static vpx_image_t *vp8_get_frame(vpx_codec_alg_priv_t *ctx,
vpx_codec_iter_t *iter)
{
vpx_image_t *img = NULL;
/* iter acts as a flip flop, so an image is only returned on the first
* call to get_frame.
*/
if (!(*iter) && ctx->yv12_frame_buffers.pbi[0])
{
YV12_BUFFER_CONFIG sd;
int64_t time_stamp = 0, time_end_stamp = 0;
vp8_ppflags_t flags = {0};
if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
{
flags.post_proc_flag= ctx->postproc_cfg.post_proc_flag
#if CONFIG_POSTPROC_VISUALIZER
| ((ctx->dbg_color_ref_frame_flag != 0) ? VP8D_DEBUG_CLR_FRM_REF_BLKS : 0)
| ((ctx->dbg_color_mb_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
| ((ctx->dbg_color_b_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
| ((ctx->dbg_display_mv_flag != 0) ? VP8D_DEBUG_DRAW_MV : 0)
#endif
;
flags.deblocking_level = ctx->postproc_cfg.deblocking_level;
flags.noise_level = ctx->postproc_cfg.noise_level;
#if CONFIG_POSTPROC_VISUALIZER
flags.display_ref_frame_flag= ctx->dbg_color_ref_frame_flag;
flags.display_mb_modes_flag = ctx->dbg_color_mb_modes_flag;
flags.display_b_modes_flag = ctx->dbg_color_b_modes_flag;
flags.display_mv_flag = ctx->dbg_display_mv_flag;
#endif
}
if (0 == vp8dx_get_raw_frame(ctx->yv12_frame_buffers.pbi[0], &sd,
&time_stamp, &time_end_stamp, &flags))
{
yuvconfig2image(&ctx->img, &sd, ctx->user_priv);
img = &ctx->img;
*iter = img;
}
}
return img;
}
static vpx_codec_err_t vp8_decode(vpx_codec_alg_priv_t *ctx,
const uint8_t *data,
unsigned int data_sz,
void *user_priv,
long deadline)
{
vpx_codec_err_t res = VPX_CODEC_OK;
ctx->img_avail = 0;
/* Determine the stream parameters. Note that we rely on peek_si to
* validate that we have a buffer that does not wrap around the top
* of the heap.
*/
if (!ctx->si.h)
res = ctx->base.iface->dec.peek_si(data, data_sz, &ctx->si);
/* Perform deferred allocations, if required */
if (!res && ctx->defer_alloc)
{
int i;
for (i = 1; !res && i < NELEMENTS(ctx->mmaps); i++)
{
vpx_codec_dec_cfg_t cfg;
cfg.w = ctx->si.w;
cfg.h = ctx->si.h;
ctx->mmaps[i].id = vp8_mem_req_segs[i].id;
ctx->mmaps[i].sz = vp8_mem_req_segs[i].sz;
ctx->mmaps[i].align = vp8_mem_req_segs[i].align;
ctx->mmaps[i].flags = vp8_mem_req_segs[i].flags;
if (!ctx->mmaps[i].sz)
ctx->mmaps[i].sz = vp8_mem_req_segs[i].calc_sz(&cfg,
ctx->base.init_flags);
res = vp8_mmap_alloc(&ctx->mmaps[i]);
}
if (!res)
vp8_finalize_mmaps(ctx);
ctx->defer_alloc = 0;
}
/* Initialize the decoder instance on the first frame*/
if (!res && !ctx->decoder_init)
{
res = vp8_validate_mmaps(&ctx->si, ctx->mmaps, ctx->base.init_flags);
if (!res)
{
VP8D_CONFIG oxcf;
VP8D_PTR optr;
vp8dx_initialize();
oxcf.Width = ctx->si.w;
oxcf.Height = ctx->si.h;
oxcf.Version = 9;
oxcf.postprocess = 0;
oxcf.max_threads = ctx->cfg.threads;
optr = vp8dx_create_decompressor(&oxcf);
/* If postprocessing was enabled by the application and a
* configuration has not been provided, default it.
*/
if (!ctx->postproc_cfg_set
&& (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
{
ctx->postproc_cfg.post_proc_flag =
VP8_DEBLOCK | VP8_DEMACROBLOCK;
ctx->postproc_cfg.deblocking_level = 4;
ctx->postproc_cfg.noise_level = 0;
}
if (!optr)
res = VPX_CODEC_ERROR;
else
ctx->pbi = optr;
}
ctx->decoder_init = 1;
}
if (!res && ctx->pbi)
{
YV12_BUFFER_CONFIG sd;
INT64 time_stamp = 0, time_end_stamp = 0;
vp8_ppflags_t flags = {0};
if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
{
flags.post_proc_flag= ctx->postproc_cfg.post_proc_flag
#if CONFIG_POSTPROC_VISUALIZER
| ((ctx->dbg_color_ref_frame_flag != 0) ? VP8D_DEBUG_CLR_FRM_REF_BLKS : 0)
| ((ctx->dbg_color_mb_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
| ((ctx->dbg_color_b_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
| ((ctx->dbg_display_mv_flag != 0) ? VP8D_DEBUG_DRAW_MV : 0)
#endif
;
flags.deblocking_level = ctx->postproc_cfg.deblocking_level;
flags.noise_level = ctx->postproc_cfg.noise_level;
#if CONFIG_POSTPROC_VISUALIZER
flags.display_ref_frame_flag= ctx->dbg_color_ref_frame_flag;
flags.display_mb_modes_flag = ctx->dbg_color_mb_modes_flag;
flags.display_b_modes_flag = ctx->dbg_color_b_modes_flag;
flags.display_mv_flag = ctx->dbg_display_mv_flag;
#endif
}
if (vp8dx_receive_compressed_data(ctx->pbi, data_sz, data, deadline))
{
VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
res = update_error_state(ctx, &pbi->common.error);
}
if (!res && 0 == vp8dx_get_raw_frame(ctx->pbi, &sd, &time_stamp, &time_end_stamp, &flags))
{
/* Align width/height */
unsigned int a_w = (sd.y_width + 15) & ~15;
unsigned int a_h = (sd.y_height + 15) & ~15;
vpx_img_wrap(&ctx->img, VPX_IMG_FMT_I420,
a_w + 2 * VP8BORDERINPIXELS,
a_h + 2 * VP8BORDERINPIXELS,
1,
sd.buffer_alloc);
vpx_img_set_rect(&ctx->img,
VP8BORDERINPIXELS, VP8BORDERINPIXELS,
sd.y_width, sd.y_height);
ctx->img.user_priv = user_priv;
ctx->img_avail = 1;
}
}
return res;
}
