The Tor Browser: media/libvpx/vp8/decoder/onyxd

media/libvpx/vp8/decoder/onyxd_if.c@b8a032363ba2 (annotated)

media/libvpx/vp8/decoder/onyxd_if.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include "vp8/common/onyxc_int.h"
 #if CONFIG_POSTPROC
 #include "vp8/common/postproc.h"
 #endif
 #include "vp8/common/onyxd.h"
 #include "onyxd_int.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vp8/common/alloccommon.h"
 #include "vp8/common/loopfilter.h"
 #include "vp8/common/swapyv12buffer.h"
 #include "vp8/common/threading.h"
 #include "decoderthreading.h"
 #include <stdio.h>
 #include <assert.h>
 #include "vp8/common/quant_common.h"
 #include "./vpx_scale_rtcd.h"
 #include "vpx_scale/vpx_scale.h"
 #include "vp8/common/systemdependent.h"
 #include "vpx_ports/vpx_timer.h"
 #include "detokenize.h"
 #if CONFIG_ERROR_CONCEALMENT
 #include "error_concealment.h"
 #endif
 #if ARCH_ARM
 #include "vpx_ports/arm.h"
 #endif
 extern void vp8_init_loop_filter(VP8_COMMON *cm);
 extern void vp8cx_init_de_quantizer(VP8D_COMP *pbi);
 static int get_free_fb (VP8_COMMON *cm);
 static void ref_cnt_fb (int *buf, int *idx, int new_idx);
 static void remove_decompressor(VP8D_COMP *pbi)
 {
 #if CONFIG_ERROR_CONCEALMENT
     vp8_de_alloc_overlap_lists(pbi);
 #endif
     vp8_remove_common(&pbi->common);
     vpx_free(pbi);
 }
 static struct VP8D_COMP * create_decompressor(VP8D_CONFIG *oxcf)
 {
     VP8D_COMP *pbi = vpx_memalign(32, sizeof(VP8D_COMP));
     if (!pbi)
         return NULL;
     vpx_memset(pbi, 0, sizeof(VP8D_COMP));
     if (setjmp(pbi->common.error.jmp))
     {
         pbi->common.error.setjmp = 0;
         remove_decompressor(pbi);
         return 0;
     }
     pbi->common.error.setjmp = 1;
     vp8_create_common(&pbi->common);
     pbi->common.current_video_frame = 0;
     pbi->ready_for_new_data = 1;
     /* vp8cx_init_de_quantizer() is first called here. Add check in frame_init_dequantizer() to avoid
      *  unnecessary calling of vp8cx_init_de_quantizer() for every frame.
      */
     vp8cx_init_de_quantizer(pbi);
     vp8_loop_filter_init(&pbi->common);
     pbi->common.error.setjmp = 0;
 #if CONFIG_ERROR_CONCEALMENT
     pbi->ec_enabled = oxcf->error_concealment;
     pbi->overlaps = NULL;
 #else
     pbi->ec_enabled = 0;
 #endif
     /* Error concealment is activated after a key frame has been
      * decoded without errors when error concealment is enabled.
      */
     pbi->ec_active = 0;
     pbi->decoded_key_frame = 0;
     /* Independent partitions is activated when a frame updates the
      * token probability table to have equal probabilities over the
      * PREV_COEF context.
