separate DC block is coded
+ * @param zero_nhood the initial prediction context for number of surrounding
+ * all-zero blocks (only left/top, so 0-2)
+ * @param qmul array holding the dc/ac dequant factor at position 0/1
+ * @return 0 if no coeffs were decoded
+ * otherwise, the index of the last coeff decoded plus one
+ */
static av_always_inline
int decode_block_coeffs(VP56RangeCoder *c, DCTELEM block[16],
uint8_t probs[16][3][NUM_DCT_TOKENS-1],
int mb_x, int mb_y)
{
AVCodecContext *avctx = s->avctx;
- int x, y, mode, nnz, tr;
+ int x, y, mode, nnz;
+ uint32_t tr;
// for the first row, we need to run xchg_mb_border to init the top edge to 127
// otherwise, skip it if we aren't going to deblock
// from the top macroblock
if (!(!mb_y && avctx->flags & CODEC_FLAG_EMU_EDGE) &&
mb_x == s->mb_width-1) {
- tr = tr_right[-1]*0x01010101;
+ tr = tr_right[-1]*0x01010101u;
tr_right = (uint8_t *)&tr;
}
};
/**
- * Generic MC function.
+ * luma MC function
*
* @param s VP8 decoding context
- * @param luma 1 for luma (Y) planes, 0 for chroma (Cb/Cr) planes
* @param dst target buffer for block data at block position
* @param ref reference picture buffer at origin (0, 0)
* @param mv motion vector (relative to block position) to get pixel data from
}
}
+/**
+ * chroma MC function
+ *
+ * @param s VP8 decoding context
+ * @param dst1 target buffer for block data at block position (U plane)
+ * @param dst2 target buffer for block data at block position (V plane)
+ * @param ref reference picture buffer at origin (0, 0)
+ * @param mv motion vector (relative to block position) to get pixel data from
+ * @param x_off horizontal position of block from origin (0, 0)
+ * @param y_off vertical position of block from origin (0, 0)
+ * @param block_w width of block (16, 8 or 4)
+ * @param block_h height of block (always same as block_w)
+ * @param width width of src/dst plane data
+ * @param height height of src/dst plane data
+ * @param linesize size of a single line of plane data, including padding
+ * @param mc_func motion compensation function pointers (bilinear or sixtap MC)
+ */
static av_always_inline
void vp8_mc_chroma(VP8Context *s, uint8_t *dst1, uint8_t *dst2, AVFrame *ref,
const VP56mv *mv, int x_off, int y_off,
}
}
+static void release_queued_segmaps(VP8Context *s, int is_close)
+{
+ int leave_behind = is_close ? 0 : !s->maps_are_invalid;
+ while (s->num_maps_to_be_freed > leave_behind)
+ av_freep(&s->segmentation_maps[--s->num_maps_to_be_freed]);
+ s->maps_are_invalid = 0;
+}
+
static int vp8_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
VP8Context *s = avctx->priv_data;
int ret, mb_x, mb_y, i, y, referenced;
enum AVDiscard skip_thresh;
- AVFrame *av_uninit(curframe), *prev_frame = s->framep[VP56_FRAME_CURRENT];
+ AVFrame *av_uninit(curframe), *prev_frame;
+
+ release_queued_segmaps(s, 0);
if ((ret = decode_frame_header(s, avpkt->data, avpkt->size)) < 0)
- return ret;
+ goto err;
+
+ prev_frame = s->framep[VP56_FRAME_CURRENT];
referenced = s->update_last || s->update_golden == VP56_FRAME_CURRENT
|| s->update_altref == VP56_FRAME_CURRENT;
if (avctx->skip_frame >= skip_thresh) {
s->invisible = 1;
+ memcpy(&s->next_framep[0], &s->framep[0], sizeof(s->framep[0]) * 4);
goto skip_decode;
}
s->deblock_filter = s->filter.level && avctx->skip_loop_filter < skip_thresh;
&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] &&
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN] &&
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN2])
- ff_thread_release_buffer(avctx, &s->frames[i]);
+ vp8_release_frame(s, &s->frames[i], 1, 0);
// find a free buffer
for (i = 0; i < 5; i++)
abort();
}
if (curframe->data[0])
- ff_thread_release_buffer(avctx, curframe);
+ vp8_release_frame(s, curframe, 1, 0);
+
+ // Given that arithmetic probabilities are updated every frame, it's quite likely
+ // that the values we have on a random interframe are complete junk if we didn't
+ // start decode on a keyframe. So just don't display anything rather than junk.
