[libav-devel] [PATCH 58/76] svq1enc: use the AVFrame API properly.

Anton Khirnov anton at khirnov.net
Sat Nov 9 20:14:12 CET 2013


---
 libavcodec/svq1enc.c |  111 ++++++++++++++++++++++++++------------------------
 1 file changed, 58 insertions(+), 53 deletions(-)

diff --git a/libavcodec/svq1enc.c b/libavcodec/svq1enc.c
index fa94f52..3cd3a4a 100644
--- a/libavcodec/svq1enc.c
+++ b/libavcodec/svq1enc.c
@@ -46,9 +46,8 @@ typedef struct SVQ1Context {
     AVCodecContext *avctx;
     DSPContext dsp;
     HpelDSPContext hdsp;
-    AVFrame picture;
-    AVFrame current_picture;
-    AVFrame last_picture;
+    AVFrame *current_picture;
+    AVFrame *last_picture;
     PutBitContext pb;
     GetBitContext gb;
 
@@ -265,13 +264,14 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
                              unsigned char *decoded_plane,
                              int width, int height, int src_stride, int stride)
 {
+    const AVFrame *f = s->avctx->coded_frame;
     int x, y;
     int i;
     int block_width, block_height;
     int level;
     int threshold[6];
     uint8_t *src     = s->scratchbuf + stride * 16;
-    const int lambda = (s->picture.quality * s->picture.quality) >>
+    const int lambda = (f->quality * f->quality) >>
                        (2 * FF_LAMBDA_SHIFT);
 
     /* figure out the acceptable level thresholds in advance */
@@ -282,7 +282,7 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
     block_width  = (width  + 15) / 16;
     block_height = (height + 15) / 16;
 
-    if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
+    if (f->pict_type == AV_PICTURE_TYPE_P) {
         s->m.avctx                         = s->avctx;
         s->m.current_picture_ptr           = &s->m.current_picture;
         s->m.last_picture_ptr              = &s->m.last_picture;
@@ -298,13 +298,13 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
         s->m.mb_stride                     = s->m.mb_width + 1;
         s->m.b8_stride                     = 2 * s->m.mb_width + 1;
         s->m.f_code                        = 1;
-        s->m.pict_type                     = s->picture.pict_type;
+        s->m.pict_type                     = f->pict_type;
         s->m.me_method                     = s->avctx->me_method;
         s->m.me.scene_change_score         = 0;
         s->m.flags                         = s->avctx->flags;
         // s->m.out_format                    = FMT_H263;
         // s->m.unrestricted_mv               = 1;
-        s->m.lambda                        = s->picture.quality;
+        s->m.lambda                        = f->quality;
         s->m.qscale                        = s->m.lambda * 139 +
                                              FF_LAMBDA_SCALE * 64 >>
                                              FF_LAMBDA_SHIFT + 7;
@@ -397,13 +397,13 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
             ff_init_block_index(&s->m);
             ff_update_block_index(&s->m);
 
-            if (s->picture.pict_type == AV_PICTURE_TYPE_I ||
+            if (f->pict_type == AV_PICTURE_TYPE_I ||
                 (s->m.mb_type[x + y * s->m.mb_stride] &
                  CANDIDATE_MB_TYPE_INTRA)) {
                 for (i = 0; i < 6; i++)
                     init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
                                   7 * 32);
-                if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
+                if (f->pict_type == AV_PICTURE_TYPE_P) {
                     const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
                     score[0] = vlc[1] * lambda;
@@ -419,7 +419,7 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
 
             best = 0;
 
-            if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
+            if (f->pict_type == AV_PICTURE_TYPE_P) {
                 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
                 int mx, my, pred_x, pred_y, dxy;
                 int16_t *motion_ptr;
@@ -499,13 +499,48 @@ static int svq1_encode_plane(SVQ1Context *s, int plane,
     return 0;
 }
 