      */
     pbi->independent_partitions = 0;
     vp8_setup_block_dptrs(&pbi->mb);
     return pbi;
 }
 vpx_codec_err_t vp8dx_get_reference(VP8D_COMP *pbi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
 {
     VP8_COMMON *cm = &pbi->common;
     int ref_fb_idx;
     if (ref_frame_flag == VP8_LAST_FRAME)
         ref_fb_idx = cm->lst_fb_idx;
     else if (ref_frame_flag == VP8_GOLD_FRAME)
         ref_fb_idx = cm->gld_fb_idx;
     else if (ref_frame_flag == VP8_ALTR_FRAME)
         ref_fb_idx = cm->alt_fb_idx;
     else{
         vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
             "Invalid reference frame");
         return pbi->common.error.error_code;
     }
     if(cm->yv12_fb[ref_fb_idx].y_height != sd->y_height ||
         cm->yv12_fb[ref_fb_idx].y_width != sd->y_width ||
         cm->yv12_fb[ref_fb_idx].uv_height != sd->uv_height ||
         cm->yv12_fb[ref_fb_idx].uv_width != sd->uv_width){
         vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
             "Incorrect buffer dimensions");
     }
     else
         vp8_yv12_copy_frame(&cm->yv12_fb[ref_fb_idx], sd);
     return pbi->common.error.error_code;
 }
 vpx_codec_err_t vp8dx_set_reference(VP8D_COMP *pbi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
 {
     VP8_COMMON *cm = &pbi->common;
     int *ref_fb_ptr = NULL;
     int free_fb;
     if (ref_frame_flag == VP8_LAST_FRAME)
         ref_fb_ptr = &cm->lst_fb_idx;
     else if (ref_frame_flag == VP8_GOLD_FRAME)
         ref_fb_ptr = &cm->gld_fb_idx;
     else if (ref_frame_flag == VP8_ALTR_FRAME)
         ref_fb_ptr = &cm->alt_fb_idx;
     else{
         vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
             "Invalid reference frame");
         return pbi->common.error.error_code;
     }
     if(cm->yv12_fb[*ref_fb_ptr].y_height != sd->y_height ||
         cm->yv12_fb[*ref_fb_ptr].y_width != sd->y_width ||
         cm->yv12_fb[*ref_fb_ptr].uv_height != sd->uv_height ||
         cm->yv12_fb[*ref_fb_ptr].uv_width != sd->uv_width){
         vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
             "Incorrect buffer dimensions");
     }
     else{
         /* Find an empty frame buffer. */
         free_fb = get_free_fb(cm);
         /* Decrease fb_idx_ref_cnt since it will be increased again in
          * ref_cnt_fb() below. */
         cm->fb_idx_ref_cnt[free_fb]--;
         /* Manage the reference counters and copy image. */
         ref_cnt_fb (cm->fb_idx_ref_cnt, ref_fb_ptr, free_fb);
         vp8_yv12_copy_frame(sd, &cm->yv12_fb[*ref_fb_ptr]);
     }
    return pbi->common.error.error_code;
 }
 /*For ARM NEON, d8-d15 are callee-saved registers, and need to be saved by us.*/
 #if HAVE_NEON
 extern void vp8_push_neon(int64_t *store);
 extern void vp8_pop_neon(int64_t *store);
 #endif
 static int get_free_fb (VP8_COMMON *cm)
 {
     int i;
     for (i = 0; i < NUM_YV12_BUFFERS; i++)
         if (cm->fb_idx_ref_cnt[i] == 0)
             break;
     assert(i < NUM_YV12_BUFFERS);
     cm->fb_idx_ref_cnt[i] = 1;
     return i;
 }
 static void ref_cnt_fb (int *buf, int *idx, int new_idx)
 {
     if (buf[*idx] > 0)
         buf[*idx]--;
     *idx = new_idx;
     buf[new_idx]++;
 }
 /* If any buffer copy / swapping is signalled it should be done here. */
 static int swap_frame_buffers (VP8_COMMON *cm)
 {
     int err = 0;
     /* The alternate reference frame or golden frame can be updated
      *  using the new, last, or golden/alt ref frame.  If it
      *  is updated using the newly decoded frame it is a refresh.
      *  An update using the last or golden/alt ref frame is a copy.
      */
     if (cm->copy_buffer_to_arf)
     {
         int new_fb = 0;
         if (cm->copy_buffer_to_arf == 1)
             new_fb = cm->lst_fb_idx;
         else if (cm->copy_buffer_to_arf == 2)
             new_fb = cm->gld_fb_idx;
         else
             err = -1;
         ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->alt_fb_idx, new_fb);
     }
     if (cm->copy_buffer_to_gf)
     {
         int new_fb = 0;
         if (cm->copy_buffer_to_gf == 1)
             new_fb = cm->lst_fb_idx;
         else if (cm->copy_buffer_to_gf == 2)
             new_fb = cm->alt_fb_idx;
         else
             err = -1;
         ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->gld_fb_idx, new_fb);
     }
     if (cm->refresh_golden_frame)
         ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->gld_fb_idx, cm->new_fb_idx);
     if (cm->refresh_alt_ref_frame)
         ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->alt_fb_idx, cm->new_fb_idx);
     if (cm->refresh_last_frame)
     {
         ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->lst_fb_idx, cm->new_fb_idx);
         cm->frame_to_show = &cm->yv12_fb[cm->lst_fb_idx];
     }
     else
         cm->frame_to_show = &cm->yv12_fb[cm->new_fb_idx];
     cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
     return err;
 }
 int check_fragments_for_errors(VP8D_COMP *pbi)
 {
     if (!pbi->ec_active &&
         pbi->fragments.count <= 1 && pbi->fragments.sizes[0] == 0)
     {
         VP8_COMMON *cm = &pbi->common;
         /* If error concealment is disabled we won't signal missing frames
          * to the decoder.