+ if (!s->keyframe && (!s->framep[VP56_FRAME_PREVIOUS] ||
+ !s->framep[VP56_FRAME_GOLDEN] ||
+ !s->framep[VP56_FRAME_GOLDEN2])) {
+ av_log(avctx, AV_LOG_WARNING, "Discarding interframe without a prior keyframe!\n");
+ ret = AVERROR_INVALIDDATA;
+ goto err;
+ }
curframe->key_frame = s->keyframe;
curframe->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
curframe->reference = referenced ? 3 : 0;
- curframe->ref_index[0] = s->segmentation_map;
- if ((ret = ff_thread_get_buffer(avctx, curframe))) {
+ if ((ret = vp8_alloc_frame(s, curframe))) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed!\n");
- return ret;
+ goto err;
}
// check if golden and altref are swapped
ff_thread_finish_setup(avctx);
- // Given that arithmetic probabilities are updated every frame, it's quite likely
- // that the values we have on a random interframe are complete junk if we didn't
- // start decode on a keyframe. So just don't display anything rather than junk.
- if (!s->keyframe && (!s->framep[VP56_FRAME_PREVIOUS] ||
- !s->framep[VP56_FRAME_GOLDEN] ||
- !s->framep[VP56_FRAME_GOLDEN2])) {
- av_log(avctx, AV_LOG_WARNING, "Discarding interframe without a prior keyframe!\n");
- return AVERROR_INVALIDDATA;
- }
-
s->linesize = curframe->linesize[0];
s->uvlinesize = curframe->linesize[1];
s->dsp.prefetch(dst[0] + (mb_x&3)*4*s->linesize + 64, s->linesize, 4);
s->dsp.prefetch(dst[1] + (mb_x&7)*s->uvlinesize + 64, dst[2] - dst[1], 2);
- decode_mb_mode(s, mb, mb_x, mb_y, s->segmentation_map + mb_xy,
- prev_frame ? prev_frame->ref_index[0] + mb_xy : NULL);
+ decode_mb_mode(s, mb, mb_x, mb_y, curframe->ref_index[0] + mb_xy,
+ prev_frame && prev_frame->ref_index[0] ? prev_frame->ref_index[0] + mb_xy : NULL);
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_PREVIOUS);
}
ff_thread_report_progress(curframe, INT_MAX, 0);
+ memcpy(&s->framep[0], &s->next_framep[0], sizeof(s->framep[0]) * 4);
+
skip_decode:
// if future frames don't use the updated probabilities,
// reset them to the values we saved
if (!s->update_probabilities)
s->prob[0] = s->prob[1];
- memcpy(&s->framep[0], &s->next_framep[0], sizeof(s->framep[0]) * 4);
-
if (!s->invisible) {
*(AVFrame*)data = *curframe;
*data_size = sizeof(AVFrame);
}
return avpkt->size;
+err:
+ memcpy(&s->next_framep[0], &s->framep[0], sizeof(s->framep[0]) * 4);
+ return ret;
}
static av_cold int vp8_decode_init(AVCodecContext *avctx)
s->avctx = avctx;
avctx->pix_fmt = PIX_FMT_YUV420P;
- dsputil_init(&s->dsp, avctx);
- ff_h264_pred_init(&s->hpc, CODEC_ID_VP8, 8);
+ ff_dsputil_init(&s->dsp, avctx);
+ ff_h264_pred_init(&s->hpc, CODEC_ID_VP8, 8, 1);
ff_vp8dsp_init(&s->vp8dsp);
return 0;
static av_cold int vp8_decode_free(AVCodecContext *avctx)
{
- vp8_decode_flush(avctx);
+ vp8_decode_flush_impl(avctx, 0, 1, 1);
+ release_queued_segmaps(avctx->priv_data, 1);
return 0;
}
{
VP8Context *s = dst->priv_data, *s_src = src->priv_data;
+ if (s->macroblocks_base &&
+ (s_src->mb_width != s->mb_width || s_src->mb_height != s->mb_height)) {
+ free_buffers(s);
+ s->maps_are_invalid = 1;
+ s->mb_width = s_src->mb_width;
+ s->mb_height = s_src->mb_height;
+ }
+
s->prob[0] = s_src->prob[!s_src->update_probabilities];
s->segmentation = s_src->segmentation;
s->lf_delta = s_src->lf_delta;
}
AVCodec ff_vp8_decoder = {
- "vp8",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_VP8,
- sizeof(VP8Context),
- vp8_decode_init,
- NULL,
- vp8_decode_free,
- vp8_decode_frame,
- CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
- .flush = vp8_decode_flush,
- .long_name = NULL_IF_CONFIG_SMALL("On2 VP8"),
+ .name = "vp8",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_VP8,
+ .priv_data_size = sizeof(VP8Context),
+ .init = vp8_decode_init,
+ .close = vp8_decode_free,
+ .decode = vp8_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
+ .flush = vp8_decode_flush,
+ .long_name = NULL_IF_CONFIG_SMALL("On2 VP8"),
.init_thread_copy = ONLY_IF_THREADS_ENABLED(vp8_decode_init_thread_copy),
.update_thread_context = ONLY_IF_THREADS_ENABLED(vp8_decode_update_thread_context),
};
projects / ffmpeg / blobdiff