+static av_cold int svq1_encode_end(AVCodecContext *avctx)
+{
+    SVQ1Context *const s = avctx->priv_data;
+    int i;
+
+    av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
+           s->rd_total / (double)(avctx->width * avctx->height *
+                                  avctx->frame_number));
+
+    av_freep(&s->m.me.scratchpad);
+    av_freep(&s->m.me.map);
+    av_freep(&s->m.me.score_map);
+    av_freep(&s->mb_type);
+    av_freep(&s->dummy);
+    av_freep(&s->scratchbuf);
+
+    for (i = 0; i < 3; i++) {
+        av_freep(&s->motion_val8[i]);
+        av_freep(&s->motion_val16[i]);
+    }
+
+    av_frame_free(&s->current_picture);
+    av_frame_free(&s->last_picture);
+    av_frame_free(&avctx->coded_frame);
+
+    return 0;
+}
+
 static av_cold int svq1_encode_init(AVCodecContext *avctx)
 {
     SVQ1Context *const s = avctx->priv_data;
 
     ff_dsputil_init(&s->dsp, avctx);
     ff_hpeldsp_init(&s->hdsp, avctx->flags);
-    avctx->coded_frame = &s->picture;
+
+    avctx->coded_frame = av_frame_alloc();
+    s->current_picture = av_frame_alloc();
+    s->last_picture    = av_frame_alloc();
+    if (!avctx->coded_frame || !s->current_picture || !s->last_picture) {
+        svq1_encode_end(avctx);
+        return AVERROR(ENOMEM);
+    }
 
     s->frame_width  = avctx->width;
     s->frame_height = avctx->height;
@@ -537,8 +572,7 @@ static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                              const AVFrame *pict, int *got_packet)
 {
     SVQ1Context *const s = avctx->priv_data;
-    AVFrame *const p     = &s->picture;
-    AVFrame temp;
+    AVFrame *const p     = avctx->coded_frame;
     int i, ret;
 
     if (!pkt->data &&
@@ -553,33 +587,31 @@ static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         return -1;
     }
 
-    if (!s->current_picture.data[0]) {
-        ff_get_buffer(avctx, &s->current_picture, 0);
-        ff_get_buffer(avctx, &s->last_picture, 0);
-        s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16 * 2);
+    if (!s->current_picture->data[0]) {
+        ff_get_buffer(avctx, s->current_picture, 0);
+        ff_get_buffer(avctx, s->last_picture, 0);
+        s->scratchbuf = av_malloc(s->current_picture->linesize[0] * 16 * 2);
     }
 
-    temp               = s->current_picture;
-    s->current_picture = s->last_picture;
-    s->last_picture    = temp;
+    FFSWAP(AVFrame*, s->current_picture, s->last_picture);
 
     init_put_bits(&s->pb, pkt->data, pkt->size);
 
-    *p           = *pict;
     p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?
                    AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
     p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
+    p->quality   = pict->quality;
 
     svq1_write_header(s, p->pict_type);
     for (i = 0; i < 3; i++)
         if (svq1_encode_plane(s, i,
-                              s->picture.data[i],
-                              s->last_picture.data[i],
-                              s->current_picture.data[i],
+                              pict->data[i],
+                              s->last_picture->data[i],
+                              s->current_picture->data[i],
                               s->frame_width  / (i ? 4 : 1),
                               s->frame_height / (i ? 4 : 1),
-                              s->picture.linesize[i],
-                              s->current_picture.linesize[i]) < 0)
+                              pict->linesize[i],
+                              s->current_picture->linesize[i]) < 0)
             return -1;
 
     // avpriv_align_put_bits(&s->pb);
@@ -596,33 +628,6 @@ static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     return 0;
 }
 
-static av_cold int svq1_encode_end(AVCodecContext *avctx)
-{
-    SVQ1Context *const s = avctx->priv_data;
-    int i;
-
-    av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
-           s->rd_total / (double)(avctx->width * avctx->height *
-                                  avctx->frame_number));
-
-    av_freep(&s->m.me.scratchpad);
-    av_freep(&s->m.me.map);
-    av_freep(&s->m.me.score_map);
-    av_freep(&s->mb_type);
-    av_freep(&s->dummy);
-    av_freep(&s->scratchbuf);
-
-    for (i = 0; i < 3; i++) {
-        av_freep(&s->motion_val8[i]);
-        av_freep(&s->motion_val16[i]);
-    }
-
-    av_frame_unref(&s->current_picture);
-    av_frame_unref(&s->last_picture);
-
-    return 0;
-}
-
 AVCodec ff_svq1_encoder = {
     .name           = "svq1",
     .long_name      = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
-- 
1.7.10.4



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