          */
         if (cm->fb_idx_ref_cnt[cm->lst_fb_idx] > 1)
         {
             /* The last reference shares buffer with another reference
              * buffer. Move it to its own buffer before setting it as
              * corrupt, otherwise we will make multiple buffers corrupt.
              */
             const int prev_idx = cm->lst_fb_idx;
             cm->fb_idx_ref_cnt[prev_idx]--;
             cm->lst_fb_idx = get_free_fb(cm);
             vp8_yv12_copy_frame(&cm->yv12_fb[prev_idx],
                                     &cm->yv12_fb[cm->lst_fb_idx]);
         }
         /* This is used to signal that we are missing frames.
          * We do not know if the missing frame(s) was supposed to update
          * any of the reference buffers, but we act conservative and
          * mark only the last buffer as corrupted.
          */
         cm->yv12_fb[cm->lst_fb_idx].corrupted = 1;
         /* Signal that we have no frame to show. */
         cm->show_frame = 0;
         /* Nothing more to do. */
         return 0;
     }
     return 1;
 }
 int vp8dx_receive_compressed_data(VP8D_COMP *pbi, size_t size,
                                   const uint8_t *source,
                                   int64_t time_stamp)
 {
 #if HAVE_NEON
     int64_t dx_store_reg[8];
 #endif
     VP8_COMMON *cm = &pbi->common;
     int retcode = -1;
     pbi->common.error.error_code = VPX_CODEC_OK;
     retcode = check_fragments_for_errors(pbi);
     if(retcode <= 0)
         return retcode;
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_push_neon(dx_store_reg);
     }
 #endif
     cm->new_fb_idx = get_free_fb (cm);
     /* setup reference frames for vp8_decode_frame */
     pbi->dec_fb_ref[INTRA_FRAME]  = &cm->yv12_fb[cm->new_fb_idx];
     pbi->dec_fb_ref[LAST_FRAME]   = &cm->yv12_fb[cm->lst_fb_idx];
     pbi->dec_fb_ref[GOLDEN_FRAME] = &cm->yv12_fb[cm->gld_fb_idx];
     pbi->dec_fb_ref[ALTREF_FRAME] = &cm->yv12_fb[cm->alt_fb_idx];
     if (setjmp(pbi->common.error.jmp))
     {
        /* We do not know if the missing frame(s) was supposed to update
         * any of the reference buffers, but we act conservative and
         * mark only the last buffer as corrupted.
