X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/c71788d6309eafd1d0bdc503ebb75055c43c0416..8aa04859fc68aeab28d08a1c7d97ef5a0f7ce050:/examples/am7xxx-play.c diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c index f63fbfd..b523ca6 100644 --- a/examples/am7xxx-play.c +++ b/examples/am7xxx-play.c @@ -31,17 +31,11 @@ #include #include +#include #include #include -/* 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 { @@ -57,6 +51,7 @@ static int video_input_init(struct video_input_ctx *input_ctx, { AVInputFormat *input_format = NULL; AVFormatContext *input_format_ctx; + AVCodecParameters *input_codec_params; AVCodecContext *input_codec_ctx; AVCodec *input_codec; int video_index; @@ -107,38 +102,45 @@ static int video_input_init(struct video_input_ctx *input_ctx, /* 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) { + if (input_format_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { video_index = i; break; } if (video_index == -1) { 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; - if (input_codec_ctx == NULL) { - fprintf(stderr, "input codec context is not valid\n"); - ret = -ENOTSUP; - goto cleanup; - } + /* get a pointer to the codec parameters for the video stream */ + input_codec_params = input_format_ctx->streams[video_index]->codecpar; /* find the decoder for the video stream */ - input_codec = avcodec_find_decoder(input_codec_ctx->codec_id); + input_codec = avcodec_find_decoder(input_codec_params->codec_id); if (input_codec == NULL) { fprintf(stderr, "input_codec is NULL!\n"); - ret = -ENOTSUP; + ret = -EINVAL; + goto cleanup; + } + + input_codec_ctx = avcodec_alloc_context3(input_codec); + if (input_codec_ctx == NULL) { + fprintf(stderr, "failed to allocate the input codec context\n"); + ret = -ENOMEM; goto cleanup; } + 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; @@ -148,6 +150,8 @@ static int video_input_init(struct video_input_ctx *input_ctx, ret = 0; goto out; +cleanup_ctx: + avcodec_free_context(&input_codec_ctx); cleanup: avformat_close_input(&input_format_ctx); out: @@ -216,7 +220,7 @@ static int video_output_init(struct video_output_ctx *output_ctx, */ 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; @@ -235,16 +239,16 @@ static int video_output_init(struct video_output_ctx *output_ctx, * 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; } @@ -276,7 +280,8 @@ static int am7xxx_play(const char *input_format_string, 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; @@ -320,11 +325,15 @@ static int am7xxx_play(const char *input_format_string, 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"); @@ -333,11 +342,13 @@ static int am7xxx_play(const char *input_format_string, } /* 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, @@ -384,7 +395,11 @@ static int am7xxx_play(const char *input_format_string, /* 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, picture_raw->linesize, @@ -417,15 +432,19 @@ static int am7xxx_play(const char *input_format_string, } #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, @@ -435,15 +454,15 @@ static int am7xxx_play(const char *input_format_string, 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); @@ -463,6 +482,7 @@ cleanup_output: cleanup_input: avcodec_close(input_ctx.codec_ctx); + avcodec_free_context(&(input_ctx.codec_ctx)); avformat_close_input(&(input_ctx.format_ctx)); out: @@ -540,7 +560,7 @@ static char *get_x_screen_size(const char *input_path) 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 @@ -594,6 +614,9 @@ static void usage(char *name) printf("usage: %s [OPTIONS]\n\n", name); printf("OPTIONS:\n"); printf("\t-d \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 \tthe input device format\n"); printf("\t-i \t\tthe input path\n"); printf("\t-o \t\ta comma separated list of input format options\n"); @@ -641,8 +664,9 @@ int main(int argc, char *argv[]) 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); @@ -652,6 +676,12 @@ int main(int argc, char *argv[]) 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; @@ -850,7 +880,8 @@ int main(int argc, char *argv[]) upscale, quality, format, - dev); + dev, + dump_frame); if (ret < 0) { fprintf(stderr, "am7xxx_play failed\n"); goto cleanup;