lavc: introduce a new decoding/encoding API with decoupled input/output

[ffmpeg] / libavcodec / flicvideo.c

diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c
index 08c3ef32a8865805e88f389267ce859a74ed789d..3a595435b00662f0db0f83fb8d299d50120ba09e 100644 (file)
--- a/libavcodec/flicvideo.c
+++ b/libavcodec/flicvideo.c
@@ -42,6 +42,7 @@
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
 #include "bytestream.h"
+#include "internal.h"
 #include "mathops.h"
 
 #define FLI_256_COLOR 4
@@ -70,7 +71,7 @@
 
 typedef struct FlicDecodeContext {
     AVCodecContext *avctx;
-    AVFrame frame;
+    AVFrame *frame;
 
     unsigned int palette[256];
     int new_palette;
@@ -122,7 +123,10 @@ static av_cold int flic_decode_init(AVCodecContext *avctx)
                   return AVERROR_INVALIDDATA;
     }
 
-    s->frame.data[0] = NULL;
+    s->frame = av_frame_alloc();
+    if (!s->frame)
+        return AVERROR(ENOMEM);
+
     s->new_palette = 0;
 
     return 0;
@@ -167,15 +171,13 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
 
     bytestream2_init(&g2, buf, buf_size);
 
-    s->frame.reference = 1;
-    s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if ((ret = avctx->reget_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
         return ret;
     }
 
-    pixels = s->frame.data[0];
-    pixel_limit = s->avctx->height * s->frame.linesize[0];
+    pixels = s->frame->data[0];
+    pixel_limit = s->avctx->height * s->frame->linesize[0];
     frame_size = bytestream2_get_le32(&g2);
     bytestream2_skip(&g2, 2); /* skip the magic number */
     num_chunks = bytestream2_get_le16(&g2);
@@ -249,12 +251,12 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                 if ((line_packets & 0xC000) == 0xC000) {
                     // line skip opcode
                     line_packets = -line_packets;
-                    y_ptr += line_packets * s->frame.linesize[0];
+                    y_ptr += line_packets * s->frame->linesize[0];
                 } else if ((line_packets & 0xC000) == 0x4000) {
                     av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
                 } else if ((line_packets & 0xC000) == 0x8000) {
                     // "last byte" opcode
-                    pixel_ptr= y_ptr + s->frame.linesize[0] - 1;
+                    pixel_ptr= y_ptr + s->frame->linesize[0] - 1;
                     CHECK_PIXEL_PTR(0);
                     pixels[pixel_ptr] = line_packets & 0xff;
                 } else {
@@ -285,7 +287,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                         }
                     }
 
-                    y_ptr += s->frame.linesize[0];
+                    y_ptr += s->frame->linesize[0];
                 }
             }
             break;
@@ -294,7 +296,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
             /* line compressed */
             starting_line = bytestream2_get_le16(&g2);
             y_ptr = 0;
-            y_ptr += starting_line * s->frame.linesize[0];
+            y_ptr += starting_line * s->frame->linesize[0];
 
             compressed_lines = bytestream2_get_le16(&g2);
             while (compressed_lines > 0) {
@@ -325,7 +327,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                     }
                 }
 
-                y_ptr += s->frame.linesize[0];
+                y_ptr += s->frame->linesize[0];
                 compressed_lines--;
             }
             break;
@@ -333,7 +335,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
         case FLI_BLACK:
             /* set the whole frame to color 0 (which is usually black) */
             memset(pixels, 0,
-                s->frame.linesize[0] * s->avctx->height);
+                s->frame->linesize[0] * s->avctx->height);
             break;
 
         case FLI_BRUN:
@@ -376,7 +378,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                     }
                 }
 
-                y_ptr += s->frame.linesize[0];
+                y_ptr += s->frame->linesize[0];
             }
             break;
 
@@ -387,8 +389,8 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                        "bigger than image, skipping chunk\n", chunk_size - 6);
                 bytestream2_skip(&g2, chunk_size - 6);
             } else {
-                for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
-                     y_ptr += s->frame.linesize[0]) {
+                for (y_ptr = 0; y_ptr < s->frame->linesize[0] * s->avctx->height;
+                     y_ptr += s->frame->linesize[0]) {
                     bytestream2_get_buffer(&g2, &pixels[y_ptr],
                                            s->avctx->width);
                 }
@@ -418,14 +420,16 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
                buf_size - bytestream2_get_bytes_left(&g2));
 
