am7xxx-play: s/picture/frame/ to make the variable names match the data types

No functional changes, just a word substitution to match more closely
what the data types represent.

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index 9deffd2..4987c62 100644 (file)
--- a/examples/am7xxx-play.c
+++ b/examples/am7xxx-play.c
@@ -177,7 +177,7 @@ static int video_output_init(struct video_output_ctx *output_ctx,
                goto out;
        }
 
-       /* Calculate the new output dimension so the original picture is shown
+       /* Calculate the new output dimension so the original frame is shown
         * in its entirety */
        ret = am7xxx_calc_scaled_image_dimensions(dev,
                                                  upscale,
@@ -268,16 +268,16 @@ static int am7xxx_play(const char *input_format_string,
 {
        struct video_input_ctx input_ctx;
        struct video_output_ctx output_ctx;
-       AVFrame *picture_raw;
-       AVFrame *picture_scaled;
+       AVFrame *frame_raw;
+       AVFrame *frame_scaled;
        int out_buf_size;
        uint8_t *out_buf;
-       int out_picture_size;
-       uint8_t *out_picture;
+       int out_frame_size;
+       uint8_t *out_frame;
        struct SwsContext *sw_scale_ctx;
        AVPacket in_packet;
        AVPacket out_packet;
-       int got_picture;
+       int got_frame;
        int got_packet;
        int ret;
 
@@ -294,23 +294,23 @@ static int am7xxx_play(const char *input_format_string,
        }
 
        /* allocate an input frame */
-       picture_raw = av_frame_alloc();
-       if (picture_raw == NULL) {
-               fprintf(stderr, "cannot allocate the raw picture frame!\n");
+       frame_raw = av_frame_alloc();
+       if (frame_raw == NULL) {
+               fprintf(stderr, "cannot allocate the raw frame!\n");
                ret = -ENOMEM;
                goto cleanup_output;
        }
 
        /* allocate output frame */
-       picture_scaled = av_frame_alloc();
-       if (picture_scaled == NULL) {
-               fprintf(stderr, "cannot allocate the scaled picture!\n");
+       frame_scaled = av_frame_alloc();
+       if (frame_scaled == NULL) {
+               fprintf(stderr, "cannot allocate the scaled frame!\n");
                ret = -ENOMEM;
-               goto cleanup_picture_raw;
+               goto cleanup_frame_raw;
        }
-       picture_scaled->format = (output_ctx.codec_ctx)->pix_fmt;
-       picture_scaled->width = (output_ctx.codec_ctx)->width;
-       picture_scaled->height = (output_ctx.codec_ctx)->height;
+       frame_scaled->format = (output_ctx.codec_ctx)->pix_fmt;
+       frame_scaled->width = (output_ctx.codec_ctx)->width;
+       frame_scaled->height = (output_ctx.codec_ctx)->height;
 
        /* calculate the bytes needed for the output image and create buffer for the output image */
        out_buf_size = av_image_get_buffer_size((output_ctx.codec_ctx)->pix_fmt,
@@ -321,12 +321,12 @@ static int am7xxx_play(const char *input_format_string,
        if (out_buf == NULL) {
                fprintf(stderr, "cannot allocate output data buffer!\n");
                ret = -ENOMEM;
-               goto cleanup_picture_scaled;
+               goto cleanup_frame_scaled;
        }
 
-       /* assign appropriate parts of buffer to image planes in picture_scaled */
-       av_image_fill_arrays(picture_scaled->data,
-                            picture_scaled->linesize,
+       /* assign appropriate parts of buffer to image planes in frame_scaled */
+       av_image_fill_arrays(frame_scaled->data,
+                            frame_scaled->linesize,
                             out_buf,
                             (output_ctx.codec_ctx)->pix_fmt,
                             (output_ctx.codec_ctx)->width,
@@ -368,8 +368,8 @@ static int am7xxx_play(const char *input_format_string,
                }
 
                /* decode */
-               got_picture = 0;
-               ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &in_packet);
+               got_frame = 0;
+               ret = avcodec_decode_video2(input_ctx.codec_ctx, frame_raw, &got_frame, &in_packet);
                if (ret < 0) {
                        fprintf(stderr, "cannot decode video\n");
                        run = 0;
@@ -377,32 +377,32 @@ static int am7xxx_play(const char *input_format_string,
                }
 
                /* if we got the complete frame */
-               if (got_picture) {
+               if (got_frame) {
                        /* 
-                        * Rescaling the picture also changes its pixel format
+                        * Rescaling the frame also changes its pixel format
                         * to the raw format supported by the projector if
                         * this was set in video_output_init()
                         */
                        sws_scale(sw_scale_ctx,
-                                 (const uint8_t * const *)picture_raw->data,
-                                 picture_raw->linesize,
+                                 (const uint8_t * const *)frame_raw->data,
+                                 frame_raw->linesize,
                                  0,
                                  (input_ctx.codec_ctx)->height,
-                                 picture_scaled->data,
-                                 picture_scaled->linesize);
+                                 frame_scaled->data,
+                                 frame_scaled->linesize);
 
                        if (output_ctx.raw_output) {
-                               out_picture = out_buf;
-                               out_picture_size = out_buf_size;
+                               out_frame = out_buf;
+                               out_frame_size = out_buf_size;
                        } else {
-                               picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
+                               frame_scaled->quality = (output_ctx.codec_ctx)->global_quality;
                                av_init_packet(&out_packet);
                                out_packet.data = NULL;
                                out_packet.size = 0;
                                got_packet = 0;
                                ret = avcodec_encode_video2(output_ctx.codec_ctx,
                                                            &out_packet,
-                                                           picture_scaled,
+                                                           frame_scaled,
                                                            &got_packet);
                                if (ret < 0 || !got_packet) {
                                        fprintf(stderr, "cannot encode video\n");
@@ -410,8 +410,8 @@ static int am7xxx_play(const char *input_format_string,
                                        goto end_while;
                                }
 
-                               out_picture = out_packet.data;
-                               out_picture_size = out_packet.size;
+                               out_frame = out_packet.data;
+                               out_frame_size = out_packet.size;
                        }
 
 #ifdef DEBUG
@@ -423,7 +423,7 @@ static int am7xxx_play(const char *input_format_string,
                                else
                                        snprintf(filename, NAME_MAX, "out.raw");
                                file = fopen(filename, "wb");
-                               fwrite(out_picture, 1, out_picture_size, file);
+                               fwrite(out_frame, 1, out_frame_size, file);
                                fclose(file);
                        }
 #else
@@ -434,8 +434,8 @@ static int am7xxx_play(const char *input_format_string,
                                                      image_format,
                                                      (output_ctx.codec_ctx)->width,
                                                      (output_ctx.codec_ctx)->height,
-                                                     out_picture,
-                                                     out_picture_size);
+                                                     out_frame,
+                                                     out_frame_size);
                        if (ret < 0) {
                                perror("am7xxx_send_image_async");
                                run = 0;
@@ -451,10 +451,10 @@ end_while:
        sws_freeContext(sw_scale_ctx);
 cleanup_out_buf:
        av_free(out_buf);
-cleanup_picture_scaled:
-       av_frame_free(&picture_scaled);
-cleanup_picture_raw:
-       av_frame_free(&picture_raw);
+cleanup_frame_scaled:
+       av_frame_free(&frame_scaled);
+cleanup_frame_raw:
+       av_frame_free(&frame_raw);
 
 cleanup_output:
        /* Freeing the codec context is needed as well,