         */
         cm->yv12_fb[cm->lst_fb_idx].corrupted = 1;
         if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
           cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
         goto decode_exit;
     }
     pbi->common.error.setjmp = 1;
     retcode = vp8_decode_frame(pbi);
     if (retcode < 0)
     {
         if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
           cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
         pbi->common.error.error_code = VPX_CODEC_ERROR;
         goto decode_exit;
     }
     if (swap_frame_buffers (cm))
     {
         pbi->common.error.error_code = VPX_CODEC_ERROR;
         goto decode_exit;
     }
     vp8_clear_system_state();
     if (cm->show_frame)
     {
         cm->current_video_frame++;
         cm->show_frame_mi = cm->mi;
     }
     #if CONFIG_ERROR_CONCEALMENT
     /* swap the mode infos to storage for future error concealment */
     if (pbi->ec_enabled && pbi->common.prev_mi)
     {
         MODE_INFO* tmp = pbi->common.prev_mi;
         int row, col;
         pbi->common.prev_mi = pbi->common.mi;
         pbi->common.mi = tmp;
         /* Propagate the segment_ids to the next frame */
         for (row = 0; row < pbi->common.mb_rows; ++row)
         {
             for (col = 0; col < pbi->common.mb_cols; ++col)
             {
                 const int i = row*pbi->common.mode_info_stride + col;
                 pbi->common.mi[i].mbmi.segment_id =
                         pbi->common.prev_mi[i].mbmi.segment_id;
             }
         }
     }
 #endif
     pbi->ready_for_new_data = 0;
     pbi->last_time_stamp = time_stamp;
 decode_exit:
 #if HAVE_NEON
 #if CONFIG_RUNTIME_CPU_DETECT
     if (cm->cpu_caps & HAS_NEON)
 #endif
     {
         vp8_pop_neon(dx_store_reg);
     }
 #endif
     pbi->common.error.setjmp = 0;
     return retcode;
 }
 int vp8dx_get_raw_frame(VP8D_COMP *pbi, YV12_BUFFER_CONFIG *sd, int64_t *time_stamp, int64_t *time_end_stamp, vp8_ppflags_t *flags)
 {
     int ret = -1;
     if (pbi->ready_for_new_data == 1)
         return ret;
     /* ie no raw frame to show!!! */
     if (pbi->common.show_frame == 0)
         return ret;
     pbi->ready_for_new_data = 1;
     *time_stamp = pbi->last_time_stamp;
     *time_end_stamp = 0;
 #if CONFIG_POSTPROC
     ret = vp8_post_proc_frame(&pbi->common, sd, flags);
 #else
     if (pbi->common.frame_to_show)
     {
         *sd = *pbi->common.frame_to_show;
         sd->y_width = pbi->common.Width;
         sd->y_height = pbi->common.Height;
         sd->uv_height = pbi->common.Height / 2;
         ret = 0;
     }
     else
     {
         ret = -1;
     }
 #endif /*!CONFIG_POSTPROC*/
     vp8_clear_system_state();
     return ret;
 }
 /* This function as written isn't decoder specific, but the encoder has
  * much faster ways of computing this, so it's ok for it to live in a
  * decode specific file.
  */
 int vp8dx_references_buffer( VP8_COMMON *oci, int ref_frame )
 {
     const MODE_INFO *mi = oci->mi;
     int mb_row, mb_col;
     for (mb_row = 0; mb_row < oci->mb_rows; mb_row++)
     {
         for (mb_col = 0; mb_col < oci->mb_cols; mb_col++,mi++)
         {
             if( mi->mbmi.ref_frame == ref_frame)
               return 1;
         }
         mi++;
     }
     return 0;
 }
 int vp8_create_decoder_instances(struct frame_buffers *fb, VP8D_CONFIG *oxcf)
 {
     if(!fb->use_frame_threads)
     {
         /* decoder instance for single thread mode */
         fb->pbi[0] = create_decompressor(oxcf);
         if(!fb->pbi[0])
             return VPX_CODEC_ERROR;
 #if CONFIG_MULTITHREAD
         /* enable row-based threading only when use_frame_threads
          * is disabled */
         fb->pbi[0]->max_threads = oxcf->max_threads;
         vp8_decoder_create_threads(fb->pbi[0]);
 #endif
     }
     else
     {
         /* TODO : create frame threads and decoder instances for each
          * thread here */
     }
     return VPX_CODEC_OK;
 }
 int vp8_remove_decoder_instances(struct frame_buffers *fb)
 {
     if(!fb->use_frame_threads)
     {
         VP8D_COMP *pbi = fb->pbi[0];
         if (!pbi)
             return VPX_CODEC_ERROR;
 #if CONFIG_MULTITHREAD
         if (pbi->b_multithreaded_rd)
             vp8mt_de_alloc_temp_buffers(pbi, pbi->common.mb_rows);
         vp8_decoder_remove_threads(pbi);
 #endif
         /* decoder instance for single thread mode */
         remove_decompressor(pbi);
     }
     else
     {
         /* TODO : remove frame threads and decoder instances for each
          * thread here */
     }
     return VPX_CODEC_OK;
 }

The Tor Browser / annotate

media/libvpx/vp8/decoder/onyxd_if.c@b8a032363ba2 (annotated)

media/libvpx/vp8/decoder/onyxd_if.c