On Mon, 19 Feb 2018 23:28:44 +0000
Mark Thompson <s...@jkqxz.net> wrote:
> Also adds some extra fields to the main context structure that may
> be needed by a hwaccel decoder.
> ---
> YUVJ hacks are removed, they will be handled in API-specific code.
>
>
> libavcodec/mjpegdec.c | 74
> ++++++++++++++++++++++++++++++++++++++++++++++++---
> libavcodec/mjpegdec.h | 13 +++++++++ 2 files changed, 83
> insertions(+), 4 deletions(-)
>
> diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
> index 29f99373cc..6141f06367 100644
> --- a/libavcodec/mjpegdec.c
> +++ b/libavcodec/mjpegdec.c
> @@ -36,6 +36,7 @@
> #include "avcodec.h"
> #include "blockdsp.h"
> #include "copy_block.h"
> +#include "hwaccel.h"
> #include "idctdsp.h"
> #include "internal.h"
> #include "jpegtables.h"
> @@ -147,6 +148,7 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext
> *avctx) s->org_height = avctx->coded_height;
> avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
> avctx->colorspace = AVCOL_SPC_BT470BG;
> + s->hwaccel_pix_fmt = s->hwaccel_sw_pix_fmt = AV_PIX_FMT_NONE;
>
> if ((ret = build_basic_mjpeg_vlc(s)) < 0)
> return ret;
> @@ -279,13 +281,18 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
> code_max + 1, 0, 0)) < 0)
> return ret;
> }
> +
> + for (i = 0; i < 16; i++)
> + s->raw_huffman_lengths[class][index][i] = bits_table[i +
> 1];
> + for (i = 0; i < 256; i++)
> + s->raw_huffman_values[class][index][i] = val_table[i];
> }
> return 0;
> }
>
> int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
> {
> - int len, nb_components, i, width, height, bits, ret;
> + int len, nb_components, i, width, height, bits, ret, size_change;
> unsigned pix_fmt_id;
> int h_count[MAX_COMPONENTS] = { 0 };
> int v_count[MAX_COMPONENTS] = { 0 };
> @@ -392,6 +399,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
> if (width != s->width || height != s->height || bits != s->bits
> || memcmp(s->h_count, h_count, sizeof(h_count)) ||
> memcmp(s->v_count, v_count, sizeof(v_count))) {
> + size_change = 1;
>
> s->width = width;
> s->height = height;
> @@ -418,6 +426,8 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
> return ret;
>
> s->first_picture = 0;
> + } else {
> + size_change = 0;
> }
>
> if (s->got_picture && s->interlaced && (s->bottom_field
> == !s->interlace_polarity)) { @@ -636,6 +646,21 @@ unk_pixfmt:
> return AVERROR_BUG;
> }
>
> + if (s->avctx->pix_fmt == s->hwaccel_sw_pix_fmt && !size_change) {
> + s->avctx->pix_fmt = s->hwaccel_pix_fmt;
> + } else {
> + enum AVPixelFormat pix_fmts[] = {
> + s->avctx->pix_fmt,
> + AV_PIX_FMT_NONE,
> + };
> + s->hwaccel_pix_fmt = ff_get_format(s->avctx, pix_fmts);
> + if (s->hwaccel_pix_fmt < 0)
> + return AVERROR(EINVAL);
> +
> + s->hwaccel_sw_pix_fmt = s->avctx->pix_fmt;
> + s->avctx->pix_fmt = s->hwaccel_pix_fmt;
> + }
> +
> if (s->avctx->skip_frame == AVDISCARD_ALL) {
> s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
> s->picture_ptr->key_frame = 1;
> @@ -683,6 +708,19 @@ unk_pixfmt:
> }
> memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
> }
> +
> + if (s->avctx->hwaccel) {
> + s->hwaccel_picture_private =
> + av_mallocz(s->avctx->hwaccel->frame_priv_data_size);
> + if (!s->hwaccel_picture_private)
> + return AVERROR(ENOMEM);
> +
> + ret = s->avctx->hwaccel->start_frame(s->avctx,
> s->raw_image_buffer,
> +
> s->raw_image_buffer_size);
> + if (ret < 0)
> + return ret;
> + }
> +
> return 0;
> }
>
> @@ -1510,7 +1548,6 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
