#include <libavdevice/avdevice.h>
#include <libavformat/avformat.h>
+#include <libavutil/imgutils.h>
#include <libswscale/swscale.h>
#include <am7xxx.h>
-/* On some systems ENOTSUP is not defined, fallback to its value on
- * linux which is equal to EOPNOTSUPP which is 95
- */
-#ifndef ENOTSUP
-#define ENOTSUP 95
-#endif
-
static unsigned int run = 1;
struct video_input_ctx {
{
AVInputFormat *input_format = NULL;
AVFormatContext *input_format_ctx;
+ AVCodecParameters *input_codec_params;
AVCodecContext *input_codec_ctx;
AVCodec *input_codec;
int video_index;
- unsigned int i;
int ret;
avdevice_register_all();
av_dump_format(input_format_ctx, 0, input_path, 0);
/* look for the first video_stream */
- video_index = -1;
- for (i = 0; i < input_format_ctx->nb_streams; i++)
- if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
- video_index = i;
- break;
- }
- if (video_index == -1) {
+ video_index = av_find_best_stream(input_format_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &input_codec, 0);
+ if (video_index < 0) {
fprintf(stderr, "cannot find any video streams\n");
- ret = -ENOTSUP;
+ ret = -EINVAL;
goto cleanup;
}
- /* get a pointer to the codec context for the video stream */
- input_codec_ctx = input_format_ctx->streams[video_index]->codec;
+ input_codec_ctx = avcodec_alloc_context3(input_codec);
if (input_codec_ctx == NULL) {
- fprintf(stderr, "input codec context is not valid\n");
- ret = -ENOTSUP;
+ fprintf(stderr, "failed to allocate the input codec context\n");
+ ret = -ENOMEM;
goto cleanup;
}
- /* find the decoder for the video stream */
- input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
- if (input_codec == NULL) {
- fprintf(stderr, "input_codec is NULL!\n");
- ret = -ENOTSUP;
- goto cleanup;
+ input_codec_params = input_format_ctx->streams[video_index]->codecpar;
+ ret = avcodec_parameters_to_context(input_codec_ctx, input_codec_params);
+ if (ret < 0) {
+ fprintf(stderr, "cannot copy parameters to input codec context\n");
+ goto cleanup_ctx;
}
/* open the decoder */
ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
if (ret < 0) {
fprintf(stderr, "cannot open input codec\n");
- ret = -ENOTSUP;
- goto cleanup;
+ goto cleanup_ctx;
}
input_ctx->format_ctx = input_format_ctx;
ret = 0;
goto out;
+cleanup_ctx:
+ avcodec_free_context(&input_codec_ctx);
cleanup:
avformat_close_input(&input_format_ctx);
out:
*/
if (image_format == AM7XXX_IMAGE_FORMAT_NV12) {
fprintf(stdout, "using raw output format\n");
- output_codec_ctx->pix_fmt = PIX_FMT_NV12;
+ output_codec_ctx->pix_fmt = AV_PIX_FMT_NV12;
output_ctx->codec_ctx = output_codec_ctx;
output_ctx->raw_output = 1;
ret = 0;
* in particular they won't be 0, this is needed because they are used
* as divisor somewhere in the encoding process */
output_codec_ctx->qmin = output_codec_ctx->qmax = ((100 - (quality - 1)) * FF_QUALITY_SCALE) / 100;
- output_codec_ctx->mb_lmin = output_codec_ctx->lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
- output_codec_ctx->mb_lmax = output_codec_ctx->lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;
- output_codec_ctx->flags |= CODEC_FLAG_QSCALE;
+ output_codec_ctx->mb_lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
+ output_codec_ctx->mb_lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;
+ output_codec_ctx->flags |= AV_CODEC_FLAG_QSCALE;
output_codec_ctx->global_quality = output_codec_ctx->qmin * FF_QP2LAMBDA;
/* find the encoder */
output_codec = avcodec_find_encoder(output_codec_ctx->codec_id);
if (output_codec == NULL) {
fprintf(stderr, "cannot find output codec!\n");
- ret = -ENOTSUP;
+ ret = -EINVAL;
goto cleanup;
}
goto out;
cleanup:
- avcodec_close(output_codec_ctx);
- av_free(output_codec_ctx);
+ avcodec_free_context(&output_codec_ctx);
out:
return ret;
}
unsigned int upscale,
unsigned int quality,
am7xxx_image_format image_format,
- am7xxx_device *dev)
+ am7xxx_device *dev,
+ int dump_frame)
{
struct video_input_ctx input_ctx;
struct video_output_ctx output_ctx;
ret = -ENOMEM;
goto cleanup_picture_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;
/* calculate the bytes needed for the output image and create buffer for the output image */