     /* make the palette available on the way out */
-    memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
+    memcpy(s->frame->data[1], s->palette, AVPALETTE_SIZE);
     if (s->new_palette) {
-        s->frame.palette_has_changed = 1;
+        s->frame->palette_has_changed = 1;
         s->new_palette = 0;
     }
 
+    if ((ret = av_frame_ref(data, s->frame)) < 0)
+        return ret;
+
     *got_frame = 1;
-    *(AVFrame*)data = s->frame;
 
     return buf_size;
 }
@@ -463,15 +467,13 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
 
     bytestream2_init(&g2, buf, buf_size);
 
-    s->frame.reference = 1;
-    s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if ((ret = avctx->reget_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
         return ret;
     }
 
-    pixels = s->frame.data[0];
-    pixel_limit = s->avctx->height * s->frame.linesize[0];
+    pixels = s->frame->data[0];
+    pixel_limit = s->avctx->height * s->frame->linesize[0];
 
     frame_size = bytestream2_get_le32(&g2);
     bytestream2_skip(&g2, 2);  /* skip the magic number */
@@ -491,7 +493,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
             /* For some reason, it seems that non-palettized flics do
              * include one of these chunks in their first frame.
              * Why I do not know, it seems rather extraneous. */
-            av_dlog(avctx,
+            ff_dlog(avctx,
                     "Unexpected Palette chunk %d in non-palettized FLC\n",
                     chunk_type);
             bytestream2_skip(&g2, chunk_size - 6);
@@ -505,7 +507,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                 line_packets = bytestream2_get_le16(&g2);
                 if (line_packets < 0) {
                     line_packets = -line_packets;
-                    y_ptr += line_packets * s->frame.linesize[0];
+                    y_ptr += line_packets * s->frame->linesize[0];
                 } else {
                     compressed_lines--;
                     pixel_ptr = y_ptr;
@@ -534,20 +536,20 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                         }
                     }
 
-                    y_ptr += s->frame.linesize[0];
+                    y_ptr += s->frame->linesize[0];
                 }
             }
             break;
 
         case FLI_LC:
-            av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-paletised FLC\n");
+            av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-palettized FLC\n");
             bytestream2_skip(&g2, chunk_size - 6);
             break;
 
         case FLI_BLACK:
             /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
             memset(pixels, 0x0000,
-                   s->frame.linesize[0] * s->avctx->height);
+                   s->frame->linesize[0] * s->avctx->height);
             break;
 
         case FLI_BRUN:
@@ -598,7 +600,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                     pixel_ptr += 2;
                 }
 #endif
-                y_ptr += s->frame.linesize[0];
+                y_ptr += s->frame->linesize[0];
             }
             break;
 
@@ -638,7 +640,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                     }
                 }
 
-                y_ptr += s->frame.linesize[0];
+                y_ptr += s->frame->linesize[0];
             }
             break;
 
@@ -651,8 +653,8 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
                 bytestream2_skip(&g2, chunk_size - 6);
             } else {
 
-                for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
-                     y_ptr += s->frame.linesize[0]) {
+                for (y_ptr = 0; y_ptr < s->frame->linesize[0] * s->avctx->height;
+                     y_ptr += s->frame->linesize[0]) {
 
                     pixel_countdown = s->avctx->width;
                     pixel_ptr = 0;
@@ -685,9 +687,10 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
         av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
                "and final chunk ptr = %d\n", buf_size, bytestream2_tell(&g2));
 
+    if ((ret = av_frame_ref(data, s->frame)) < 0)
+        return ret;
 
     *got_frame = 1;
-    *(AVFrame*)data = s->frame;
 
     return buf_size;
 }
@@ -733,20 +736,19 @@ static av_cold int flic_decode_end(AVCodecContext *avctx)
 {
     FlicDecodeContext *s = avctx->priv_data;
 
-    if (s->frame.data[0])
-        avctx->release_buffer(avctx, &s->frame);
+    av_frame_free(&s->frame);
 
     return 0;
 }
 
 AVCodec ff_flic_decoder = {
     .name           = "flic",
+    .long_name      = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_FLIC,
     .priv_data_size = sizeof(FlicDecodeContext),
     .init           = flic_decode_init,
     .close          = flic_decode_end,
     .decode         = flic_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"),
+    .capabilities   = AV_CODEC_CAP_DR1,
 };