> const uint8_t *mb_bitmask, }
> }
>
> - av_assert0(s->picture_ptr->data[0]);
> /* XXX: verify len field validity */
> len = get_bits(&s->gb, 16);
> nb_components = get_bits(&s->gb, 8);
> @@ -1600,7 +1637,18 @@ next_field:
> for (i = 0; i < nb_components; i++)
> s->last_dc[i] = (4 << s->bits);
>
> - if (s->lossless) {
> + if (s->avctx->hwaccel) {
> + int bytes_to_start = get_bits_count(&s->gb) / 8;
> + av_assert0(bytes_to_start >= 0 &&
> + s->raw_scan_buffer_size >= bytes_to_start);
> +
> + ret = s->avctx->hwaccel->decode_slice(s->avctx,
> +
> s->raw_scan_buffer + bytes_to_start,
> +
> s->raw_scan_buffer_size - bytes_to_start);
> + if (ret < 0)
> + return ret;
> +
> + } else if (s->lossless) {
> av_assert0(s->picture_ptr == s->picture);
> if (CONFIG_JPEGLS_DECODER && s->ls) {
> // for () {
> @@ -2278,6 +2326,8 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, case SOI:
> s->restart_interval = 0;
> s->restart_count = 0;
> + s->raw_image_buffer = buf_ptr;
> + s->raw_image_buffer_size = buf_end - buf_ptr;
> /* nothing to do on SOI */
> break;
> case DHT:
> @@ -2331,7 +2381,8 @@ int ff_mjpeg_decode_frame(AVCodecContext
> *avctx, void *data, int *got_frame, break;
> case EOI:
> eoi_parser:
> - if (avctx->skip_frame != AVDISCARD_ALL && s->progressive
> && s->cur_scan && s->got_picture)
> + if (!avctx->hwaccel && avctx->skip_frame !=
> AVDISCARD_ALL &&
> + s->progressive && s->cur_scan && s->got_picture)
> mjpeg_idct_scan_progressive_ac(s);
> s->cur_scan = 0;
> if (!s->got_picture) {
> @@ -2349,6 +2400,13 @@ eoi_parser:
> s->got_picture = 0;
> goto the_end_no_picture;
> }
> + if (s->avctx->hwaccel) {
> + ret = s->avctx->hwaccel->end_frame(s->avctx);
> + if (ret < 0)
> + return ret;
> +
> + av_freep(&s->hwaccel_picture_private);
> + }
> if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0)
> return ret;
> *got_frame = 1;
> @@ -2371,6 +2429,9 @@ eoi_parser:
>
> goto the_end;
> case SOS:
> + s->raw_scan_buffer = buf_ptr;
> + s->raw_scan_buffer_size = buf_end - buf_ptr;
> +
> s->cur_scan++;
> if (avctx->skip_frame == AVDISCARD_ALL) {
> skip_bits(&s->gb, get_bits_left(&s->gb));
> @@ -2673,6 +2734,8 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext
> *avctx)
> reset_icc_profile(s);
>
> + av_freep(&s->hwaccel_picture_private);
> +
> return 0;
> }
>
> @@ -2713,6 +2776,9 @@ AVCodec ff_mjpeg_decoder = {
> .priv_class = &mjpegdec_class,
> .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
> FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
> + .hw_configs = (const AVCodecHWConfigInternal*[]) {
> + NULL
> + },
> };
> #endif
> #if CONFIG_THP_DECODER
> diff --git a/libavcodec/mjpegdec.h b/libavcodec/mjpegdec.h
> index c36fba5f22..ff301bcb93 100644
> --- a/libavcodec/mjpegdec.h
> +++ b/libavcodec/mjpegdec.h
> @@ -137,6 +137,19 @@ typedef struct MJpegDecodeContext {
> int *iccdatalens;
> int iccnum;
> int iccread;
> +
> + // Raw stream data for hwaccel use.
> + const uint8_t *raw_image_buffer;
> + size_t raw_image_buffer_size;
> + const uint8_t *raw_scan_buffer;
> + size_t raw_scan_buffer_size;
> +
> + uint8_t raw_huffman_lengths[2][4][16];
> + uint8_t raw_huffman_values[2][4][256];
> +
> + enum AVPixelFormat hwaccel_sw_pix_fmt;
> + enum AVPixelFormat hwaccel_pix_fmt;
> + void *hwaccel_picture_private;
> } MJpegDecodeContext;
>
> int ff_mjpeg_decode_init(AVCodecContext *avctx);
LGTM
--phil
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