- out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
- (output_ctx.codec_ctx)->width,
- (output_ctx.codec_ctx)->height);
+ out_buf_size = av_image_get_buffer_size((output_ctx.codec_ctx)->pix_fmt,
+ (output_ctx.codec_ctx)->width,
+ (output_ctx.codec_ctx)->height,
+ 1);
out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
if (out_buf == NULL) {
fprintf(stderr, "cannot allocate output data buffer!\n");
}
/* assign appropriate parts of buffer to image planes in picture_scaled */
- avpicture_fill((AVPicture *)picture_scaled,
- out_buf,
- (output_ctx.codec_ctx)->pix_fmt,
- (output_ctx.codec_ctx)->width,
- (output_ctx.codec_ctx)->height);
+ av_image_fill_arrays(picture_scaled->data,
+ picture_scaled->linesize,
+ out_buf,
+ (output_ctx.codec_ctx)->pix_fmt,
+ (output_ctx.codec_ctx)->width,
+ (output_ctx.codec_ctx)->height,
+ 1);
sw_scale_ctx = sws_getCachedContext(NULL,
(input_ctx.codec_ctx)->width,
goto end_while;
}
- /* if we get the complete frame */
+ /* if we got the complete frame */
if (got_picture) {
- /* convert it to YUV */
+ /*
+ * Rescaling the picture 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,
+ (const uint8_t * const *)picture_raw->data,
picture_raw->linesize,
0,
(input_ctx.codec_ctx)->height,
}
#ifdef DEBUG
- char filename[NAME_MAX];
- FILE *file;
- if (!output_ctx.raw_output)
- snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
- else
- snprintf(filename, NAME_MAX, "out.raw");
- file = fopen(filename, "wb");
- fwrite(out_picture, 1, out_picture_size, file);
- fclose(file);
+ if (dump_frame) {
+ char filename[NAME_MAX];
+ FILE *file;
+ if (!output_ctx.raw_output)
+ snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
+ else
+ snprintf(filename, NAME_MAX, "out.raw");
+ file = fopen(filename, "wb");
+ fwrite(out_picture, 1, out_picture_size, file);
+ fclose(file);
+ }
+#else
+ (void) dump_frame;
#endif
ret = am7xxx_send_image_async(dev,
out_picture,
out_picture_size);
if (ret < 0) {
- perror("am7xxx_send_image");
+ perror("am7xxx_send_image_async");
run = 0;
goto end_while;
}
}
end_while:
if (!output_ctx.raw_output && got_packet)
- av_free_packet(&out_packet);
- av_free_packet(&in_packet);
+ av_packet_unref(&out_packet);
+ av_packet_unref(&in_packet);
}
sws_freeContext(sw_scale_ctx);
av_frame_free(&picture_raw);
cleanup_output:
- /* av_free is needed as well,
- * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
+ /* Freeing the codec context is needed as well,
+ * see https://libav.org/documentation/doxygen/master/group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f
*/
avcodec_close(output_ctx.codec_ctx);
- av_free(output_ctx.codec_ctx);
+ avcodec_free_context(&(output_ctx.codec_ctx));
cleanup_input:
avcodec_close(input_ctx.codec_ctx);
+ avcodec_free_context(&(input_ctx.codec_ctx));
avformat_close_input(&(input_ctx.format_ctx));
out:
static char *get_x_screen_size(const char *input_path)
{
(void) input_path;
- fprintf(stderr, "%s: fallback implementation\n", __func__);
+ fprintf(stderr, "%s: fallback implementation, assuming a vga screen\n", __func__);
return strdup("vga");
}
#endif
printf("usage: %s [OPTIONS]\n\n", name);
printf("OPTIONS:\n");
printf("\t-d <index>\t\tthe device index (default is 0)\n");
+#ifdef DEBUG
+ printf("\t-D \t\t\tdump the last frame to a file (only active in DEBUG mode)\n");
+#endif
printf("\t-f <input format>\tthe input device format\n");
printf("\t-i <input path>\t\tthe input path\n");
printf("\t-o <options>\t\ta comma separated list of input format options\n");
int format = AM7XXX_IMAGE_FORMAT_JPEG;
am7xxx_context *ctx;
am7xxx_device *dev;
+ int dump_frame = 0;
- while ((opt = getopt(argc, argv, "d:f:i:o:s:uF:q:l:p:z:h")) != -1) {
+ while ((opt = getopt(argc, argv, "d:Df:i:o:s:uF:q:l:p:z:h")) != -1) {
switch (opt) {
case 'd':
device_index = atoi(optarg);
goto out;
}
break;
+ case 'D':
+ dump_frame = 1;
+#ifndef DEBUG
+ fprintf(stderr, "Warning: the -D option is only active in DEBUG mode.\n");
+#endif
+ break;
case 'f':
input_format_string = strdup(optarg);
break;
upscale,
quality,
format,
- dev);
+ dev,
+ dump_frame);
if (ret < 0) {
fprintf(stderr, "am7xxx_play failed\n");
goto cleanup;
projects / libam7xxx.git / blobdiff